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    <title>GPS Jottings</title>
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    <id>tag:www.mapability.com,2007-10-15:/blogs/gps//2</id>
    <updated>2008-07-11T05:09:25Z</updated>
    <subtitle>An occasional series of notes as I navigate through the world of GPS, and GPS Maps.</subtitle>
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<entry>
    <title>GPX Route Map Technical Details</title>
    <link rel="alternate" type="text/html" href="http://www.mapability.com/blogs/gps/2008/07/gpx-route-map-technical-detail.html" />
    <id>tag:www.mapability.com,2008:/blogs/gps//2.119</id>

    <published>2008-07-08T05:30:14Z</published>
    <updated>2008-07-11T05:09:25Z</updated>

    <summary>This page describes the procedures used to record and process a series of Garmin GPX files for display online as a Google Map, or as a detailed report that displays a GPX file in the form of graphs and useful...</summary>
    <author>
        <name>Tim Makins</name>
        
    </author>
    
    
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        <![CDATA[<p>This page describes the procedures used to record and process a series of Garmin GPX files for display online as a Google Map, or as a detailed report that displays a GPX file in the form of graphs and useful statistics.</p>

<p>In March 2008, I joined a Dragoman truck to embark on an Overland journey from the UK to St Petersburg, via Central Asia, China, Mongolia, and Kazakhstan. (See the full route <a href="http://www.mapability.com/blogs/map.html" target="_blank">here</a>.) Starting in Istanbul, and continuing every driving day since then, I have been recording the route that the Dragoman truck has taken, using my Garmin GPSmap60Cx GPS receiver. This model of GPS receiver has a removable microSD card  that can be used to store tracks. The GPS receiver comes with a 64MB card, but I exchanged this for a 1GB card, in order to have plenty of room to store the daily files. Is that big enough? Yes - the files take up very little space on the card - typically 120 bytes per trackpoint. That's approximately 8.3 million trackpoints on a 1GB card. In other words, if you are recording at the rate of 1 per second, 24 hours a day, it would take 96 days to fill up! So far, after 3 months on this Overland journey, I have generated 11.5MB of data.</p>

<p>To get the GPSmap 60cx receiver to store a daily file of constantly updated positions, find the 'Tracks' page, and notice that there is a dot next to 'Off'. Use the Rocker Key to highlight the word 'On', then press 'Enter' to move the dot to there. You are now recording all your moves, and will continue to do so until you change the setting back to 'Off'. As well as storing positions in a file called the 'Active Tracklog', which we will ignore for the moment, the GPS also stores positions in a daily file, which will be named something like '20080327.gpx' i.e. YYYYMMDD. This is created and named automatically, and can be downloaded to your computer for processing. Whilst you can remove the microSD card from the GPS and put it in a card-reader to see the files, it is a lot easier just to access the data via a USB link. Plug your GPS receiver into your computer's USB port, turn the GPS on, and click Main Menu > Setup > Interface. Select the bottom button marked 'USB Mass Storage'. The computer will then alert you that a new Drive has been detected - use 'My Computer' or 'Windows Explorer' to locate the drive, which will contain the .gpx files that you have generated so far. Copy these to a new folder on your computer's hard drive, then eject the GPS using the 'Safely Remove Hardware' button in the System Tray, and turn off the GPS.</p>

<p>There are a number of ways to produce an online map of your stored GPX files. The following Web sites allow you to plot your GPX data on a Web map:</p>

<div style="margin-left:2em;">
<p><a href="http://www.chrislacy.net/map" >GPS - GPX Interactive Map</a> (View GPX files on Google Maps)</p>
<p><a href="http://www.obviously.com/gis/gpx_loader.html" >GPX Loader for Google Maps</a> (View GPX files on Google Maps)</p>
<p><a href="http://www.gpsplanner.net/" >GPS Planner</a> (for routes)</p>
<p><a href="http://www.gpsvisualizer.com/" >GPS Visualizer</a> (Convert GPX to SVG maps and elevation profiles)</p>
<p><a href="http://www.elsewhere.org/GMapToGPX/" >GMapToGPX</a> (View GPX files on Google Maps)</p>
<p><a href="http://maps.innersource.com/" >Innersource</a> (View GPX files on Google Maps)</p>
<p><a href="http://www.marengo-ltd.com/map/" >Marengo GPS Route Planner</a> (View GPX files on Google Maps)</p>
<p><a href="http://maps.kylemulka.com/gpxviewer.php" >Online GPX Viewer</a> (View GPX files on Google Maps)</p>
<p><a href="http://www.gpswandern.de/gpxviewer/gpxviewer.shtml" >Track Viewer</a> (View GPX files on Google Maps)</p>
</div>

<p>However, if you want to display a map on your own website, already formatted with all the details of your track, you will need some software that can create it. First of all, you must sign up for a <a href="http://code.google.com/apis/maps/signup.html" target="_blank">Google Map API</a>. This authorises you to embed Google Maps in your own web pages with JavaScript, and provides a unique API password that you will need for each map. Note that the API applies to just ONE FOLDER on your website. You have to specify the address of the folder when you sign up for the API - for instance: http://www.mysite.com/webmaps/ All the maps that you authorise with the API code MUST be in that folder.</p>

<p>Next, the software. There are various programs that can be used to create the map code. I use <a href="http://www.robogeo.com/home/" target="_blank">RoboGEO</a>, a program primarily designed to geo-reference photographs (more about doing that <a href="http://www.mapability.com/blogs/gps/2007/09/how-to-geotag-photos.html" target="_blank">here</a>). One of its other many abilities is to produce a Google map page showing the location of each photo. You can also add a track on the map, which is what we are interested in here. I simply omit to upload any photos, but make sure the Tracklog is displayed when creating the webpage. To do this, follow these steps:</p>

<ol>
<li>Start the 'RoboGeo' program</li>
<li>Click File > Get Locations >  Tracklog > Import Tracklog file</li>
<li>Select the required file - when it is imported, the total number of points will be displayed</li>
<li>Click File > Export > Google Maps</li>
<li>Paste your API code to the 'Google Key' box</li>
<li>Set the Webpage Title to '20081231' or similar</li>
<li>Set the View to 'Map'</li>
<li>Check the box 'Include the GPS Tracklog on the Map'</li>
<li>Set the 'Approx max number of polylines to create' to a value greater than the total points in your file</li>
<li>Click 'Create Google Map', and save it in a folder with the same name as the Title</li>
<li>Upload the map.htm and map.xml files to your server, and view the map online in a web-browser</li>
</ol>

<p>To view the maps I've already generated, click on the links below. The map will initially load as a standard roadmap, but you can also select a Satellite view, or a hybrid view of the two, using the buttons in the top right of the screen. The amount of detail that the Satellite view will provide depends on Google's current satellite photos for that area. In the countryside this might just show a general view that identifies built-up and rural areas, whilst in bigger cities you can often zoom in to see individual buildings, and decide which exit we took from a carpark, or even where we parked in that carpark! The detail can be astonishing. You can click-and-drag to move the map around, and zoom in and out using the +/- slider on the left of the screen. Note that Google provides no maps for Georgia or Azerbiajan (why not?), and the western parts of China are similarly blank, so you will have to use the satellite photos instead.</p>

<p>To create the detailed Route-Reports, I use the online uTrack report generator at <a href="http://utrack.crempa.net/" target="_blank">http://utrack.crempa.net</a> This page will upload a GPX file from your computer and produce a detailed Route-Report that shows a number of graphs and statistics, such as:</p>

<ul>
<li>Elevation profile graph - elevation plotted against distance.</li>
<li>Elevation profile graph - elevation plotted against time.</li>
<li>Elevation statistics: Minimum elevation, Maximum elevation, Average elevation, Maximum difference, Total climbing, Total descent, Start elevation, End elevation, and Final balance.</li>
<li>Speed profile graph - speed plotted against distance.</li>
<li>Speed profile graph - speed plotted against time.</li>
<li>Speed statistics: Minimum speed, Maximum speed, Average climbing speed, Average descent speed, Average flat speed, and Average speed.</li>
<li>Time statistics: Date of track, Start time, End time, Total track time, Climbing time, Descent time, and Flat time.</li>
<li>Distance profile graph - distance plotted against time.</li>
<li>Distance statistics: Total flat distance, Total real distance, Climbing distance, Descent distance, and Flat distance.</li>
</ul>

<p>Once the report has been generated, an option is presented to save it as a PDF file, which can later be uploaded to your server. To view the Reports I have generated so far, click on the links below. You will need a PDF reader installed on your computer to read PDF files - suitable software is available free from <a href="http://www.adobe.com/products/acrobat/readstep2.html" target="_blank">Adobe</a>. Some errors still exist - for instance, when the satellite signal is lost when we drive through a tunnel, the altitude can have unexpected results. When I have more time, I will try and edit these files to remove such glitches, but for now, whilst I am 'on the road', these reports will at least give you an idea of what we have been doing.</p>

<p>The table below contains links and details of all the maps and reports generated so far:</p>

<table cellspacing="8" cellpadding="8" border="0" width="100%">
<tr><th>Date</th><th>Country</th><th>Route Notes</th><th>Route Map</th><th>Route Report</th></tr>

<tr><td>March 27th 2008</td><td>Turkey</td><td>Istanbul - Ankara</td><td><a href="http://www.mapability.com/asia2008/20080327.html" target="_blank">Map</a></td>
<td><a href="http://www.mapability.com/asia2008/pdf/20080327.pdf" target="_blank">Report</a></td></tr>

<tr><td>March 28th 2008</td><td>Turkey</td><td>Ankara - Nevsehir</td><td><a href="http://www.mapability.com/asia2008/20080328.html" target="_blank">Map</a></td>
<td><a href="http://www.mapability.com/asia2008/pdf/20080328.pdf" target="_blank">Report</a></td></tr>

<tr><td>March 30th 2008</td><td>Turkey</td><td>Nevsehir - Refahiye</td><td><a href="http://www.mapability.com/asia2008/20080330.html" target="_blank">Map</a></td>
<td><a href="http://www.mapability.com/asia2008/pdf/20080330.pdf" target="_blank">Report</a></td></tr>

<tr><td>March 31st 2008</td><td>Turkey</td><td>Refahiye - Sumela Monastery</td><td><a href="http://www.mapability.com/asia2008/20080331.html" target="_blank">Map</a></td>
<td><a href="http://www.mapability.com/asia2008/pdf/20080331.pdf" target="_blank">Report</a></td></tr>

<tr><td>April 02nd 2008</td><td>Turkey/Georgia</td><td>Sumela Monastery - Batumi</td><td><a href="http://www.mapability.com/asia2008/20080402.html" target="_blank">Map</a></td>
<td><a href="http://www.mapability.com/asia2008/pdf/20080402.pdf" target="_blank">Report</a></td></tr>

<tr><td>April 03rd 2008</td><td>Georgia</td><td>Batumi - Kutaisi</td><td><a href="http://www.mapability.com/asia2008/20080403.html" target="_blank">Map</a></td>
<td><a href="http://www.mapability.com/asia2008/pdf/20080403.pdf" target="_blank">Report</a></td></tr>

<tr><td>April 04th 2008</td><td>Georgia</td><td>Kutaisi - Kazbegi</td><td><a href="http://www.mapability.com/asia2008/20080404.html" target="_blank">Map</a></td>
<td><a href="http://www.mapability.com/asia2008/pdf/20080404.pdf" target="_blank">Report</a></td></tr>

<tr><td>April 05th 2008</td><td>Georgia</td><td>Trekking at Kazbegi</td><td><a href="http://www.mapability.com/asia2008/20080405.html" target="_blank">Map</a></td>
<td><a href="http://www.mapability.com/asia2008/pdf/20080405.pdf" target="_blank">Report</a></td></tr>

<tr><td>April 06th 2008</td><td>Georgia</td><td>M27 - Tbilisi</td><td><a href="http://www.mapability.com/asia2008/20080406.html" target="_blank">Map</a></td>
<td><a href="http://www.mapability.com/asia2008/pdf/20080406.pdf" target="_blank">Report</a></td></tr>

<tr><td>April 09th 2008</td><td>Georgia</td><td>Tbilisi - Telavi</td><td><a href="http://www.mapability.com/asia2008/20080409.html" target="_blank">Map</a></td>
<td><a href="http://www.mapability.com/asia2008/pdf/20080409.pdf" target="_blank">Report</a></td></tr>

<tr><th>Date</th><th>Country</th><th>Route Notes</th><th>Route Map</th><th>Route Report</th></tr>

<tr><td>April 10th 2008</td><td>Georgia</td><td>Telavi - N41.50 E046.03</td><td><a href="http://www.mapability.com/asia2008/20080410.html" target="_blank">Map</a></td>
<td><a href="http://www.mapability.com/asia2008/pdf/20080410.pdf" target="_blank">Report</a></td></tr>

<tr><td>April 11th 2008</td><td>Georgia</td><td>N41.50 E046.03 - N41.06 E047.17</td><td><a href="http://www.mapability.com/asia2008/20080411.html" target="_blank">Map</a></td>
<td><a href="http://www.mapability.com/asia2008/pdf/20080411.pdf" target="_blank">Report</a></td></tr>

<tr><td>April 12th 2008</td><td>Georgia</td><td>N41.06 E047.17 - Laihic</td><td><a href="http://www.mapability.com/asia2008/20080412.html" target="_blank">Map</a></td>
<td><a href="http://www.mapability.com/asia2008/pdf/20080412.pdf" target="_blank">Report</a></td></tr>

<tr><td>April 13th 2008</td><td>Georgia</td><td>Laihic - Baku</td><td><a href="http://www.mapability.com/asia2008/20080413.html" target="_blank">Map</a></td>
<td><a href="http://www.mapability.com/asia2008/pdf/20080413.pdf" target="_blank">Report</a></td></tr>

<tr><td>April 16th 2008</td><td>Turkmenistan</td><td>Around Turkmenbashi</td><td><a href="http://www.mapability.com/asia2008/20080416.html" target="_blank">Map</a></td>
<td><a href="http://www.mapability.com/asia2008/pdf/20080416.pdf" target="_blank">Report</a></td></tr>

<tr><td>April 17th 2008</td><td>Turkmenistan</td><td>Turkmenbashi - Yaradzhy</td><td><a href="http://www.mapability.com/asia2008/20080417.html" target="_blank">Map</a></td>
<td><a href="http://www.mapability.com/asia2008/pdf/20080417.pdf" target="_blank">Report</a></td></tr>

<tr><td>April 18th 2008</td><td>Turkmenistan</td><td>Yaradzhy - Ashgabat</td><td><a href="http://www.mapability.com/asia2008/20080418.html" target="_blank">Map</a></td>
<td><a href="http://www.mapability.com/asia2008/pdf/20080418.pdf" target="_blank">Report</a></td></tr>

<tr><td>April 20th 2008</td><td>Turkmenistan</td><td>Ashgabat - Darvaza</td><td><a href="http://www.mapability.com/asia2008/20080420.html" target="_blank">Map</a></td>
<td><a href="http://www.mapability.com/asia2008/pdf/20080420.pdf" target="_blank">Report</a></td></tr>

<tr><td>April 21st 2008</td><td>Turkmenistan</td><td>Darvaza - N41.46 E059.35</td><td><a href="http://www.mapability.com/asia2008/20080421.html" target="_blank">Map</a></td>
<td><a href="http://www.mapability.com/asia2008/pdf/20080421.pdf" target="_blank">Report</a></td></tr>

<tr><td>April 22nd 2008</td><td>Turkmen/Uzbek</td><td>N41.46 E059.35 - Khiva</td><td><a href="http://www.mapability.com/asia2008/20080422.html" target="_blank">Map</a></td>
<td><a href="http://www.mapability.com/asia2008/pdf/20080422.pdf" target="_blank">Report</a></td></tr>

<tr><th>Date</th><th>Country</th><th>Route Notes</th><th>Route Map</th><th>Route Report</th></tr>

<tr><td>April 24th 2008</td><td>Uzbekistan</td><td>Khiva - Bukhara</td><td><a href="http://www.mapability.com/asia2008/20080424.html" target="_blank">Map</a></td>
<td><a href="http://www.mapability.com/asia2008/pdf/20080424.pdf" target="_blank">Report</a></td></tr>

<tr><td>April 27th 2008</td><td>Uzbekistan</td><td>Bukhara - N40.57 E065.35</td><td><a href="http://www.mapability.com/asia2008/20080427.html" target="_blank">Map</a></td>
<td><a href="http://www.mapability.com/asia2008/pdf/20080427.pdf" target="_blank">Report</a></td></tr>

<tr><td>April 28th 2008</td><td>Uzbekistan</td><td>N40.57 E065.35 - N40.01 E066.35</td><td><a href="http://www.mapability.com/asia2008/20080428.html" target="_blank">Map</a></td>
<td><a href="http://www.mapability.com/asia2008/pdf/20080428.pdf" target="_blank">Report</a></td></tr>

<tr><td>April 29th 2008</td><td>Uzbekistan</td><td>N40.01 E066.35 - Samarkand</td><td><a href="http://www.mapability.com/asia2008/20080429.html" target="_blank">Map</a></td>
<td><a href="http://www.mapability.com/asia2008/pdf/20080429.pdf" target="_blank">Report</a></td></tr>

<tr><td>May 01st 2008</td><td>Uzbekistan</td><td>Samarkand - Tashkent</td><td><a href="http://www.mapability.com/asia2008/20080501.html" target="_blank">Map</a></td>
<td><a href="http://www.mapability.com/asia2008/pdf/20080501.pdf" target="_blank">Report</a></td></tr>

<tr><td>May 04th 2008</td><td>Uzbekistan</td><td>Tashkent - Fergana</td><td><a href="http://www.mapability.com/asia2008/20080504.html" target="_blank">Map</a></td>
<td><a href="http://www.mapability.com/asia2008/pdf/20080504.pdf" target="_blank">Report</a></td></tr>

<tr><td>May 05th 2008</td><td>Uzbek/Kyrgyz</td><td>Fergana - Uzgen</td><td><a href="http://www.mapability.com/asia2008/20080505.html" target="_blank">Map</a></td>
<td><a href="http://www.mapability.com/asia2008/pdf/20080505.pdf" target="_blank">Report</a></td></tr>

<tr><td>May 06th 2008</td><td>Kyrgyzstan</td><td>Uzgen - Toktogul Lake</td><td><a href="http://www.mapability.com/asia2008/20080506.html" target="_blank">Map</a></td>
<td><a href="http://www.mapability.com/asia2008/pdf/20080506.pdf" target="_blank">Report</a></td></tr>

<tr><td>May 07th 2008</td><td>Kyrgyzstan</td><td>Toktogul Lake - N42.05 E074.08</td><td><a href="http://www.mapability.com/asia2008/20080507.html" target="_blank">Map</a></td>
<td><a href="http://www.mapability.com/asia2008/pdf/20080507.pdf" target="_blank">Report</a></td></tr>

<tr><td>May 08th 2008</td><td>Kyrgyzstan</td><td>N42.05 E074.08 - N41.49 E074.31</td><td><a href="http://www.mapability.com/asia2008/20080508.html" target="_blank">Map</a></td>
<td><a href="http://www.mapability.com/asia2008/pdf/20080508.pdf" target="_blank">Report</a></td></tr>

<tr><th>Date</th><th>Country</th><th>Route Notes</th><th>Route Map</th><th>Route Report</th></tr>
<tr><td>May 09th 2008</td><td>Kyrgyzstan</td><td>N41.49 E074.31 - Kochkorka</td><td><a href="http://www.mapability.com/asia2008/20080509.html" target="_blank">Map</a></td>
<td><a href="http://www.mapability.com/asia2008/pdf/20080509.pdf" target="_blank">Report</a></td></tr>

<tr><td>May 10th 2008</td><td>Kyrgyzstan</td><td>Kochkorka - Issyk-Kul Lake</td><td><a href="http://www.mapability.com/asia2008/20080510.html" target="_blank">Map</a></td>
<td><a href="http://www.mapability.com/asia2008/pdf/20080510.pdf" target="_blank">Report</a></td></tr>

<tr><td>May 11th 2008</td><td>Kyrgyzstan</td><td>Issyk-Kul Lake - Karakol</td><td><a href="http://www.mapability.com/asia2008/20080511.html" target="_blank">Map</a></td>
<td><a href="http://www.mapability.com/asia2008/pdf/20080511.pdf" target="_blank">Report</a></td></tr>

<tr><td>May 12th 2008</td><td>Kyrgyzstan</td><td>Karakol - Sarycat Ertas</td><td><a href="http://www.mapability.com/asia2008/20080512.html" target="_blank">Map</a></td>
<td><a href="http://www.mapability.com/asia2008/pdf/20080512.pdf" target="_blank">Report</a></td></tr>

<tr><td>May 13th 2008</td><td>Kyrgyzstan</td><td>Trekking at Sarycat Ertas</td><td><a href="http://www.mapability.com/asia2008/20080513.html" target="_blank">Map</a></td>
<td><a href="http://www.mapability.com/asia2008/pdf/20080513.pdf" target="_blank">Report</a></td></tr>

<tr><td>May 14th 2008</td><td>Kyrgyzstan</td><td>Sarycat Ertas - Cholpon Ata</td><td><a href="http://www.mapability.com/asia2008/20080514.html" target="_blank">Map</a></td>
<td><a href="http://www.mapability.com/asia2008/pdf/20080514.pdf" target="_blank">Report</a></td></tr>

<tr><td>May 15th 2008</td><td>Kyrgyzstan</td><td>Cholpon Ata - Ala Archa Canyon</td><td><a href="http://www.mapability.com/asia2008/20080515.html" target="_blank">Map</a></td>
<td><a href="http://www.mapability.com/asia2008/pdf/20080515.pdf" target="_blank">Report</a></td></tr>

<tr><td>May 16th 2008</td><td>Kyrgyzstan</td><td>Trekking in Ala Archa Canyon</td><td><a href="http://www.mapability.com/asia2008/20080516.html" target="_blank">Map</a></td>
<td><a href="http://www.mapability.com/asia2008/pdf/20080516.pdf" target="_blank">Report</a></td></tr>

<tr><td>May 17th 2008</td><td>Kyrgyzstan</td><td>Ala Archa Canyon - Bishkek</td><td><a href="http://www.mapability.com/asia2008/20080517.html" target="_blank">Map</a></td>
<td><a href="http://www.mapability.com/asia2008/pdf/20080517.pdf" target="_blank">Report</a></td></tr>

<tr><td>May 19th 2008</td><td>Kyrgyzstan</td><td>Bishkek - Naryn</td><td><a href="http://www.mapability.com/asia2008/20080519.html" target="_blank">Map</a></td>
<td><a href="http://www.mapability.com/asia2008/pdf/20080519.pdf" target="_blank">Report</a></td></tr>

<tr><th>Date</th><th>Country</th><th>Route Notes</th><th>Route Map</th><th>Route Report</th></tr>

<tr><td>May 20th 2008</td><td>Kyrgyzstan</td><td>Naryn - N40.43 E075.05</td><td><a href="http://www.mapability.com/asia2008/20080520.html" target="_blank">Map</a></td>
<td><a href="http://www.mapability.com/asia2008/pdf/20080520.pdf" target="_blank">Report</a></td></tr>

<tr><td>May 21st 2008</td><td>Kyrgyz/China</td><td>N40.43 E075.05 - Kashgar</td><td><a href="http://www.mapability.com/asia2008/20080521.html" target="_blank">Map</a></td>
<td><a href="http://www.mapability.com/asia2008/pdf/20080521.pdf" target="_blank">Report</a></td></tr>

<tr><td>May 22nd 2008</td><td>China</td><td>Kashgar - Tashkurgan</td><td><a href="http://www.mapability.com/asia2008/20080522.html" target="_blank">Map</a></td>
<td><a href="http://www.mapability.com/asia2008/pdf/20080522.pdf" target="_blank">Report</a></td></tr>

<tr><td>May 23rd 2008</td><td>China</td><td>Tashkurgan - Kashgar</td><td><a href="http://www.mapability.com/asia2008/20080523.html" target="_blank">Map</a></td>
<td><a href="http://www.mapability.com/asia2008/pdf/20080523.pdf" target="_blank">Report</a></td></tr>

<tr><td>May 27th 2008</td><td>China</td><td>Kashgar - N37.14 E079.01</td><td><a href="http://www.mapability.com/asia2008/20080527.html" target="_blank">Map</a></td>
<td><a href="http://www.mapability.com/asia2008/pdf/20080527.pdf" target="_blank">Report</a></td></tr>

<tr><td>May 28th 2008</td><td>China</td><td>N37.14 E079.01 - Minfeng</td><td><a href="http://www.mapability.com/asia2008/20080528.html" target="_blank">Map</a></td>
<td><a href="http://www.mapability.com/asia2008/pdf/20080528.pdf" target="_blank">Report</a></td></tr>

<tr><td>May 29th 2008</td><td>China</td><td>Minfeng - N41.44 E085.03</td><td><a href="http://www.mapability.com/asia2008/20080529.html" target="_blank">Map</a></td>
<td><a href="http://www.mapability.com/asia2008/pdf/20080529.pdf" target="_blank">Report</a></td></tr>

<tr><td>May 30th 2008</td><td>China</td><td>N41.44 E085.03 - Turpan</td><td><a href="http://www.mapability.com/asia2008/20080530.html" target="_blank">Map</a></td>
<td><a href="http://www.mapability.com/asia2008/pdf/20080530.pdf" target="_blank">Report</a></td></tr>

<tr><td>May 31st 2008</td><td>China</td><td>Sightseeing around Turpan</td><td><a href="http://www.mapability.com/asia2008/20080531.html" target="_blank">Map</a></td>
<td><a href="http://www.mapability.com/asia2008/pdf/20080531.pdf" target="_blank">Report</a></td></tr>

<tr><td>June 01st 2008</td><td>China</td><td>Sightseeing around Turpan</td><td><a href="http://www.mapability.com/asia2008/20080601.html" target="_blank">Map</a></td>
<td><a href="http://www.mapability.com/asia2008/pdf/20080601.pdf" target="_blank">Report</a></td></tr>

<tr><th>Date</th><th>Country</th><th>Route Notes</th><th>Route Map</th><th>Route Report</th></tr>

<tr><td>June 02nd 2008</td><td>China</td><td>Turpan - Liaodun</td><td><a href="http://www.mapability.com/asia2008/20080602.html" target="_blank">Map</a></td>
<td><a href="http://www.mapability.com/asia2008/pdf/20080602.pdf" target="_blank">Report</a></td></tr>

<tr><td>June 03rd 2008</td><td>China</td><td>Liaodun - Mogao Caves</td><td><a href="http://www.mapability.com/asia2008/20080603.html" target="_blank">Map</a></td>
<td><a href="http://www.mapability.com/asia2008/pdf/20080603.pdf" target="_blank">Report</a></td></tr>

<tr><td>June 04th 2008</td><td>China</td><td>Mogao Caves - Dunhuang</td><td><a href="http://www.mapability.com/asia2008/20080604.html" target="_blank">Map</a></td>
<td><a href="http://www.mapability.com/asia2008/pdf/20080604.pdf" target="_blank">Report</a></td></tr>

<tr><td>June 05th 2008</td><td>China</td><td>Dunhuang - Jiayuguan</td><td><a href="http://www.mapability.com/asia2008/20080605.html" target="_blank">Map</a></td>
<td><a href="http://www.mapability.com/asia2008/pdf/20080605.pdf" target="_blank">Report</a></td></tr>

<tr><td>June 06th 2008</td><td>China</td><td>Sightseeing around Jiayuguan</td><td><a href="http://www.mapability.com/asia2008/20080606.html" target="_blank">Map</a></td>
<td><a href="http://www.mapability.com/asia2008/pdf/20080606.pdf" target="_blank">Report</a></td></tr>

<tr><td>June 07th 2008</td><td>China</td><td>Jiayuguan - Shandan</td><td><a href="http://www.mapability.com/asia2008/20080607.html" target="_blank">Map</a></td>
<td><a href="http://www.mapability.com/asia2008/pdf/20080607.pdf" target="_blank">Report</a></td></tr>

<tr><td>June 08th 2008</td><td>China</td><td>Shandan - N36.59 E103.08</td><td><a href="http://www.mapability.com/asia2008/20080608.html" target="_blank">Map</a></td>
<td><a href="http://www.mapability.com/asia2008/pdf/20080608.pdf" target="_blank">Report</a></td></tr>

<tr><td>June 09th 2008</td><td>China</td><td>N36.59 E103.08 - Liujiaxia</td><td><a href="http://www.mapability.com/asia2008/20080609.html" target="_blank">Map</a></td>
<td><a href="http://www.mapability.com/asia2008/pdf/20080609.pdf" target="_blank">Report</a></td></tr>

<tr><td>June 10th 2008</td><td>China</td><td>Liujiaxia and the Bingling Caves</td><td><a href="http://www.mapability.com/asia2008/20080610.html" target="_blank">Map</a></td>
<td><a href="http://www.mapability.com/asia2008/pdf/20080610.pdf" target="_blank">Report</a></td></tr>

<tr><td>June 11th 2008</td><td>China</td><td>Liujiaxia - Lanzhou</td><td><a href="http://www.mapability.com/asia2008/20080611.html" target="_blank">Map</a></td>
<td><a href="http://www.mapability.com/asia2008/pdf/20080611.pdf" target="_blank">Report</a></td></tr>

<tr><th>Date</th><th>Country</th><th>Route Notes</th><th>Route Map</th><th>Route Report</th></tr>

<tr><td>June 12th 2008</td><td>China</td><td>Lanzhou - Pinliang</td><td><a href="http://www.mapability.com/asia2008/20080612.html" target="_blank">Map</a></td>
<td><a href="http://www.mapability.com/asia2008/pdf/20080612.pdf" target="_blank">Report</a></td></tr>

<tr><td>June 13th 2008</td><td>China</td><td>Pinliang - Kongtong Shan</td><td><a href="http://www.mapability.com/asia2008/20080613.html" target="_blank">Map</a></td>
<td><a href="http://www.mapability.com/asia2008/pdf/20080613.pdf" target="_blank">Report</a></td></tr>

<tr><td>June 14th 2008</td><td>China</td><td>Pinliang - Xian</td><td><a href="http://www.mapability.com/asia2008/20080614.html" target="_blank">Map</a></td>
<td><a href="http://www.mapability.com/asia2008/pdf/20080614.pdf" target="_blank">Report</a></td></tr>

<tr><td>June 16th 2008</td><td>China</td><td>Xian - Terracotta Warriors</td><td><a href="http://www.mapability.com/asia2008/20080616.html" target="_blank">Map</a></td>
<td><a href="http://www.mapability.com/asia2008/pdf/20080616.pdf" target="_blank">Report</a></td></tr>

<tr><td>June 17th 2008</td><td>China</td><td>Walking on Xian city walls</td><td><a href="http://www.mapability.com/asia2008/20080617.html" target="_blank">Map</a></td>
<td><a href="http://www.mapability.com/asia2008/pdf/20080617.pdf" target="_blank">Report</a></td></tr>

<tr><td>June 18th 2008</td><td>China</td><td>Xian - Pingliang</td><td><a href="http://www.mapability.com/asia2008/20080618.html" target="_blank">Map</a></td>
<td><a href="http://www.mapability.com/asia2008/pdf/20080618.pdf" target="_blank">Report</a></td></tr>

<tr><td>June 20th 2008</td><td>China</td><td>Pingliang - Zhongwei</td><td><a href="http://www.mapability.com/asia2008/20080620.html" target="_blank">Map</a></td>
<td><a href="http://www.mapability.com/asia2008/pdf/20080620.pdf" target="_blank">Report</a></td></tr>

<tr><td>June 21st 2008</td><td>China</td><td>Zhongwei - Yinchuan</td><td><a href="http://www.mapability.com/asia2008/20080621.html" target="_blank">Map</a></td>
<td><a href="http://www.mapability.com/asia2008/pdf/20080621.pdf" target="_blank">Report</a></td></tr>

<tr><td>June 22nd 2008</td><td>China</td><td>Yinchuan - Salaqi</td><td><a href="http://www.mapability.com/asia2008/20080622.html" target="_blank">Map</a></td>
<td><a href="http://www.mapability.com/asia2008/pdf/20080622.pdf" target="_blank">Report</a></td></tr>

<tr><td>June 23rd 2008</td><td>China</td><td>Salaqi - Datong</td><td><a href="http://www.mapability.com/asia2008/20080623.html" target="_blank">Map</a></td>
<td><a href="http://www.mapability.com/asia2008/pdf/20080623.pdf" target="_blank">Report</a></td></tr>

<tr><th>Date</th><th>Country</th><th>Route Notes</th><th>Route Map</th><th>Route Report</th></tr>

<tr><td>June 24th 2008</td><td>China</td><td>Sightseeing around Datong</td><td><a href="http://www.mapability.com/asia2008/20080624.html" target="_blank">Map</a></td>
<td><a href="http://www.mapability.com/asia2008/pdf/20080624.pdf" target="_blank">Report</a></td></tr>

<tr><td>June 25th 2008</td><td>China</td><td>Datong - Chengde</td><td><a href="http://www.mapability.com/asia2008/20080625.html" target="_blank">Map</a></td>
<td><a href="http://www.mapability.com/asia2008/pdf/20080625.pdf" target="_blank">Report</a></td></tr>

<tr><td>June 27th 2008</td><td>China</td><td>Great Wall at Jinshanling</td><td><a href="http://www.mapability.com/asia2008/20080627.html" target="_blank">Map</a></td>
<td><a href="http://www.mapability.com/asia2008/pdf/20080627.pdf" target="_blank">Report</a></td></tr>

<tr><td>June 28th 2008</td><td>China</td><td>Chengde - Zunhua tombs</td><td><a href="http://www.mapability.com/asia2008/20080628.html" target="_blank">Map</a></td>
<td><a href="http://www.mapability.com/asia2008/pdf/20080628.pdf" target="_blank">Report</a></td></tr>

<tr><td>June 29th 2008</td><td>China</td><td>Exploring the Zunhua tombs</td><td><a href="http://www.mapability.com/asia2008/20080629.html" target="_blank">Map</a></td>
<td><a href="http://www.mapability.com/asia2008/pdf/20080629.pdf" target="_blank">Report</a></td></tr>

<tr><td>June 30th 2008</td><td>China</td><td>Zunhua tombs - Beijing</td><td><a href="http://www.mapability.com/asia2008/20080630.html" target="_blank">Map</a></td>
<td><a href="http://www.mapability.com/asia2008/pdf/20080630.pdf" target="_blank">Report</a></td></tr>

</table>

<p>Note: All route and stored position data are copyright 2008 Tim Makins and MapAbility.Com</p>
]]>
        
    </content>
</entry>

<entry>
    <title>How to save Tracklogs from a GPSmap 60cx</title>
    <link rel="alternate" type="text/html" href="http://www.mapability.com/blogs/gps/2008/02/how-to-save-tracklogs-from-a-g.html" />
    <id>tag:www.mapability.com,2008:/blogs/gps//2.80</id>

    <published>2008-02-16T13:14:12Z</published>
    <updated>2008-07-08T03:35:14Z</updated>

    <summary>This article hopes to clear up some misunderstandings about the Garmin GPSmap 60cx receiver (no doubt others in the same range, too) and help you to understand just how the memory and memory card are used. The object of the...</summary>
    <author>
        <name>Tim Makins</name>
        
    </author>
    
    
    <content type="html" xml:lang="en" xml:base="http://www.mapability.com/blogs/gps/">
        <![CDATA[<p>This article hopes to clear up some misunderstandings about the Garmin GPSmap 60cx receiver (no doubt others in the same range, too) and help you to understand just how the memory and memory card are used. The object of the exercise is to save a file(s) of points automatically stored whilst you are moving about. This file can then be used to geocode photographs. A key requirement is that all saved points MUST have their time as well as position. </p>

<p>How do you tell the GPSmap 60cx receiver to store a file of constantly updated positions whilst you are moving about? Find the 'Tracks' page, and notice that there is a dot next to 'Off'. Use the Rocker Key to highlight the word 'On', then press 'Enter' to move the dot to there. You are now recording all your moves, and will continue to do so until you change the setting back to 'Off'. These positions will be stored in a file called the 'Active Tracklog'. The 'Active Tracklog' records time, date, position, altitude, leg speed, leg distance, leg time, and leg course. To control just how it does this, and set such things as 'Wrap When Full', go back to the 'Tracks' page and select 'Setup'.</p>

<p>OK. We've now finished our walk, and turned the track storage to 'Off'. The obvious thing to do is to go back to the 'Tracks' page and click on the 'Save' button to save the track you've just made. WRONG! If you do that, the saved tracklog will lose its timestamps. Simple lesson: don't save your tracklog on the GPS, counter-intuitive though this is!</p>

<p>If you just want to store your track the track you have just made, you need to access the 'Active Tracklog' with some suitable software. I would suggest the free and excellent program 'DNRgarmin' which you can find out about, and download, by clicking <a href="http://www.dnr.state.mn.us/mis/gis/tools/arcview/extensions/DNRGarmin/DNRGarmin.html" target="_blank">here</a>. Install and start the program, then click 'GPS >> Open Port'.  The program will tell you what kind of GPS it is seeing. Then click 'Track >> Download' to grab the entire Active Tracklog. You can then save this by clicking 'File >> Save to >> File', and choosing 'Save as Type' as Text File. All your track will be saved, and no data will be lost. You can open it up in 'Notepad' to see for yourself.</p>

<p>The above notes are all very well as long as the tracks you want to store are in the Active Tracklog. But what happens if you are going on an extended walking tour, and want to save the tracks for your entire trip? The Active Tracklog can only save 10,000 points. After that, the recording will stop, or will be over-written, depending on how you have configured the Tracks Setup page. The answer is to set your Garmin GPSmap 60cx receiver to save tracks on to the removable Micro SD card, which lives in the rear compartment, just under the batteries. It will automatically save a separate file for each day, and will continue to do this as long as there is space on your Micro SD card.  These .gpx files saved to the Micro SD card do NOT lose any data. The number of files on the card are only limited by the size of your card. In practise they take up very little space on the card - typically 120 bytes per trackpoint. That's approximately 8.3 million trackpoints on a 1GB card. In other words, if you are recording at the rate of 1 per second, 24 hours a day, it would take 96 days to fill up!</p>

<p>You can delete your Active Tracklog, which is saved in the main memory, at any time, but the GPX files will remain on the Micro SD card and do not affect the number of trackpoints in the main memory. Note that tracks stored on the card cannot, however, be displayed on the screen. You can only display the contents of the Active Tracklog on the screen, which effectively means you can only display (at most) the last 10,000 recorded track-points.</p>

<p>To access the files in the Micro SD card, you need a PC with Windows XP or above. Connect your Garmin GPSmap 60cx receiver to the PC using the USB lead supplied. Put the GPS in Mass storage mode: Main Menu >> Setup >> Interface, and click the 'USB MASS STORAGE BUTTON'. Back on your PC, start 'My Computer' and look for 'Removable Disc' - this is the SD datacard in your GPS, and will contain .gpx files for each automatically saved track. They will be named with the date: 'YYYYMMDD.gpx', and can be copied and pasted to another folder on your PC for later use. To end the USB mass storage mode, simply eject by clicking on the 'Safely Remove Hardware' button in the System Tray. The GPS will then reset to its normal mode. </p>

<p>To do useful things with these .gpx files, start the DNRgarmin program, choose File >> Load from >> File, and navigate to one of the .gpx files. Define the file as Point, Track, or Route when asked, and DNRgarmin will import and display the track. To export, choose File >> Save to >> File, then chose the format from the drop-down 'Save as type' box. You can also geotag photos with the excellent 'RoboGeo' program - see my last Blog entry: '<a href="http://www.mapability.com/blogs/gps/2007/09/how-to-geotag-photos.html" target="_blank">How to Geo-Tag Photos</a>' for details.</p>

<p><br />
Finally, I'd like to mention that during my research, noting all the details down as I discovered or amended them, this article almost wrote itself. If everyone noted down things during their researches, then published the notes on a Blog, we'd all save a lot of time!</p>]]>
        
    </content>
</entry>

<entry>
    <title>East Sussex Walks Online</title>
    <link rel="alternate" type="text/html" href="http://www.mapability.com/blogs/gps/2007/09/east-sussex-walks-online.html" />
    <id>tag:www.mapability.com,2007:/blogs/gps//2.70</id>

    <published>2007-09-11T20:00:00Z</published>
    <updated>2008-07-07T00:00:25Z</updated>

    <summary>Having recently purchased an Ordnance Survey &apos;Explorer&apos; map of the area (No 124) I have discovered all kinds of paths and bridleways around the Pestalozzi International Village that previously I didn&apos;t know existed. England is very fortunate in having its...</summary>
    <author>
        <name>Tim Makins</name>
        
    </author>
    
    
    <content type="html" xml:lang="en" xml:base="http://www.mapability.com/blogs/gps/">
        <![CDATA[<p>Having recently purchased an Ordnance Survey <a href="http://leisure.ordnancesurvey.co.uk/leisure/ItemDetails.jsp?item=os_explorer" target="_blank">'Explorer'</a> map of the area <a href="http://leisure.ordnancesurvey.co.uk/leisure/ItemDetails.jsp?item=os_active_124" target="_blank">(No 124)</a> I have discovered all kinds of paths and bridleways around the Pestalozzi International Village that previously I didn't know existed. England is very fortunate in having its many footpaths and other rights of way well documented, well maintained, and well signposted by the <a href="http://www.eastsussex.gov.uk/leisureandtourism/countryside/rightsofway/default.htm" target="_blank">local authorities</a>, though many of the signposts are quite discrete, so its is only with the help of a large scale map of the area that you can discover where they all are. Also, some local residents or land-owners are not that keen on having a footpath on or next to their property, so can hide or remove the signs that indicate a right of way, or just allow the undergrowth to naturally envelop them! With the right map, though, its easy to see where all these footpaths are.</p>

<p><a href="https://buy.garmin.com/shop/shop.do?cID=145&pID=309" target="_blank"><img src="http://www.mapability.com/blogs/gps/images/2007-09-10/gpsmap60cx.jpg" width="200px" height="300px" border="0" align="left" /></a>I am not a great fan of sport, but find that walking in the countryside is not only an excellent form of exercise to help combat the effects of the excellent food here at Pestalozzi, but also a very enjoyable way to pass a sunny weekend, looking at the beautiful scenery of the area, and spotting the fauna and flora of the area. With the aid of my new map, I have been on a number of very interesting walks - both locally, around the estate here, and further afield.</p>

<p>To share my walks with friends and family I thought of taking some photos and placing them on-line. However, following some research I realised that there was another, even more exciting possibility: showing the position of each photograph on a background map. This can be achieved by 'geo-tagging' the photos. The way this is done is explained in detail later on in this page, but basically the method used is to match the time that each photo is taken with a log of the walk that is collected automatically by a GPS receiver. I had been meaning to buy a GPS receiver anyway, for a new project I had in mind, and after some research of the different models available, I settled on a Garmin <a href="https://buy.garmin.com/shop/shop.do?cID=145&pID=309" target="_blank">GPSmap60cx</a>, and found one at the <a href="http://www.globalgizmos.co.uk/" target="_blank">Global Gizmos</a> site for a very good price.</p>

<p>The GPS receiver can perform a number of tasks. It can show my position and altitude, and display this on a basic map. It can monitor all my movements, and tell me how long I have been walking, how far I've been, and the speed I walk at. It can even tell me how long my lunch-break was! It records the route I take, and this 'track file' is the one that I match up with my photos when I get back from my walk. More about that on <a href="http://www.mapability.com/travel/blogs/2007/09/how_to_geotag_p_1.html" target="_blank">another page</a>, if you are interested in the technical details. For now, I'll share my walks with you...</p>

<p><div class="nonfloatleft"><img src="http://www.mapability.com/blogs/gps/images/2007-09-10/DSC06513_s.jpg" width="400" height="300" alt="Copyright MapAbility.Com" border="0" /><br><span class="phototitle">Walk No. 1 - Pestalozzi to Sedlescombe</span></div></p>

<p>Walk No.1 (<a href="http://www.mapability.com/travel/maps/map1.php" target="_blank">See on map</a> : <a href="http://www.mapability.com/gallery2/v/pestwalk/walk01/" target="_blank">See in Gallery</a>) was an exploratory walk through some of the woods on the Pestalozzi estate, then past the Sedlescombe playing fields and into the village of Sedlescombe, as far as the pub, just to 'test the technology'. Click <a href="http://www.mapability.com/travel/maps/map1.php" target="_blank">HERE</a> to open the map and photographs in a new browser. The route of my walk is overlaid on a combined map and satellite photo.  Each of the red markers corresponds to a photo that I took along the way. Click on any one to see a thumbnail of the photo, with descriptive text. You can also click on the thumbnail to display the full-sized image in a new browser. Pretty neat, eh ?! </p>

<p>Useful tips: You can zoom in and out using the '+' and '-' buttons. To move the map, you can either click-and-drag with your left mouse-button, or use the directional buttons in the top-left of the screen. You can also click-and-drag the tiny blue overview-map at the bottom right of the screen. You can chose a background of either a map, the satellite image, or a hybrid of the two using the buttons at the top-right of the screen.</p>

<p><div class="nonfloatleft"><img src="http://www.mapability.com/blogs/gps/images/2007-09-10/DSC06538_s.jpg" width="400" height="300" alt="Copyright MapAbility.Com" border="0" /><br><span class="phototitle">Walk No. 2 - Pestalozzi via Battle and Whatlington</span></div></p>

<p>Walk No.2 (<a href="http://www.mapability.com/travel/maps/map2.php" target="_blank">See on map</a> : <a href="http://www.mapability.com/gallery2/v/pestwalk/walk02/" target="_blank">See in Gallery</a>),a total of 20Km, saw me being a bit more adventurous. I started at Pestalozzi on a sunny August morning, and walked east then south to pick up the <a href="http://www.1066country.com/" target="_blank">1066 Country Walk</a>, which is a 50km footpath from Pevensey to Rye. The footpath follows, or so it is claimed, the actual footsteps of William the Conqueror when he landed at Pevensey and then marched to the town of Battle, where he defeated King Harold in in what many people know as the battle of Hastings. It is a lovely route, through stunning countryside, fields and woodland with comparatively few people about. Crossing the busy A21 London Road, the walk continues across the Sedlescombe Golf Club, then through the Great Wood to the town of <a href="http://www.battle-sussex.co.uk/" target="_blank">Battle</a>, with its ancient church of St Marys, and the famous Abbey of St Martin, built in 1338. Battle is a very popular tourist destination, and was quite busy that day, so I didn't stay long, but headed up the Netherfield Road to the Battle Golf Club. A pleasant walk by the side of the fairways took me into Archer Wood, an ancient piece of English woodland with a very special atmosphere to it. Hidden right in the middle, I saw one of the most beautiful Beech trees ever - do look at the photograph. Crossing the busy A2100 London Road again, I headed across countryside again, through woods and down tiny leafy lanes. Just before Whatlington the path diverts along a little riverbank, with some of the biggest willows I have ever seen. Sitting on a little foot-bridge, eating my sandwiches, I was startled by the sudden appearance of a <a href="http://en.wikipedia.org/wiki/Mink" target="_blank">Mink</a> which came dashing through the undergrowth and leapt on to the bridge. Whether he had smelt the Sandwich Spread, or whether he was just passing through, I don't know, but when he spotted me he leapt straight off the bridge and back into the bushes. I don't know which of us was the more startled! My walk finished by crossing the A21 road, then taking a tiny footpath that follows the water-meadows next to the River Brede, back to Sedlescombe village, and thence to Pestalozzi.</p>

<p><div class="nonfloatleft"><img src="http://www.mapability.com/blogs/gps/images/2007-09-10/DSC06632_s.jpg" width="400" height="300" alt="Copyright MapAbility.Com" border="0" /><br><span class="phototitle">Walk No. 3 - Pestalozzi via Brede to Powdermill Reservoir</span></div></p>

<p>Walk No.3 (<a href="http://www.mapability.com/travel/maps/map3.php" target="_blank">See on map</a> : <a href="http://www.mapability.com/gallery2/v/pestwalk/walk03/" target="_blank">See in Gallery</a>), also a total of 20Km, took place a couple of weekends later, once the rainy weather had come to an end. I headed back to the 1066 Country Walk, joining it at the same place as before, but this time I went east, to the village of Westfield. Through pleasant nut woods, then across open fields with fine views of the surrounding countryside. The path went under the railway line near Doleman, affording me a close look at a fine brick bridge, only seen these days by cattle and walkers. Continuing by the side of the pleasant Doleman Ditch, with views of the local swans, I met an elderly walker coming in the other direction. We stopped for a chat, and when he learnt where I had come from, he told me that he was involved in the original survey of land for the buildings at Pestalozzi! Its a small world, sometimes! After a break for lunch, watched by cormorants, I continued on to the quaint village of Brede, which has an imposing old church. Nearby is a beacon, one of a chain of more than 1000 that are sited on high points all over England. Originally designed to warn the countryside of invasion or other catastrophe, they are lit these days to celebrate great national events, such as the Queen's Golden Jubilee or the anniversary of the Battle of Trafalgar. Continuing on over fields and through woodland, I reached the picturesque Wards Wood, which surrounds the Powdermill Reservoir. Unfortunately the reservoir isn't open to the public, and the walk through the woods keeps well away from the water's edge, but the woods are a lovely place in themselves to walk through, with many broad-leaved and coniferous trees to be spotted. One area was obviously a hazel <a href="http://en.wikipedia.org/wiki/Coppice" target="_blank">coppice</a> at one time, but now has been left to run to its own devices, which is a pity. I guess there are just too few <a href="http://www.ukcraftfairs.com/guide-to-bodging.asp" target="_blank">bodgers</a> around these days. Heading south towards Sedlescombe, I came across a tiny stand of <a href="http://www.hops.co.uk/sectionone/KentHistory.htm" target="_blank">hop</a> poles, with the hop vines growing up the strings in the traditional way. There used to be 1000s of acres of hops grown in the south of England, but these days, like the bodgers, they are few and far between. I finished my walk in the village of Sedlescombe, passing the pub and the village pump, then back across the River Brede to Pestalozzi International Village.</p>

<p><div class="nonfloatleft"><img src="http://www.mapability.com/blogs/gps/images/2007-09-10/DSC06675_s.jpg" width="400" height="300" alt="Copyright MapAbility.Com" border="0" /><br><span class="phototitle">Walk No. 4 - Hastings via Country Park to Covehurst Bay</span></div></p>

<p>Walk No.4 (<a href="http://www.mapability.com/travel/maps/map4.php" target="_blank">See on map</a> : <a href="http://www.mapability.com/gallery2/v/pestwalk/walk04/" target="_blank">See in Gallery</a>), a total of 10Km, took place along the cliffs just next to Hastings, my nearest large town. I had had to drive two people to the railway station: Amod, one of the 2nd year students, who was leaving to go to university in Boston, USA, and Alejandra, a Spanish volunteer who had spent the summer at Pestalozzi, helping in Swiss Hall. It seemed a good idea to take advantage of being in Hastings, and go for a walk along the picturesque <a href="http://www.walkingpages.co.uk/trails_paths/LDP_saxonshoreway.htm" target="_blank">Saxon Shore Way</a>, another long distance path that runs the 262km from Hastings to Gravesend. This morning, though, I was just to do a few miles of it, as I had to get back to Pestalozzi for luncheon. For a change, I had a companion with me: Prawash Gautam, a Nepali student who had also spent the last 2 years at Pestalozzi and was due to fly to a university at Bremen tomorrow. We set out from the Hastings 'Old Town' with its iconic 'Net Shops'" — these are wooden constructions, weatherboarded and tarred, of various shapes and sizes, used for storage. The buildings were built tall and narrow to avoid payment of ground tax. Hastings has a small funicular railway that takes passengers to the top of the cliffs, but as this was closed for maintenance, we climbed the possibly-hundreds of steps to the top, 111 metres above the sea. The walk continues along the coast, though there is not as much view of the sea as you might expect, due to large bramble patches. This is a popular walk for the locals, especially on such a sunny day as this was, though it is not for the unfit or infirm as the path frequently descends and ascends large numbers of steps when ever a new bay or cove is crossed. Much of the walk is through mixed deciduous woodland, especially in Covehurst Wood, a protected National Park. We continued as far as Covehurst Bay to see the impressive though deserted Coastguard Lookout Station, with its tower of direction-finding and communications aerials and its huge coastal radar installation. Our path then joined the Hastings-link of the 1066 Country Walk, mentioned elsewhere on this page, and thus back across inland fields and footpaths to Hastings Old Town, and our parked car.</p>

<p><div class="nonfloatleft"><img src="http://www.mapability.com/blogs/gps/images/2007-09-10/DSC06740_s.jpg" width="400" height="300" alt="Copyright MapAbility.Com" border="0" /><br><span class="phototitle">Walk No. 5 - Brede High Woods to Robertsbridge</span></div></p>

<p>Walk No.5 (<a href="http://www.mapability.com/travel/maps/map5.php" target="_blank">See on map</a> : <a href="http://www.mapability.com/gallery2/v/pestwalk/walk05/" target="_blank">See in Gallery</a>), a total of 27Km, was the longest one so far. With a weekend of driving duties ahead of me, I took the day off on the Friday beforehand. It was a lovely day for a walk - some clouds, and not as hot as it has been recently. Starting at Pestalozzi, I took a footpath that bypasses Sedlescombe village and heads for Lower Jacobs farm, and the suprise sighting of a <a href="http://www.mapability.com/gallery2/v/pestwalk/walk05/DSC06695.JPG.html" target="_blank">lama</a>. Continuing north to Brede High Woods again, I took a different path through some atractive woodland cleared of undergrowth, though still no views of the Powdermill Reservoir. Crossing the busy B2089 my walk took me across a picturesque valley to Colliers Green. Bypassing Staplecross, I walked north on tiny footpaths across farmland, orchards, and woodland, to the River Rother. I was hoping to have my luncheon at Robertsbridge Abbey, which is shown on the map as 'Remains of Cistercian Abbey' but this is now in private hands, and doesn't welcome visitors. At nearby Redlands Farm it was nice to see not only a large field of <a href="http://www.mapability.com/gallery2/v/pestwalk/walk05/DSC06722.JPG.html" target="_blank">hop poles and hops</a> still present in the English countryside, but also those hops being harvested and then dried and packed into the traditional long <a href="http://www.hops.co.uk/sectionthree/Growing.htm" target="_blank">hop pockets</a>. Crossing the A21 London Road via a convenient footbridge, I entered Roberstbridge, which a most attractive country town, with some lovely old houses. Unfortunately too many of these are obscured by a multitude of cars parked on every possible bit of road. Roberstbridge was to be the furthest north I would go that day. Leaving it, I crossed under the railway line and took the footpath that runs next to it, past the Darvell community, whose children I could hear playing in the distance. After more woods, the path crossed under the railway line again and headed for Mountfield Court, a beautiful and large country house set on a hilltop, with excellent views over the surrounding parkland. Apparently the house is open to the public occasionally, for charity, but today all was quiet and the house closed. The path passes the large walled garden, once providing food for the big house, though what it is being used for these days is hard to say. The satellite image below shows little activity in the garden, though this may have been a photo taken in the winter-time.</p>

<p><iframe width="425" height="350" frameborder="0" scrolling="no" marginheight="0" marginwidth="0" src="http://maps.google.co.uk/maps?hl=en&amp;ie=UTF8&amp;oe=UTF-8&amp;q=&amp;ll=50.957771,0.471404&amp;spn=0.002007,0.004302&amp;t=k&amp;z=18&amp;om=1&amp;output=embed&amp;s=AARTsJonLBOP5MmQ1Yz53ZhZZSNp4hz7Cg"></iframe><br /><small><a href="http://maps.google.co.uk/maps?hl=en&amp;ie=UTF8&amp;oe=UTF-8&amp;q=&amp;ll=50.957771,0.471404&amp;spn=0.002007,0.004302&amp;t=k&amp;z=18&amp;om=1&amp;source=embed" style="color:#0000FF;text-align:left">View Larger Map</a></small></p>

<p>Leaving Mountfield Court, I walked to the tiny village of Mountfield itself, which has a beautiful country church of All Saints. I spent a bit of time looking both inside and out, then noticing how time  was getting on, I carried on across fields to Hoath Wood, and thence to the A2100 London Road, which was busy with evening commuters. The path after this leads through Spring Wood, though the owner would obviously prefer people not to go on this public right of way, as the <a href="http://www.mapability.com/gallery2/v/pestwalk/walk05/DSC06752.JPG.html" target="_blank">gates</a> are clearly marked 'No Access'. Obviously most people are put off entering by this, so the path through the woods is little used, though easy enough to follow as it runs along one of the tributaries of the River Line. It reminded me of 'The Wild Wood' from Kenneth Grahame's famous book <a href="http://en.wikipedia.org/wiki/The_Wind_in_the_Willows" target="_blank">The Wind in the Willows</a>. Passing a flock of black sheep, I arrived at Whatlington. The rest of my route back to Sedlescombe and the Pestalozzi International village was on familar ground, as it duplicated a <a href="http://www.mapability.com/gallery2/v/pestwalk/walk02/" target="_blank">walk</a> that I had done before. I arrived back at Swiss Hall just in time for dinner - very welcome after a walk of over 27kms!</p>

<p>I haven't had time to write any details about walk No.6 (<a href="http://www.mapability.com/travel/maps/map6.php" target="_blank">See on map</a> : <a href="http://www.mapability.com/gallery2/v/pestwalk/walk06/" target="_blank">See in Gallery</a>), or walk No.7 (<a href="http://www.mapability.com/travel/maps/map7.php" target="_blank">See on map</a> : <a href="http://www.mapability.com/gallery2/v/pestwalk/walk07/" target="_blank">See in Gallery</a>), as yet, but the maps and galleries are all there, so please take a look, and enjoy the wonderful scenery.</p>]]>
        
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<entry>
    <title>How to Geo-Tag Photos</title>
    <link rel="alternate" type="text/html" href="http://www.mapability.com/blogs/gps/2007/09/how-to-geotag-photos.html" />
    <id>tag:www.mapability.com,2007:/blogs/gps//2.69</id>

    <published>2007-09-10T16:53:57Z</published>
    <updated>2008-07-08T03:34:32Z</updated>

    <summary>This page describes my experiences whilst geo-tagging my photos, and how I used these photos online. Some background: Digital photos saved in the .jpg or .tif format, as most of them are, have information included with the photos that many...</summary>
    <author>
        <name>Tim Makins</name>
        
    </author>
    
    
    <content type="html" xml:lang="en" xml:base="http://www.mapability.com/blogs/gps/">
        <![CDATA[<p>This page describes my experiences whilst geo-tagging my photos, and how I used these photos online.</p>

<p>Some background: Digital photos saved in the .jpg or .tif format, as most of them are, have information included with the photos that many people are not aware of. The information is kept in two 'tags' that are embedded in the  photo-file itself - the <a href="http://en.wikipedia.org/wiki/Exchangeable_image_file_format" target="_blank">EXIF</a> tag, and the <a href="http://www.ap.org/apserver/userguide/codes.htm" target="_blank">IPTC</a> tag. They can be easily viewed with the right software - more about that later.</p>

<p>Some of the information in the tags is saved automatically by many cameras, and may include details of the type of camera used, the shutter speed, aperture setting, ISO rating, time and date that the photo was taken, etc. Other information can be added manually - this might be such data as the photographer's name, a title or a caption. In the <a href="http://exif.org/specifications.html" target="_blank">list</a> of EXIF tags there is also a section for GPS position - in other words, the location of the camera when the photo was taken. This opens up all kinds of exciting possiblities, allowing a photo to be allied to an online map or earth-viewer, or to have its position entered to a database which could then be searched according to geographical coordinates, locating, for instance, a photograph nearest to a certain point or place.</p>

<p><iframe width="660" height="350" frameborder="0" scrolling="no" marginheight="0" marginwidth="0" src="http://www.mapability.com/travel/maps/map3.php"></iframe><br /><small><a href="http://www.mapability.com/travel/maps/map3.php" style="color:#0000FF;text-align:left" target="_blank">View Larger Map in a new Browser</a></small></p>

<p>Here's a map of one of my walks. Each marker hides a photo - click on one to see! You can drag the map around, or zoom in and out. All of this is done with geo-code photos !</p>

<p><b>Why Geo-Tag Photos?</b><br /><br />
Geo-tagged photos can be used for a number of purposes. These might be:<br />
1/ To show a view of a certain position or location.<br />
2/ To record the position of a particular object or view.<br />
3/ To show the location of views that can be seen whilst proceding from point to point.<br />
4/ To capture the position of a unique event that doesn't normally occur there.</p>

<p>You might combine 1 or more of the above as reasons for geo-tagging your photos. For instance, I take photos on my walks to show people what the countryside around here is like, but I also like taking photos, and keep trying to take better ones. Most, though not all, of my photos try to be photos that stand alone by themselves. If I was just documenting my walks, I would take photos every 100 metres or so, regardless of what the photos came out like. I might also take photos that always looked in the direction I was walking, not to the sides, or behind me.</p>

<p>My photos, once geo-tagged, can be referenced to any mapping system. I can upload those photos to services such as <a href="http://www.panoramio.com/" target="_blank">Panoramio</a> or <a href="http://www.flickr.com/" target="_blank">Flickr</a>. My photos carry their position permanently embedded in their EXIF tags. People could even use this data to find where I was at a particular time, or to see the view that I saw for themselves. The possibilities of geo-tagged photos are only just being discovered, but its a sure thing that they will be vital in the future. Protect yourself against image-obsolescence by Geo-Tagging right now!</p>

<p><b>How to Geo-Tag Photos</b><br /><br />
To save the location in the embedded EXIF tag of the photo, you can either do it when the photo is taken, or later on, when you are back at your computer.</p>

<p>To do this when a photo is taken, you will need a camera that has these capabilities. Not many do so. One popular model is the Nikon D200, which can be connected either directly to a GPS receiver using home made or purchased cables, or via a BlueTooth link using the <a href="https://ecommerce.redhensystems.com/pc-47-2-blue2can.aspx" target="_blank">RedHen</a> unit and a GPS receiver equipped with <a href="http://www.eastgear.com/shop/product_info.php?products_id=946" target="_blank">BlueTooth</a>. Other cameras include the Canon EOS 1D Mark III, the Fuji S5, Kodak's DC265 and DC290, and the Ricoh 500SE.</p>

<p><img src="http://www.mapability.com/blogs/gps/images/2007-09-10/robogeo.jpg" width="660px" height="400px" border="0" /></p>

<p>Choosing to geo-tag photos once you are back at your computer allows you to use practically any digital camera. You can even geo-tag scanned negatives or tranparencies! First, you will need some software that can accomplish this. Whilst a knowledgeable person could geo-tag with a simple text-editor, it is much more sensible to chose a program designed for the task. Various programs are available: these can be divided into the following categories:</p>

<p>a/ Command Line - Manual Entry<br />
This category assumes that you have a list of coordinates ready to enter in the EXIF tag of each photos. An excellent and well-regarded tool that can do this is <a href="http://www.sno.phy.queensu.ca/~phil/exiftool/" target="_blank">ExifTool</a> by Phil Harvey. This program is platform-independent, and performs all manner of tasks to do with reading and writing photo tag-data. It also does it with out degrading the original image - an important point to note when considering a choice of software. The last thing you want is to do a batch-process on your original files and find that they have all been degraded whilst having their tags changed!</p>

<p>The problem with Command-Line entry is that it is not very user-friendly - many people these days prefer a program that will hold your hand a little and monitor what you are doing through a familiar window.</p>

<p>b/ Simple GUI (Graphics User Interface) - Manual Entry<br />
For those who prefer a GUI, there are 2 progams that provide a shell for ExifTool, allowing you to use the same program as above without needing to know or type in a long list of complex commands. <br />
The down-side, though, is that neither program provides the full functionality of ExifTool. Perhaps one day someone will write one, but in the meantime we have these:<br />
  1/<a href="http://freeweb.siol.net/hrastni3/foto/exif/exiftoolgui.htm" target="_blank">ExifTool GUI for Windows</a><br />
  2/<a href="http://home.wi.rr.com/dick/ExifAuto.htm" target="_blank">ExifAuto</a></p>

<p>c/ Complex GUI - Automatic Entry<br />
The programs above assume you wish to enter the location for each photo from a list. But there are other, more automatic ways of geo-tagging. The first makes use of the popular Google Earth service to identify visually just where the photo was taken, and then grab the coordinates that you need. One program that can do this is Google's <a href="http://picasa.google.co.uk/support/bin/" target="_blank">Picasa</a>. <a href="http://picasa.google.co.uk/support/bin/answer.py?answer=43896&query=exif&topic=&type" target="_blank">Here</a> are some tips to help. Alternatively, you can use <a href="http://www.robogeo.com/home/" target="_blank">RoboGeo</a>, which has many facilities in addition to its Google Earth capabilities.</p>

<p><a href="https://buy.garmin.com/shop/shop.do?cID=145&pID=309" target="_blank"><img src="http://www.mapability.com/blogs/gps/images/2007-09-10/gpsmap60cx.jpg" width="200px" height="300px" border="0" align="left" /></a> One of these takes automation even further, by tagging a whole folder of photos without the need for you to enter a single latitude or longitude! The way it does it is rather clever. When you set out for your morning photo-shoot, you turn on your GPS receiver, and tell it to create a Track. You then turn on your camera, and check that its internal clock is set to the same tme as the GPS. Having done that, you can put the GPS in your bag or clip it to your belt, and forget about it for the rest of the day. Whenever you snap a photo, your camera will record on the EXIF tag of that image the exact time, to the second, when the photo was taken. When you get back to your computer, you download the Track-file from your GPS. RoboGeo will then check the time that each photo was taken, and unless you are flying a jet-fighter plane, will work out from the Track-file exactly where you were, and write the EXIF location-tags accordingly. Pretty neat, huh ?!</p>

<p>You can use a dedicated GPS receiver made for this job, such as the Sony <a href="http://www.sony.co.uk/view/ShowProduct.action?product=GPS-CS1KA&site=odw_en_GB&pageType=Compatibles&imageType=Main&category=CAC+Other+Accessories#tab" target="_blank">GPS-CS1KA</a> GPS Location Recorder, which is small enough to hang on your belt-hook un-noticed, or you can use the GPS receiver you already have - for me this is the  Garmin <a href="https://buy.garmin.com/shop/shop.do?cID=145&pID=309" target="_blank">GPSmap60cx</a>, which I found at the <a href="http://www.globalgizmos.co.uk/" target="_blank">Global Gizmos</a>site for a very good price.</p> </p>

<p>RoboGeo is not the only software that can geo-tag photos in this way, though I do like its functionality, and its additional capabilities that let it output a Google Map complete with thumbnails (see one of mine <a href="http://www.mapability.com/travel/maps/map5.php" target="_blank">here</a>) or a Google Earth .kml file, or even ESRI shapefiles that can be used in more complex display and GIS appplications.</p>

<p>Also worth trying is <a href="http://code.google.com/p/gpicsync/wiki/GettingStarted" target="_blank">GPicSync</a>. It is a free download that works with any standard GPS receiver, and has an active user group.</p>

<p>Another program is <a href="http://software.copiks.se/photomapper/" target="_blank">PhotoMapper</a>, a free GPL licensed GPS Photo-Tagging software application.</p>

<p><b>Important Points</b><br /><br />
The above 'automatic' programs rely on a log of your track, stored by a GPS receiver. This track will be composed of a number of tracklog points that record your position as you moved about during the day. In order that you can cross-reference your photos, it is <b>VITALLY IMPORTANT</b> that each point also has a time associated with it. You should be aware that when you Save a track in your Garmin receiver, not only is the time for each point deleted, but also 5 out of every 6 trackpoints are discarded!!! You should also be aware that GPX files, which are a collection of points from a track, DO NOT have the time for each point included, so for the purposes of geo-tagging photos, a .gpx file is USELESS !!! What can be done about this? Well, the only log in your GPS that retains the time for each position is the one called the Active Tracklog. This is the one that you need to use. RoboGeo uses this file when geo-tagging photos, though be aware that the Active Tracklog contains all the tracks you have made recently, and when presented with it, RoboGeo will include all the trackpoints with your map, which is a bit crazy if you only want to use one track. You could of course delete the old Active Tracklog before you start the day's photoshoot, in which case only your new track will be included in the Active Tracklog. Alternatively you can use a program that will let you choose which bit of the Tracklog to include. A useful program that does this is the free <a href="http://www.dnr.state.mn.us/mis/gis/tools/arcview/extensions/DNRGarmin/DNRGarmin.html" target="_blank">DNRGarmin</a> GPS application from the Department of Natural Resources at Minnesota State University. You can easily select the section of the Active Tracklog that you need, and save it as a text-file that RoboGeo will utilise. Lets hope that one day Tim Helton will add this same functionality to RoboGeo itself, plus the ability to see the track on a map, and maybe alter it, before it is used in the tagging process.</p>

<p><b>Footnotes</b><br /><br />
You might like to look at the following WikiPedia pages for further ideas:<br />
<a href="http://en.wikipedia.org/wiki/GeoTagging" target="_blank">GeoTagging</a><br />
<a href="http://en.wikipedia.org/wiki/Geocoded_photo" target="_blank">Geocoded Photographs</a></p>]]>
        
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