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192 lines
10 KiB
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<meta http-equiv="Content-Type" content="text/html; charset=utf8" />
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<title>Essential GPS information</title>
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<link rel="stylesheet" type="text/css" href=/css/main2.css />
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</head>
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<h2 id="tophead">CUCC Expedition Handbook</h2>
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<h1>Essential GPS information</h1>
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<h2>GPS basics for safety</h2>
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<p><b>SAFETY</b>. Everyone <a href="/guidebook/plateau.html">gets lost on the plateau</a>.
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<p>Don't get lost for long as this causes rescue plans to be initiated.
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<h3>What EVERYONE needs to do</h3>
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<ul>
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<li>Install a GPS app on your phone.</li>
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<li>Download the locations of key cave entrances, camps and other landmarks and the paths between them.</li>
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<li>When walking on the plateau, turn on <b>location tracking</b> in Google Maps, or your GPS app, before you leave the car park and share your location with someone you know at base camp and/or top camp.</li>
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</ul>
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<p><b>Don't be misled by the apparent simplicity</b> of the tracks. The plateau is very broken and is an unremitting extent of cliffs, holes and impassable dwarf-larch scrub ("bunde" as it is known on expo). You can be 5m from the route and have lost it entirely. The <a href="/guidebook/walkin.htm">walk to and from</a>
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col leading to the plateau is comparatively easy is it is an obvious path, and marked and signposted in the earlier section.</p>
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<a href="http://expo.survex.com/expofiles/gpslogs/essentials/"><img width=60% src="gps-essentials/essentials2024divert.jpg" alt="screenshot of the GPS file"></a>
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<h3>Quick start for Android devices, 2024</h3>
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<ul>
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<li>Install OsmAnd from the Play Store (recommended GPS app)</li>
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<li>In the settings in OsmAnd, go to Maps & Resources -> Europe -> Austria -> Upper Austria and download the standard map.</li>
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<li>Download the essential tracks and waypoints by long pressing on <a download href="gps-essentials/essentials2024divert.gpx">this link</a>. You should be presented with the option to open the file with OsmAnd - do this.</li>
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<li>OsmAnd defaults to not displaying labels on the waypoints (caves and camps). Tap on a point to reveal what it represents. To override this behavior, go to 'configure map', and turn on 'Point Labels (POI, Favourites)'.</li>
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</ul>
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<h3>Quick start for iPhones</h3>
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<p>There is no such thing as a quick installation procedure for iPhones. The prefered app is gaia GPS.</p>
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<p><b>If the quick start doesn't work for you, go to the <a href="#general">general instructions</a> further down this page.</b></p>
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<h2>GPS for prospecting</h2>
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<p>When using your phone for prospecting for new caves, or refinding old entrances, there are two further useful files that you should consider downloading:</p>
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<ul>
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<li><a download href="gps-essentials/entrances2024.gpx">entrances2024</a> - location of all known cave entrances.</li>
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<li><a download href="gps-essentials/kataster-boundaries-as-tracks.gpx">kataster-boundaries-as-tracks</a> - these are <b>not paths</b> but separate areas with
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different mapping designations.
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These are the smooth, curved lines. They are used by prospectors when naming new caves.</li>
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</ul>
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<p>If you are looking for how to upload one of your own GPS tracks, go to <a href="/handbook/computing/gpxupload.html">gpxupload</a>.
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</p>
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<p>The OsmAnd documentation says:
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<ul>
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<li>"The simplest way to view a track you've downloaded is to tap on it in your device's file manager and choose to open it in OsmAnd. After that, you'll see the track in My places - My tracks or in the Dashboard - My tracks."
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</ul>
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<p>
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More documentation on this to follow...
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<h2 id="general">General instructions</h2>
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<p>Install a GPS app (e.g. OSMand) <em>first</em>.
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<p>Do one of</p>
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<ul>
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<li><a href="#down">Download the GPX file from the expo server direct to computer/phone/GPS</a> - recommended
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<li><a href="#up">Upload the GPX file to phone/GPS from computer</a>
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</ul>
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<p>or, if you can't get those to work</p>
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<ul>
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<li><a href="#sideways">Download the data to your phone from an online GPS app</a>
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</ul>
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<style>td,th
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{border: solid 1px #ccc; border-radius: 4px; text-align: center;}
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</style>
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<table style="width: 100%;">
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<tr><th>GPX format</th> <th>KML format</th> <th>ZIP of both</th> </tr>
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<tr>
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<td><a download href="gps-essentials/essentials2024divert.gpx">essentials2024</a></td>
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<td><a download href="gps-essentials/essentials2024divert.kml">essentials2024.kml</a></td>
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<td><a download href="gps-essentials/essentials2024divert.zip">essentials2024.zip</a></td>
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</tr>
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<tr>
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<td><a download href="gps-essentials/entrances2024.gpx">entrances2024</a></td>
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<td><a download href="gps-essentials/entrances2024.kml">-</a></td>
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<td><a download href="gps-essentials/entrances2024.zip">-</a></td>
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</tr>
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<tr>
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<td><a download href="gps-essentials/kataster-boundaries-as-tracks.gpx">kataster-boundaries-as-tracks</a></td>
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<td><a download href="gps-essentials/kataster-boundaries-as-tracks.kml">-</a></td>
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<td><a download href="gps-essentials/kataster-boundaries-as-tracks.zip">-</a></td>
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</tr>
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<tr>
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<!--NOTE downloads from the handbook are from /expoweb/ repo and are managed by troggle and the correct "Content type" is set,
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whereas files downloaded from /expofiles/ are just managed by apache and so Chrome on Android munges the filename
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So DO NOT store gpx files for download on /expofiles/ -->
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<td><a download href="/expofiles/gpslogs/essentials/essentials.gpx">essentials</a> (downloads as XML)</td>
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<td><a download href="/expofiles/gpslogs/essentials/essentials.kml">essentials.kml</a></td>
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<td><a download href="/expofiles/gpslogs/essentials/essentials.zip">essentials.zip</a></td>
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</tr>
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</table>
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<h4 id="down">Download the GPS essentials file from the expo server</h4>
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<p><b>BEFORE</b> you download the gpx file, install OSMand on your phone. Then, when the download happens, you will be prompted
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as to which app you want to use to veiw the file and you can select OSMand - but only if you installed OSMand first.
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<p>Use the links in the table at the top of the page.
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<p>
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This is easy on a laptop, but phone browsers make it difficult to download a simple link like that - just clicking will usually (unhelpfully) display it in the browser.</p>
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<p>You need to long-click and pick 'download file' or 'download link' (chrome). Then either:
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<ol>
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<li>Go to your 'Downloads' folder and tap on the GPX file, which should offer to load it in OSMand, or whatever other map software you use, or</li>
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<li>Go into OSMand, select 'My places' and 'IMPORT', then select the file.</li>
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</ol>
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</p>
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<h4 id="up">Upload the GPS essentials file to your device</h4>
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<p>
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This is where it gets tricky because every device and phone app does this differently.</p>
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<h4>GPS phone apps</h4>
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<p>
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This should work the same way whether you have an iPhone or an Android phone.
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<p>We recommended <a href="https://osmand.net/">OsmAnd</a> as it is very capable, but you can use others.
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<p>
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<p>On android phones, this may be best achieved by installing from <a href="https://f-droid.org/">F-Droid</a> rather than the plan store</p>
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<h3>"Modern" Garmin handheld GPS devices</h3>
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<p>
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Connect the GPS device to your laptop (or the expo laptop) using the USB cable. A folder will open on the laptop showing the contents
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of the device.
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You will see a subfolder called "GARMIN". Open the folder "GARMIN" and copy the file essentials.gpx which you
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downloaded into that folder.
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<p>Even modern (2019) Garmin GPS devices use this old style mini-USB socket. So you will need the special cable that comes with the device. An ordinary phone USB cable won't work.
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<p>
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<figure>
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<img src="t/usb-minib-5pin-m-c.jpg" alt="mini-USB socket" />
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<figcaption><em>mini-USB b socket</em></figcaption>
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</figure>
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<h3>Very Old Garmin handheld GPS devices</h3>
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<p>
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These need the Garmin communication protocol to import cave entrance locations (waypoints) and paths (tracks).
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You can't do it by simply copying files.
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This means that you need special software on your laptop in addition to a USB cable that
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connects your laptop to the Garmin device.
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<p>Once you have the right cable and connected your handheld to your laptop:
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<ul>
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<li>On a Windows machine, use "GPSbabel for Windows" which has an easy to use graphical user interface:
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<a href="https://www.gpsbabel.org/download.html">download GPS Babel</a>
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<li>On a Linux machine the core gpsbabel command line utility is probably already installed;
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but there is no simple, easy to use graphical interface.
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Instead you must use other software such as QGIS or Viking (download using your usual Linux software installer)
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which uses gpsbabel to talk to your device.
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If this doesn't work then there are no useful error messages from Viking.
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</ul>
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<h2 id="down">Nerds only: getting the <i>very latest</i> GPS essentials file </h2>
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<p>
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We create a new version of this essential GPS data during expo and as expoers discover new entrances and
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devise new routes to reach them.
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<p>
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To regenerate the <i>most recent version</i> which contains the cave entrances discovered during expo
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you will need to ask someone who is competent in logging into the server and running scripts.
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<p>The data is in the version control system <a href="computing/repos.html">repository</a> <var>:loser:</var> in
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<pre>
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loser/gpx/
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</pre>
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and is generated from the survex data by a script. It is best to do this on a laptop which has the entire <var>:loser:</var>
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repo downloaded onto it (e.g. the <i>expo laptop</i>) rather than on the server itself as the server can run out of memory doing this.
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<p>The most recent track data will have been uploaded by an expoer into e.g.
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<pre>
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expofiles/gpslogs/2019/MichaelSargent/col-to-homecoming-msargent-2019-07-14_18-38_Sun.gpx
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</pre>
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<p>and this will need to be hand-edited into script-generated essentials.gpx file.
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<h3>Regenerating the essentials.gpx file</h3>
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<p>There are two scripts needed for this:
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<a href="troggle/scriptscurrent.html#gps">make_essentials.sh</a> and
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<a href="troggle/scriptscurrent.html#surface">make_svx.sh</a>
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both of which are stored in the <var>:loser:</var> repository in :loser:/gpx/ .
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<p>Read the <a href="troggle/make-essentialsREADME.txt">README</a> file in that directory.
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<p>They are documented in the long list of <a href="troggle/scriptsother.html">Other scripts</a>.
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<hr />
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<li><a href="../index.htm">Back to Expedition Intro page</a></li>
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<li><a href="../../index.htm">Back to CUCC Home page</a></li>
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</ul></body>
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</html>
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