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42 lines
2.4 KiB
HTML
42 lines
2.4 KiB
HTML
<html><head><title>Making essentials.gpx</title></head><body>
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<h2 id="tophead">CUCC Expedition Handbook</h2>
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<h1>Essential GPS - regenerating the GPX file</h1>
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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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<h3>The "undescended shafts" GPX file</h3>
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This can be generated and downloaded by any web user on the page <a href=" /caves_undropped">undropped caves</a> page. A copy is manually (infrequently) copied to <var>expofiles</var> at <a href="/expofiles/gpslogs/essentials/undropped.gpx" download>gpslogs/essentials/undropped.gpx</a>.
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<hr />
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<a href="/handbook/computing/myphone.html">Your phone on expo</a> - Do not select the "high accuracy" location setting on your phone<br />
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<a href="/logbookentry/2024-07-21/2024-07-21c">Photo GPS</a> - Is unreliable unless you follow procedure<br />
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<a href="/handbook/survey/gps.htm">Locating entrances by GPS</a> - from the survey handbook section<br /></body></html>
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