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handbook and areas doccm

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Philip Sargent
2020-05-24 22:39:55 +01:00
parent 317637d396
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handbook/essentials.html
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@@ -84,19 +84,20 @@ Connect the GPS device to your laptop (or the expo laptop) using the USB cable.
of the device.
You will see a subfolder called "GARMIN". Open the folder "GARMIN" and copy the file essentials.gpx which you
downloaded into that folder.
<h3>Old Garmin handheld GPS devices</h3>
<p>
These need the Garmin communication protocol to import cave entrance locations (waypoints) and paths (tracks).
You can't do it by simply copying files.
This means that you need special software on your laptop in addition to a USB cable that
connects your laptop to the Garmin device.
<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.
<p>
<figure>
<img src="t/usb-minib-5pin-m-c.jpg" alt="mini-USB socket" />
<figcaption><em>mini-USB b socket</em></figcaption>
</figure>
If your Garmin has a <b>mini</b>-USB socket, rather than the usual micro-USB found in phones, then you might have an "old" Garmin handheld, but some modern handhelds still use this old socket.
<h3>Very Old Garmin handheld GPS devices</h3>
<p>
These need the Garmin communication protocol to import cave entrance locations (waypoints) and paths (tracks).
You can't do it by simply copying files.
This means that you need special software on your laptop in addition to a USB cable that
connects your laptop to the Garmin device.
<p>Once you have the right cable and connected your handheld to your laptop:
<ul>
<li>On a Windows machine, use "GPSbabel for Windows" which has an easy to use graphical user interface:
@@ -115,11 +116,11 @@ devise new routes to reach them.
<p>
To regenerate the <i>most recent version</i> which contains the cave entrances discovered during expo
you will need to ask someone who is competent in logging into the server and running scripts.
<p>The data is in the version control system <a href="computing/repos.html">repository</a> :loser: in
<p>The data is in the version control system <a href="computing/repos.html">repository</a> <var>:loser:</var> in
<pre>
loser/gpx/
</pre>
and is generated from the survex data by a script. It is best to do this on a laptop which has the entire :loser:
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>
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.
<p>The most recent track data will have been uploaded by an expoer into e.g.
@@ -133,9 +134,9 @@ repo downloaded onto it (e.g. the <i>expo laptop</i>) rather than on the server
This is actually entirely hand-edited from original tracks. The only survex data it uses is the entrances waypoints which are exported
by the script which has been hand-edited in. It also has the kataster boundaries hand-edited in.
<p>Last year's (17 July 2018)
<p>The 17 July 2018 version
can be downloaded from here : <a href="essentials.gpx" download>essentials.gpx</a> (190K).
(This is a symlink to loser/gpx/essentials.gpx).
(This is a symlink to loser/gpx/essentials.gpx). This works fine on laptops but most phones don't like this sort of link.
<hr />