expoweb/handbook/troggle/make-essentialsREADME.txt

The folders for each year are for general gpx files from recorded tracks, 
which will be included as surface legs in all.svx.
gpx_publish is for creating exportable files to personal 
gps devices or smart phones.

For instructions for the previous version of this, which used 
gpx2survex.exe compiled from ocaml source and libraries, see
README_ocaml.txt

From 13 Nov 2023, create essentials.gpx like this.

To add a new GPS tracklog or waypoint file:

0. Read the Handbook on this http://expo.survex.com/handbook/essentials.html
which may be more up to date than this README

1. Download the .gpx file(s) from your GPS.  (On modern Garmin GPSes this is done
by connecting the GPS using a USB cable and then copying the relevant files
from the "GPX" directory inside the "Garmin" directory on the USB disk.)

2. Create a new directory for the year if required (following the "2018"
example) in the "gpx" subdirectory of the dataset (loser repo).
Put the .gpx file(s) in the year directory.  
They need to be renamed so as to follow our naming convention
(see the "2018" directory).  No formal distinction needs to be made between
files containing tracklogs and files containing waypoints (or a mix of the
two).

3. Update (or create if currently absent) the additional_info.svx file in
the year directory following the 2018 example.  This is the place to rename
stations to follow normal conventions and to mark waypoints as entrances,
etc.  The file does not need to be present.

4. Open a terminal in this directory loser/ and run 
the make_svx.sh script like this: bash gpx/make_svx.sh

5. Run "cavern all.svx" in loser/gpx/ then "aven all.3d".  Check that the
tracks appear as expected when fixed points / surface surveys are enabled.

6. Commit everything to git and push.

7. run gpx/make_essentials.sh