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80 lines
3.3 KiB
Plaintext
80 lines
3.3 KiB
Plaintext
New in 2025:
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============
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We now have the boundaries for all the kataster areas in a shapefile (again), we have re-generated GPX files for both 1623 and 1626 as GPX files. Copies are in
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expoweb/documents/boundaries/
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1623.gpx
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1626.gpx
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The original shapefile data is in the files
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expofiles/qgis_resources/boundaries
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4_Teilgruppen_M31_2021_01 .shp. ..shx, .dbf etc etc
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Download ogr2ogr and run this to convert the whole lot to a single 26 MB GPX files.
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$ ogr2ogr -f GPX -nlt MULTILINESTRING -t_srs EPSG:4326 -s_srs EPSG:32633 boundaries.gpx 4_Teilgruppen_UTM_33_N_2021_01.shp -dsco GPX_USE_EXTENSIONS=YES
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The problem is that the shapefile uses polygons, and is in UTM33N, whereas GPX files are just polylines and are in WGS84: hence all the command line parameters.
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The 1623.gpx file was extracted simply by editing it out of the 26 MB gpx file.. It was then run through GPSprune to add the SRTM altitude data.
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Now we can re-engineer the process for making essentials2025.gpx from scratch, without having to bounce back and forth between survex and other formats.
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Status in 2024
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==============
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In 2024 we manually created essentials2024.gpx
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and then updated it to include the deviation around the seilbahn works
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at the end of the car park to make essentials2024divert.gpx
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The folders for each year are for general gpx files from recorded tracks,
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which will be included as surface legs in all.svx.
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gpx_publish is for creating exportable files to personal
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gps devices or smart phones.
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For instructions for the previous version of this, which used
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gpx2survex.exe compiled from ocaml source and libraries, see
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README_ocaml.txt
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From 13 Nov 2023, create essentials.gpx like this.
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To add a new GPS tracklog or waypoint file:
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0. Read the Handbook on this http://expo.survex.com/handbook/essentials.html
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which may be more up to date than this README
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1. Download the .gpx file(s) from your GPS. (On modern Garmin GPSes this is done
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by connecting the GPS using a USB cable and then copying the relevant files
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from the "GPX" directory inside the "Garmin" directory on the USB disk.)
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2. Create a new directory for the year if required (following the "2018"
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example) in the "gpx" subdirectory of the dataset (loser repo).
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Put the .gpx file(s) in the year directory.
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They need to be renamed so as to follow our naming convention
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(see the "2018" directory). No formal distinction needs to be made between
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files containing tracklogs and files containing waypoints (or a mix of the
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two).
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3. Update (or create if currently absent) the additional_info.svx file in
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the year directory following the 2018 example. This is the place to rename
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stations to follow normal conventions and to mark waypoints as entrances,
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etc. The file does not need to be present.
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4. If you have no gpx files for the current year, copy the 'dummy.gpx' file
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from the 2024 year folder.
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5. Open a terminal in this directory loser/ and run
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the make_svx.sh script like this: bash gpx/make_svx.sh
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6. Run "cavern all_gpx.svx" in loser/gpx/ then "aven all_gpx.3d". Check that the
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tracks appear as expected when fixed points / surface surveys are enabled.
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7. cd /loser then run gpx/make_essentials.sh
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8. Commit everything to git and push.
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--HOWEVER the essentials.gpx created by this inserts TRKSEG around every pair
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of points, so this is UNUSABLE on OSMand.
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