NAME
survexport - convert a processed survey data file to another format
SYNOPSIS
survexport [OPTIONS] INPUT_FILE [OUTPUT_FILE]
DESCRIPTION
The input formats supports are all those supported by Survex's "img" library - Survex .3d, Survex .pos, Compass PLT and CMAP XYZ files.
Currently the output formats supported are CSV, DXF, EPS (Encapsulated PostScript), GPX, HPGL for plotters, JSON, KML, Survex POS files, and SVG.
Also survexport can produce Compass .plt files, which were primarily intended for importing into Carto; the principal author of Carto has sadly died and it seems Carto is no longer actively developed, but we've left this support in place in case it is useful - the generated files can be used with Compass itself for example, though they are rather crudely structured.
POS Format
The POS format is a Survex-specific format containing a list of stations with coordinates (ordered x,y,z [East, North, Up]) and complete names. In old versions of Survex it was produced by the (now removed) 3dtopos tool. Since Survex 1.2.19 it can be generated by survexport or by aven's export feature.
The header line is translated to the user's language, but always starts with ( and ends with ).
While not a requirement of the format, in .pos files created by Survex the stations are sorted by name such that numbers occur in the correct order (so 2 before 10). Numbers with a prefix and/or suffix are sorted by the prefix as a string, then the number part as above, then by the suffix as a string, so you'd get:
040.sv8 040.sv8a 040.sv8b 040.sv8c 040.sv9 040.sv10 040.sv11 40_entrance_tag 40b_entrance_tag
DXF Format
DXF export separates Splays, Surface legs, Surface points, survey legs, and survey stations onto separate layers. Splays will export dotted, and surface legs dashed. This is not currently configurable.
OPTIONS
- -s, --survey=SURVEY
-
only load the sub-survey with this prefix
- --scale=SCALE
-
scale (50, 0.02, 1:50 and 2:100 all mean 1:50)
- --bearing=BEARING
-
bearing (90, 90d, 100g all mean 90°)
- --tilt=TILT
-
tilt (45, 45d, 50g, 100% all mean 45°)
- --plan
-
plan view (equivalent to --tilt=-90)
- --elevation
-
elevation view (equivalent to --tilt=0)
- --legs
-
underground survey legs
- --surface-legs
-
surface survey legs
- --splays
-
splay legs
- --crosses
-
station markers
- --station-names
-
station labels
- --entrances
-
entrances
- --fixes
-
fixed points
- --exports
-
exported stations
- --cross-sections
-
cross-sections
- --walls
-
walls
- --passages
-
passages
- --origin-in-centre
-
origin in centre
- --full-coordinates
-
full coordinates
- --clamp-to-ground
-
clamp to ground
- --defaults
-
include items exported by default
- -g, --grid, --grid=GRID
-
generate grid with spacing GRID metres (default 100)
- -t, --text-height=TEXT_HEIGHT
-
station labels text height (default 0.6)
- -m, --marker-size=MARKER_SIZE
-
station marker size (default 0.8)
- --csv
-
produce CSV output
- --dxf
-
produce DXF output
- --eps
-
produce EPS output
- --gpx
-
produce GPX output
- --hpgl
-
produce HPGL output
- --json
-
produce JSON output
- --kml
-
produce KML output
- --plt
-
produce Compass PLT output for Carto
- --pos
-
produce Survex POS output
- --svg
-
produce SVG output
- --help
-
display short help and exit
- --version
-
output version information and exit
SEE ALSO
aven(1), cavern(1), diffpos(1), dump3d(1), extend(1), sorterr(1)
COPYRIGHT
1998-2025