kml2gmt
kml2gmt - Extract GMT table data from Google Earth KML files
Synopsis
kml2gmt [ kmlfiles ]
[ -Fs|l|p ]
[ -V[level] ]
[ -Z ]
[ -bo<binary> ]
[ -do<nodata> ]
[ -:[i|o] ]
Note: No space is allowed between the option flag and the associated arguments.
Description
kml2gmt reads a Google Earth KML file and outputs a GMT table file.
Only KML files that contain points, lines, or polygons can be processed.
This is a bare-bones operation that aims to extract coordinates and
possibly the name and description tags of each feature. The main use
intended is to capture coordinates modified in Google Earth and then
reinsert the modified data into the original GMT data file. For a more
complete reformatting, consider using ogr2ogr -f “GMT” somefile.gmt
somefile.kml.
Optional Arguments
- kmlfiles
- Name of one or more KML files to work on. If not are given, then
standard input is read.
- -Fs|l|p
- Specify a particular feature type to output. Choose from points (s),
line, or polygon. By default we output all geometries.
- -Z
- Output the altitude coordinates as GMT z coordinates [Default will
output just longitude and latitude].
- -V[level] (more ...)
- Select verbosity level [c].
- -bo[ncols][type] (more ...)
- Select native binary output.
- -donodata (more ...)
- Replace output columns that equal NaN with nodata.
- -:[i|o] (more ...)
- Swap 1st and 2nd column on input and/or output.
- -^ or just -
- Print a short message about the syntax of the command, then exits (NOTE: on Windows use just -).
- -+ or just +
- Print an extensive usage (help) message, including the explanation of
any module-specific option (but not the GMT common options), then exits.
- -? or no arguments
- Print a complete usage (help) message, including the explanation of
options, then exits.
- --version
- Print GMT version and exit.
- --show-datadir
- Print full path to GMT share directory and exit.
Examples
To extract the lon,lat values from the KML file google.kml, try
gmt kml2gmt google.kml -V > google.txt
To separate the point and polygon geometries from the KML file google.kml, try
gmt kml2gmt google.kml -Fp -V > polygons.txt
gmt kml2gmt google.kml -Fs -V > points.txt