Geometry commands is a command line library for processing geometry that follows the unix philosophy. Each command does one thing well (buffer, centroid, envelope) by reading in a geometry, processing the geometry, and writing the geometry out as WKT. Individual commands can be connected with unix pipes. For more information please visit the web site.
- JTS:
http://tsusiatsoftware.net/jts/javadoc/com/vividsolutions/jts/geom/Geometry.html
- Proj4j:
- Args4J:
Geometry input with -g argument:
>>> geom buffer -g "POINT (10 10)" -d 2Geometry input using standard input stream:
>>> echo "POINT (10 10)" | geom buffer -d 20Piping results of one geometry command to another:
>>> geom buffer -g "POINT (10 10)" -d 2 | geom envelopeDetermine if one geometry contains another:
>>> echo "POINT (0 0)" | geom buffer -d 10 | geom contains -o "POINT (5 5)"
true
>>> echo "POINT (0 0)" | geom buffer -d 10 | geom contains -o "POINT (25 25)"
falseBuffer a point, get coordinates, draw coordinates to image, and open the image:
>>> echo "POINT (10 10)" | geom buffer -d 5 | geom coordinates | geom draw && open image.pngList available geometry commands:
>>> geom list
list
buffer
centroid
contains
convexHull
draw
difference
envelope
intersectionEach command contains a --help option:
>>> geom buffer --help
geom buffer: Buffer a geometry by a distance.
--help : Print help message
-c (--endCapStyle) VAL : The end cap style (round, flat/butt, square)
-d (--distance) N : The buffer distance
-g (--geometry) VAL : The input geometry
-q (--quadrantSegments) N : The number of quadrant segments
-s (--singleSided) : The flag for whether the buffer should be single sidedThere is a man page for each subcommand:
>>> man geom-buffer
geom-buffer(1) geom-buffer(1)
NAME
geom buffer
DESCRIPTION
Buffer a geometry by a distance.
USAGE
geom buffer -g "POINT (1 1)" -d 10Finally, there is a bash completion script which makes using geom with bash much easier.
Install it in your .bash_profile:
source /Users/you/geom/shell/geom_bash_compGeometry Commands depends on the Java Topology Suite (JTS) and Proj4j and uses Maven as a build tool.
git checkout https://github.com/jericks/geometrycommands.git cd /geometrycommands mvn clean install
Geometry Commands is open source and licensed under the MIT License.
