Difference between revisions of "AddOns/GRASS7/vector"

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: '''Author:''' Moritz Lennert
: '''Author:''' Moritz Lennert
==== v.lidar.mcc ====
==== v.lidar.mcc ====

Revision as of 05:36, 17 October 2014

See also

svn co https://svn.osgeo.org/grass/grass-addons/grass7/vector/


v.area.weigh (src) creates a raster surface from vector areas using known cell weights and preserving the value of the area attribute. For example, if the selected area attribute is the population count, the sum of all pixel values in a given area is equal to the area's population count with the area's population concentrated on the known location of urban areas.

Author: Markus Metz


v.build.pg (src) builds PostGIS topology for feature tables linked via v.external.


v.centerline (src) takes a map of vector lines and creates a new map containing a central line

Author: Moritz Lennert


v.centerpoint (src) calculates various center points for points, lines and areas: center of gravity, geometric median etc.

Author: Markus Metz


v.class.mlpy (src) classifies vector features. It is an interface to the mlpy library (Machine Learning Python). Classification is supervised and based on attribute table data. Geometry is not used. A training dataset is always required.


v.colors (src) is much like r.colors, but may be used for vector maps.


v.concave.hull (src) creates a concave hull describing the shape of point clouds.


v.delaunay3d (src) creates a 3D triangulation from an input vector map containing points or centroids.

Requires CGAL library.

Author: Martin Landa


v.external.all (src) creates (using v.external) in the current mapset new pseudo-vector maps for all OGR layers from given OGR datasource (dsn option).


v.habitat.dem (src) calculates DEM and solar derived characteristics of habitat polygons.

Author: Helmut Kudrnovsky


v.in.geopaparazzi (src) imports all elements saved into Geopaparazzi.


v.in.ply (src) is a C program that imports a PLY file and writes it as GRASS vector map.

Author: Markus Metz


v.in.redwg imports DWG files into GRASS., see also here
Author: Rodrigo Rodrigues da Silva


v.in.wfs2 (src) imports OGC WFS maps (Web Feature Service) from external servers.


v.isochrones (src) takes a map of roads and starting points and creates isochrone polygons around the starting points

Author: Moritz Lennert


v.lidar.mcc (src) applies a Multi Curvature Classification procedure on LiDAR point clouds e.g. for filtering vegetation returns. The module is also usable for discrete LiDAR.

Author: Stefan Blumentrath


v.median (src) create the median point of a cloud of point.


v.net.salesman.opt (src) estimates the optimal route to visit nodes on a vector network and optionally tries to improve the result.


v.out.ply (src) is a C program that exports a GRASS vector map as PLY file.

Author: Markus Metz


v.ply.rectify (src) imports a PLY point cloud, georeferences and exports it. The first three vertex properties must be the x, y, z coordinates with property names "x", "y", "z", in this order.

Author: Markus Metz


v.surf.icw (src): Inverse cost weighting is like inverse distance weighted (IDW) interpolation, but uses cost instead of shortest Euclidean distance. In this way solid barriers and molasses zones may be correctly taken into account.

Author: Hamish Bowman


v.to.lines (src): converts vector polygons (boundaries) to lines as well as vector points to lines via triangulations.

Author: Luca Delucchi


v.surf.mass (src) creates a raster surface from vector areas, preserving the value of the area attribute. For example, if the selected area attribute is the population count, the sum of all pixel values in a given area is equal to the area's population count. (manual page)

Author: Markus Metz