topic_geometry.1grass - Man Page

Topic: geometry

i.image.mosaicMosaics several images and extends colormap.
r.patchCreates a composite raster map layer by using known category values from one (or more) map layer(s) to fill in areas of "no data" in another map layer.
r.thinThins non-null cells that denote linear features in a raster map layer.
v.delaunayCreates a Delaunay triangulation from an input vector map containing points or centroids.
v.drapeConverts 2D vector features to 3D by sampling of elevation raster map.
v.editEdits a vector map, allows adding, deleting and modifying selected vector features.
v.extrudeExtrudes flat vector features to 3D vector features with defined height.
v.hullProduces a 2D/3D convex hull for a given vector map. a vector polygon from the current region extent.
v.mkgridCreates a vector map of a user-defined grid.
v.overlayOverlays two vector maps offering clip, intersection, difference, symmetrical difference, union operators.
v.parallelCreates parallel line to input vector lines.
v.patchCreates a new vector map by combining other vector maps.
v.perturbRandom location perturbations of vector points.
v.reportReports geometry statistics for vector maps.
v.segmentCreates points/segments from input vector lines and positions.
v.selectSelects features from vector map (A) by features from other vector map (B).
v.splitSplits vector lines to shorter segments. transformation of 2D vector features to 3D. vector polygons or points to lines. points along input lines in new vector map with 2 layers.
v.typeChanges type of vector features.
v.voronoiCreates a Voronoi diagram constrained to the extents of the current region from an input vector map containing points or centroids.

See also the corresponding keyword geometry for additional references.

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