## table of contents

topic_geometry(1grass) | GRASS GIS User's Manual | topic_geometry(1grass) |

# Topic: geometry¶

i.image.mosaic | Mosaics several images and extends colormap. | |

r.patch | Creates 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.thin | Thins non-null cells that denote linear features in a raster map layer. | |

v.delaunay | Creates a Delaunay triangulation from an input vector map containing points or centroids. | |

v.drape | Converts 2D vector features to 3D by sampling of elevation raster map. | |

v.edit | Edits a vector map, allows adding, deleting and modifying selected vector features. | |

v.extrude | Extrudes flat vector features to 3D vector features with defined height. | |

v.hull | Produces a 2D/3D convex hull for a given vector map. | |

v.in.region | Creates a vector polygon from the current region extent. | |

v.mkgrid | Creates a vector map of a user-defined grid. | |

v.overlay | Overlays two vector maps offering clip, intersection, difference, symmetrical difference, union operators. | |

v.parallel | Creates parallel line to input vector lines. | |

v.patch | Creates a new vector map by combining other vector maps. | |

v.perturb | Random location perturbations of vector points. | |

v.report | Reports geometry statistics for vector maps. | |

v.segment | Creates points/segments from input vector lines and positions. | |

v.select | Selects features from vector map (A) by features from other vector map (B). | |

v.split | Splits vector lines to shorter segments. | |

v.to.3d | Performs transformation of 2D vector features to 3D. | |

v.to.lines | Converts vector polygons or points to lines. | |

v.to.points | Creates points along input lines in new vector map with 2 layers. | |

v.type | Changes type of vector features. | |

v.voronoi | Creates 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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© 2003-2020 GRASS Development Team, GRASS GIS 7.8.5 Reference Manual

GRASS 7.8.5 |