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**Graphical** **index** **of** **GRASS** **GIS** **modules**

Go to vector introduction | topicsVectormodules:· v.buffer Creates a buffer around vector features of given type. · v.build.all Rebuilds topology on all vector maps in the current mapset. · v.build Creates topology for vector map. · v.build.polylines Builds polylines from lines or boundaries. · v.category Attaches, deletes or reports vector categories to map geometry. · v.centroids Adds missing centroids to closed boundaries. · v.class Classifies attribute data, e.g. for thematic mapping · v.clean Toolset for cleaning topology of vector map. · v.clip Extracts features of input map which overlay features of clip map. · v.cluster Performs cluster identification. · v.colors Creates/modifies the color table associated with a vector map. · v.colors.out Exports the color table associated with a vector map. · v.db.addcolumn Adds one or more columns to the attribute table connected to a given vector map. · v.db.addtable Creates and connects a new attribute table to a given layer of an existing vector map. · v.db.connect Prints/sets DB connection for a vector map to attribute table. · v.db.dropcolumn Drops a column from the attribute table connected to a given vector map. · v.db.droprow Removes a vector feature from a vector map through attribute selection. · v.db.droptable Removes existing attribute table of a vector map. · v.db.join Joins a database table to a vector map table. · v.db.reconnect.all Reconnects attribute tables for all vector maps from the current mapset to a new database. · v.db.renamecolumn Renames a column in the attribute table connected to a given vector map. · v.db.select Prints vector map attributes. · v.db.univar Calculates univariate statistics on selected table column for a GRASS vector map. · v.db.update Updates a column in the attribute table connected to a vector map. · v.decimate Decimates a point cloud · v.delaunay Creates a Delaunay triangulation from an input vector map containing points or centroids. · v.dissolve Dissolves boundaries between adjacent areas sharing a common category number or attribute. · v.distance Finds the nearest element in vector map ’to’ for elements in vector map ’from’. · 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.external Creates a new pseudo-vector map as a link to an OGR-supported layer or a PostGIS feature table. · v.external.out Defines vector output format. · v.extract Selects vector features from an existing vector map and creates a new vector map containing only the selected features. · v.extrude Extrudes flat vector features to 3D vector features with defined height. · v.generalize Performs vector based generalization. · v.hull Produces a 2D/3D convex hull for a given vector map. · v.import Imports vector data into a GRASS vector map using OGR library and reprojects on the fly. · v.in.ascii Creates a vector map from an ASCII points file or ASCII vector file. · v.in.db Creates new vector (points) map from database table containing coordinates. · v.in.dxf Converts file in DXF format to GRASS vector map. · v.in.e00 Imports E00 file into a vector map. · v.in.geonames Imports geonames.org country files into a vector points map. · v.in.lidar Converts LAS LiDAR point clouds to a GRASS vector map with libLAS. · v.in.lines Imports ASCII x,y[,z] coordinates as a series of lines. · v.in.mapgen Imports Mapgen or Matlab-ASCII vector maps into GRASS. · v.in.ogr Imports vector data into a GRASS vector map using OGR library. · v.in.pdal Converts LAS LiDAR point clouds to a GRASS vector map with PDAL. · v.in.region Creates a vector polygon from the current region extent. · v.in.wfs Imports GetFeature from a WFS server. · v.info Outputs basic information about a vector map. · v.kcv Randomly partition points into test/train sets. · v.kernel Generates a raster density map from vector points map. · v.label Creates paint labels for a vector map from attached attributes. · v.label.sa Create optimally placed labels for vector map(s) · v.lidar.correction Corrects the v.lidar.growing output. It is the last of the three algorithms for LIDAR filtering. · v.lidar.edgedetection Detects the object’s edges from a LIDAR data set. · v.lidar.growing Building contour determination and Region Growing algorithm for determining the building inside · v.lrs.create Creates a linear reference system. · v.lrs.label Creates stationing from input lines, and linear reference system. · v.lrs.segment Creates points/segments from input lines, linear reference system and positions read from stdin or a file. · v.lrs.where Finds line id and real km+offset for given points in vector map using linear reference system. · v.mkgrid Creates a vector map of a user-defined grid. · v.neighbors Neighborhood analysis tool for vector point maps. · v.net.alloc Allocates subnets for nearest centers. · v.net.allpairs Computes the shortest path between all pairs of nodes in the network. · v.net.bridge Computes bridges and articulation points in the network. · v.net.centrality Computes degree, centrality, betweeness, closeness and eigenvector centrality measures in the network. · v.net.components Computes strongly and weakly connected components in the network. · v.net.connectivity Computes vertex connectivity between two sets of nodes in the network. · v.net.distance Computes shortest distance via the network between the given sets of features. · v.net.flow Computes the maximum flow between two sets of nodes in the network. · v.net Performs network maintenance. · v.net.iso Splits subnets for nearest centers by cost isolines. · v.net.path Finds shortest path on vector network. · v.net.salesman Creates a cycle connecting given nodes (Traveling salesman problem). · v.net.spanningtree Computes minimum spanning tree for the network. · v.net.steiner Creates Steiner tree for the network and given terminals. · v.net.timetable Finds shortest path using timetables. · v.net.visibility Performs visibility graph construction. · v.normal Tests for normality for vector points. · v.out.ascii Exports a vector map to a GRASS ASCII vector representation. · v.out.dxf Exports vector map to DXF file format. · v.out.lidar Exports vector points as LAS point cloud · v.out.ogr Exports a vector map layer to any of the supported OGR vector formats. · v.out.postgis Exports a vector map layer to PostGIS feature table. · v.out.pov Converts GRASS x,y,z points to POV-Ray x,z,y format. · v.out.svg Exports a vector map to SVG file. · v.out.vtk Converts a vector map to VTK ASCII output. · v.outlier Removes outliers from vector point data. · v.overlay Overlays two vector maps offering clip, intersection, difference, symmetrical difference, union operators. · v.pack Exports a vector map as GRASS GIS specific archive file · 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.profile Vector map profiling tool · v.proj Re-projects a vector map from one location to the current location. · v.qcount Indices for quadrat counts of vector point lists. · v.random Generates random 2D/3D vector points. · v.rast.stats Calculates univariate statistics from a raster map based on a vector map and uploads statistics to new attribute columns. · v.reclass Changes vector category values for an existing vector map according to results of SQL queries or a value in attribute table column. · v.rectify Rectifies a vector by computing a coordinate transformation for each object in the vector based on the control points. · v.report Reports geometry statistics for vector maps. · v.sample Samples a raster map at vector point locations. · 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.support Updates vector map metadata. · v.surf.bspline Performs bicubic or bilinear spline interpolation with Tykhonov regularization. · v.surf.idw Provides surface interpolation from vector point data by Inverse Distance Squared Weighting. · v.surf.rst Performs surface interpolation from vector points map by splines. · v.timestamp Modifies a timestamp for a vector map. · v.to.3d Performs transformation of 2D vector features to 3D. · v.to.db Populates attribute values from vector features. · 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.to.rast Converts (rasterize) a vector map into a raster map. · v.to.rast3 Converts a vector map (only points) into a 3D raster map. · v.transform Performs an affine transformation (shift, scale and rotate) on vector map. · v.type Changes type of vector features. · v.univar Calculates univariate statistics of vector map features. · v.unpack Imports a GRASS GIS specific vector archive file (packed with v.pack) as a vector map · v.vect.stats Count points in areas, calculate statistics from point attributes. · v.vol.rst Interpolates point data to a 3D raster map using regularized spline with tension (RST) algorithm. · v.voronoi Creates a Voronoi diagram constrained to the extents of the current region from an input vector map containing points or centroids. · v.what Queries a vector map at given locations. · v.what.rast Uploads raster values at positions of vector points to the table. · v.what.rast3 Uploads 3D raster values at positions of vector points to the table. · v.what.strds Uploads space time raster dataset values at positions of vector points to the table. · v.what.vect Uploads vector values at positions of vector points to the table. 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