1vector_graphical(1) Grass User's Manual vector_graphical(1)
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14 Go to vector introduction | topics
15 Vector modules:
17 · v.buffer Creates a buffer around vector features of given type.
18 · v.build.all Rebuilds topology on all vector maps in the current
20 mapset.
21 · v.build Creates topology for vector map.
23 · v.build.polylines Builds polylines from lines or boundaries.
26 · v.category Attaches, deletes or reports vector categories to
28 map geometry.
29 · v.centroids Adds missing centroids to closed boundaries.
31 · v.class Classifies attribute data, e.g. for thematic mapping
33 · v.clean Toolset for cleaning topology of vector map.
35 · v.clip Extracts features of input map which overlay features of
37 clip map.
38 · v.cluster Performs cluster identification.
40 · v.colors Creates/modifies the color table associated with a
42 vector map.
43 · v.colors.out Exports the color table associated with a vector
45 map.
46 · v.db.addcolumn Adds one or more columns to the attribute table
48 connected to a given vector map.
49 · v.db.addtable Creates and connects a new attribute table to a
51 given layer of an existing vector map.
52 · v.db.connect Prints/sets DB connection for a vector map to
54 attribute table.
55 · v.db.dropcolumn Drops a column from the attribute table con‐
57 nected to a given vector map.
58 · v.db.droprow Removes a vector feature from a vector map through
60 attribute selection.
61 · v.db.droptable Removes existing attribute table of a vector
63 map.
64 · v.db.join Joins a database table to a vector map table.
66 · v.db.reconnect.all Reconnects attribute tables for all vector
68 maps from the current mapset to a new database.
69 · v.db.renamecolumn Renames a column in the attribute table con‐
71 nected to a given vector map.
72 · v.db.select Prints vector map attributes.
74 · v.db.univar Calculates univariate statistics on selected table
76 column for a GRASS vector map.
77 · v.db.update Updates a column in the attribute table connected
79 to a vector map.
80 · v.decimate Decimates a point cloud
82 · v.delaunay Creates a Delaunay triangulation from an input vec‐
85 tor map containing points or centroids.
86 · v.dissolve Dissolves boundaries between adjacent areas sharing
88 a common category number or attribute.
89 · v.distance Finds the nearest element in vector map ’to’ for
91 elements in vector map ’from’.
92 · v.drape Converts 2D vector features to 3D by sampling of eleva‐
94 tion raster map.
95 · v.edit Edits a vector map, allows adding, deleting and modify‐
97 ing selected vector features.
98 · v.external Creates a new pseudo-vector map as a link to an
100 OGR-supported layer or a PostGIS feature table.
101 · v.external.out Defines vector output format.
103 · v.extract Selects vector features from an existing vector map
105 and creates a new vector map containing only the selected fea‐
106 tures.
107 · v.extrude Extrudes flat vector features to 3D vector features
109 with defined height.
110 · v.generalize Performs vector based generalization.
113 · v.hull Produces a 2D/3D convex hull for a given vector map.
115 · v.import Imports vector data into a GRASS vector map using OGR
117 library and reprojects on the fly.
118 · v.in.ascii Creates a vector map from an ASCII points file or
120 ASCII vector file.
121 · v.in.db Creates new vector (points) map from database table
123 containing coordinates.
124 · v.in.dxf Converts file in DXF format to GRASS vector map.
126 · v.in.e00 Imports E00 file into a vector map.
128 · v.in.geonames Imports geonames.org country files into a vector
130 points map.
131 · v.in.lidar Converts LAS LiDAR point clouds to a GRASS vector
133 map with libLAS.
134 · v.in.lines Imports ASCII x,y[,z] coordinates as a series of
136 lines.
137 · v.in.mapgen Imports Mapgen or Matlab-ASCII vector maps into
139 GRASS.
140 · v.in.ogr Imports vector data into a GRASS vector map using OGR
142 library.
143 · v.in.region Creates a vector polygon from the current region
145 extent.
146 · v.in.wfs Imports GetFeature from a WFS server.
148 · v.info Outputs basic information about a vector map.
150 · v.kcv Randomly partition points into test/train sets.
152 · v.kernel Generates a raster density map from vector points map.
154 · v.label Creates paint labels for a vector map from attached
157 attributes.
158 · v.label.sa Create optimally placed labels for vector map(s)
160 · v.lidar.correction Corrects the v.lidar.growing output. It is
162 the last of the three algorithms for LIDAR filtering.
163 · v.lidar.edgedetection Detects the object’s edges from a LIDAR
165 data set.
166 · v.lidar.growing Building contour determination and Region Grow‐
168 ing algorithm for determining the building inside
169 · v.lrs.create Creates a linear reference system.
171 · v.lrs.label Creates stationing from input lines, and linear
173 reference system.
174 · v.lrs.segment Creates points/segments from input lines, linear
176 reference system and positions read from stdin or a file.
177 · v.lrs.where Finds line id and real km+offset for given points
179 in vector map using linear reference system.
180 · v.mkgrid Creates a vector map of a user-defined grid.
182 · v.neighbors Neighborhood analysis tool for vector point maps.
184 · v.net.alloc Allocates subnets for nearest centers.
187 · v.net.allpairs Computes the shortest path between all pairs of
190 nodes in the network.
191 · v.net.bridge Computes bridges and articulation points in the
193 network.
194 · v.net.centrality Computes degree, centrality, betweeness,
196 closeness and eigenvector centrality measures in the network.
197 · v.net.components Computes strongly and weakly connected compo‐
199 nents in the network.
200 · v.net.connectivity Computes vertex connectivity between two
202 sets of nodes in the network.
203 · v.net.distance Computes shortest distance via the network
205 between the given sets of features.
206 · v.net.flow Computes the maximum flow between two sets of nodes
209 in the network.
210 · v.net Performs network maintenance.
212 · v.net.iso Splits subnets for nearest centers by cost isolines.
214 · v.net.path Finds shortest path on vector network.
217 · v.net.salesman Creates a cycle connecting given nodes (Travel‐
219 ing salesman problem).
220 · v.net.spanningtree Computes minimum spanning tree for the net‐
223 work.
224 · v.net.steiner Creates Steiner tree for the network and given
226 terminals.
227 · v.net.timetable Finds shortest path using timetables.
230 · v.net.visibility Performs visibility graph construction.
232 · v.normal Tests for normality for vector points.
234 · v.out.ascii Exports a vector map to a GRASS ASCII vector repre‐
236 sentation.
237 · v.out.dxf Exports vector map to DXF file format.
240 · v.out.lidar Exports vector points as LAS point cloud
242 · v.out.ogr Exports a vector map layer to any of the supported
245 OGR vector formats.
246 · v.out.postgis Exports a vector map layer to PostGIS feature ta‐
249 ble.
250 · v.out.pov Converts GRASS x,y,z points to POV-Ray x,z,y format.
252 · v.out.svg Exports a vector map to SVG file.
254 · v.out.vtk Converts a vector map to VTK ASCII output.
256 · v.outlier Removes outliers from vector point data.
258 · v.overlay Overlays two vector maps offering clip, intersection,
260 difference, symmetrical difference, union operators.
261 · v.pack Exports a vector map as GRASS GIS specific archive file
263 · v.parallel Creates parallel line to input vector lines.
265 · v.patch Creates a new vector map by combining other vector
267 maps.
268 · v.perturb Random location perturbations of vector points.
270 · v.profile Vector map profiling tool
272 · v.proj Re-projects a vector map from one location to the cur‐
274 rent location.
275 · v.qcount Indices for quadrat counts of vector point lists.
277 · v.random Generates random 2D/3D vector points.
279 · v.rast.stats Calculates univariate statistics from a raster map
281 based on a vector map and uploads statistics to new attribute
282 columns.
283 · v.reclass Changes vector category values for an existing vector
285 map according to results of SQL queries or a value in attribute
286 table column.
287 · v.rectify Rectifies a vector by computing a coordinate trans‐
289 formation for each object in the vector based on the control
290 points.
291 · v.report Reports geometry statistics for vector maps.
293 · v.sample Samples a raster map at vector point locations.
295 · v.segment Creates points/segments from input vector lines and
297 positions.
298 · v.select Selects features from vector map (A) by features from
300 other vector map (B).
301 · v.split Splits vector lines to shorter segments.
303 · v.support Updates vector map metadata.
305 · v.surf.bspline Performs bicubic or bilinear spline interpola‐
307 tion with Tykhonov regularization.
308 · v.surf.idw Provides surface interpolation from vector point
310 data by Inverse Distance Squared Weighting.
311 · v.surf.rst Performs surface interpolation from vector points
313 map by splines.
314 · v.timestamp Modifies a timestamp for a vector map.
317 · v.to.3d Performs transformation of 2D vector features to 3D.
320 · v.to.db Populates attribute values from vector features.
322 · v.to.lines Converts vector polygons or points to lines.
324 · v.to.points Creates points along input lines in new vector map
326 with 2 layers.
327 · v.to.rast Converts (rasterize) a vector map into a raster map.
329 · v.to.rast3 Converts a vector map (only points) into a 3D raster
331 map.
332 · v.transform Performs an affine transformation (shift, scale and
334 rotate) on vector map.
335 · v.type Changes type of vector features.
337 · v.univar Calculates univariate statistics of vector map fea‐
339 tures.
340 · v.unpack Imports a GRASS GIS specific vector archive file
343 (packed with v.pack) as a vector map
344 · v.vect.stats Count points in areas, calculate statistics from
346 point attributes.
347 · v.vol.rst Interpolates point data to a 3D raster map using reg‐
349 ularized spline with tension (RST) algorithm.
350 · v.voronoi Creates a Voronoi diagram constrained to the extents
352 of the current region from an input vector map containing
353 points or centroids.
354 · v.what Queries a vector map at given locations.
356 · v.what.rast Uploads raster values at positions of vector points
358 to the table.
359 · v.what.rast3 Uploads 3D raster values at positions of vector
361 points to the table.
362 · v.what.strds Uploads space time raster dataset values at posi‐
364 tions of vector points to the table.
365 · v.what.vect Uploads vector values at positions of vector points
367 to the table.
368 Main index | Topics index | Keywords index | Graphical index | Full
370 index
371 © 2003-2019 GRASS Development Team, GRASS GIS 7.4.4 Reference Manual
373GRASS 7.4.4 vector_graphical(1)