1vector_graphical(1) GRASS GIS User's Manual vector_graphical(1)
2.img-list { margin: 0; padding: 0; list-style-type: none; } .img-list li {
6padding: 5px; overflow: auto; } .img-list li:hover { background-color: #eee; }
7.img-list li a { color: initial; text-decoration: none; display: block; }
8.img-list li img { width: 10%; float: left; margin: 0 15px 0 0; background:
9white; object-fit: scale-down; } .img-list li img.default-img { max-height:
105ex; } .img-list li .desc { margin: 0px; } .img-list li .name { margin: 5px;
11display: block; color: #409940; font-weight: bold; font-style: italic; }
12
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
28 to/from/of 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 at‐
54 tribute 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 el‐
91 ements 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.lines Imports ASCII x,y[,z] coordinates as a series of
133 lines.
134 • v.in.mapgen Imports Mapgen or Matlab-ASCII vector maps into
136 GRASS.
137 • v.in.ogr Imports vector data into a GRASS vector map using OGR
139 library.
140 • v.in.pdal Converts LAS LiDAR point clouds to a GRASS vector map
142 with PDAL.
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 at‐
157 tributes.
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 be‐
205 tween 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.ogr Exports a vector map layer to any of the supported
242 OGR vector formats.
243 • v.out.postgis Exports a vector map layer to PostGIS feature ta‐
246 ble.
247 • v.out.pov Converts GRASS x,y,z points to POV-Ray x,z,y format.
249 • v.out.svg Exports a vector map to SVG file.
251 • v.out.vtk Converts a vector map to VTK ASCII output.
253 • v.outlier Removes outliers from vector point data.
255 • v.overlay Overlays two vector maps offering clip, intersection,
257 difference, symmetrical difference, union operators.
258 • v.pack Exports a vector map as GRASS GIS specific archive file
260 • v.parallel Creates parallel line to input vector lines.
262 • v.patch Creates a new vector map by combining other vector
264 maps.
265 • v.perturb Random location perturbations of vector points.
267 • v.profile Vector map profiling tool
269 • v.proj Re-projects a vector map from one location to the cur‐
271 rent location.
272 • v.qcount Indices for quadrat counts of vector point lists.
274 • v.random Generates random 2D/3D vector points.
276 • v.rast.stats Calculates univariate statistics from a raster map
278 based on a vector map and uploads statistics to new attribute
279 columns.
280 • v.reclass Changes vector category values for an existing vector
282 map according to results of SQL queries or a value in attribute
283 table column.
284 • v.rectify Rectifies a vector by computing a coordinate trans‐
286 formation for each object in the vector based on the control
287 points.
288 • v.report Reports geometry statistics for vector maps.
290 • v.sample Samples a raster map at vector point locations.
292 • v.segment Creates points/segments from input vector lines and
294 positions.
295 • v.select Selects features from vector map (A) by features from
297 other vector map (B).
298 • v.split Splits vector lines to shorter segments.
300 • v.support Updates vector map metadata.
302 • v.surf.bspline Performs bicubic or bilinear spline interpola‐
304 tion with Tykhonov regularization.
305 • v.surf.idw Provides surface interpolation from vector point
307 data by Inverse Distance Squared Weighting.
308 • v.surf.rst Performs surface interpolation from vector points
310 map by splines.
311 • v.timestamp Modifies a timestamp for a vector map.
314 • v.to.3d Performs transformation of 2D vector features to 3D.
317 • v.to.db Populates attribute values from vector features.
319 • v.to.lines Converts vector polygons or points to lines.
321 • v.to.points Creates points along input lines in new vector map
323 with 2 layers.
324 • v.to.rast Converts (rasterize) a vector map into a raster map.
326 • v.to.rast3 Converts a vector map (only points) into a 3D raster
328 map.
329 • v.transform Performs an affine transformation (shift, scale and
331 rotate) on vector map.
332 • v.type Changes type of vector features.
334 • v.univar Calculates univariate statistics of vector map fea‐
336 tures.
337 • v.unpack Imports a GRASS GIS specific vector archive file
340 (packed with v.pack) as a vector map
341 • v.vect.stats Count points in areas, calculate statistics from
343 point attributes.
344 • v.vol.rst Interpolates point data to a 3D raster map using reg‐
346 ularized spline with tension (RST) algorithm.
347 • v.voronoi Creates a Voronoi diagram constrained to the extents
349 of the current region from an input vector map containing
350 points or centroids.
351 • v.what Queries a vector map at given locations.
353 • v.what.rast Uploads raster values at positions of vector points
355 to the table.
356 • v.what.rast3 Uploads 3D raster values at positions of vector
358 points to the table.
359 • v.what.strds Uploads space time raster dataset values at posi‐
361 tions of vector points to the table.
362 • v.what.vect Uploads vector values at positions of vector points
364 to the table.
365 Main index | Topics index | Keywords index | Graphical index | Full in‐
367 dex
368 © 2003-2023 GRASS Development Team, GRASS GIS 8.2.1 Reference Manual
370GRASS 8.2.1 vector_graphical(1)