Pages du manuel Linux : Commandes destinées aux utilisateurs / grass

prints/sets DB connection for a vector map
Print vector attributes
Create a Delaunay triangulation from an input vector of points or centroids.
Find the nearest element in vector 'to' for elements in vector 'from'. Various information about this relation may be uploaded to the attribute table of input vector 'from' or printed to stdout.
Create a new vector as a read-only link to OGR layer. Available drivers: ESRI Shapefile,UK .NTF,SDTS,TIGER,S57,MapInfo File,DGN,VRT,AVCBin,REC,Memory,CSV,GML,ODBC,PostgreSQL
Selects vector objects from an existing vector map and creates a new map containing only the selected objects. If 'list', 'file' and 'where' options are not specified, all features of given type and layer are extracted, categories are not changed in that case.
Uses a GRASS vector points map to produce a convex hull vector map
Convert GRASS ascii file or points file to binary vector.
Create new vector (points) from database table containing coordinates.
Import of E00 file into a vector map.
Upload Waypoints, Routes, and Tracks from a Garmin GPS receiver into a vector map.
Convert OGR vectors to GRASS. Available drivers: ESRI Shapefile,UK .NTF,SDTS,TIGER,S57,MapInfo File,DGN,VRT,AVCBin,REC,Memory,CSV,GML,ODBC,PostgreSQL
Create a new vector from current region.
Converts a GRASS site_lists file into a vector file.
Outputs basic information about a user-specified vector map layer.
Randomly partition points into test/train sets.
Generates a raster density map from vector points data using a moving 2D isotropic Gaussian kernel or optionally generates a vector density map on vector network with a 1D kernel
Create paint labels for GRASS vector file and attached attributes.
Creates a (binary) GRASS vector map of a user-defined grid.
Makes each cell value a function of the attribute values assigned to the vector points or centroids around it, and stores new cell values in an output raster map layer.
Network maintenance.
Allocate subnets for nearest centres (direction from centre). Centre node must be opened (costs >= 0). Costs of centre node are used in calculation
Split net to bands between cost isolines (direction from centre). Centre node must be opened (costs >= 0). Costs of centre node are used in calculation
Find shortest path on vector network. Reads start/end pointsfrom standard input in 2 possible formats: id start_point_category end_point_category id start_point_x start_point_y end_point_x end_point_y Points specified by category must be exactly on network nodes.
Create a cycle connecting given nodes (Traveling salesman problem). Note that TSP is NP-hard, heuristic algorithm is used by this module and created cycle may be sub optimal.
Create Steiner tree for the network and given terminals. Note that 'Minimum Steiner Tree' problem is NP-hard and heuristic algorithm is used in this module so the the result may be sub optimal.
tests for normality for points.
Convert a GRASS binary vector map to a GRASS ASCII vector map
Exports GRASS vector files to DXF file format.
Convert to OGR format.
Convert to POV-Ray format, GRASS x,y,z -> POV-Ray x,z,y
Overlay 2 vector maps.
Creates a new binary vector map layer by combining other binary vector map layers.
Random location perturbations of GRASS sites.
Allows projection conversion of vector files.
indices for quadrat counts of sites lists
Randomly generate a GRASS vector points map.
Changes vector category values for an existing vector map according to results of SQL queries or a value in attribute table column.
Sample a raster file at site locations.
Create points/segments from input lines, and positions read from stdin in format: P [] L [] Segment is created for the first found line of that category only.
Select features from ainput by features from binput.
Surface interpolation from sites data by Inverse Distance Squared Weighting.
Interpolation and topographic analysis from given point or contour data in vector format to GRASS floating point raster format using regularized spline with tension.
Load values from vector to database. In uploaded/printed category values '-1' is used for 'no category' and 'null'/'-' if category cannot be found or multiple categories were found.
Create points along input lines.
Converts a binary GRASS vector map layer into a GRASS raster map layer.
Transforms an vector map layer from one coordinate system into another coordinate system.
Change the type of geometry elements.
Calculates univariate statistics for attribute. Variance and standard deviation is calculated only for points.