WebJun 23, 2012 · For walking a graph you have all the v.net family. To extract the vertices coordinates of lines or polygons (and other columns) one solution is, as always, through v.out.ascii that gives you the xy(z) coordinates(see How one can find the starting and end point of a line in a vector file or how one can connect two line end to end using C code). … WebJan 30, 2024 · 5. I know it's late, but for others who have the same question. Please try this: # limit your computational region to polygon_vector r.mask vect=polygon_vector # clip big_raster to polygon_vector (MASK set by r.mask above) r.mapcalc ex=clipped_raster=big_raster # export r.out.gdal input=big_raster …
Raster data processing in GRASS GIS - GRASS GIS Manual
WebIn this case GRASS vector data are exported to PostGIS database using OGR library, namely using PostgreSQL driver. Contrary to the v.out.ogr module, v.out.postgis is using … WebNote: For exporting GRASS vector data to PostGIS database can be also used v.out.postgis module. This module is not based on OGR library and supports beside … how busy is six flags on sunday
In grass v.drape works with points but not lines
WebOct 11, 2024 · v.in.ascii - Import data from an ASCII file to GRASS vector format. Due to memory overhead vector point imports will be limited to a few million data points unless … WebBy default GRASS GIS topological features are converted into simple features (see OGC Simple Feature Accessspecification for details). Flag -lallows to export vector features as topological elements stored in PostGIS Topologyschema. Note that topological export requires PostGIS version 2 or later. WebTopic: export. d.out.file. Saves the contents of the active display monitor to a graphics file. d.to.rast. Saves the contents of the active display monitor to a raster map. db.out.ogr. Exports attribute tables into various formats. r.external.out. Redirects raster output to file utilizing GDAL library rather than storing in GRASS raster format. how many pairs of spinal nerves in human body