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NAMEv.build - Creates topology for vector map.Optionally also checks for topological errors. KEYWORDSvector, topology, geometrySYNOPSISv.buildv.build --help v.build [-e] map=name [error=name] option=string[,string,...] [--overwrite] [--help] [--verbose] [--quiet] [--ui] Flags:
Parameters:
DESCRIPTIONv.build builds support files for GRASS vector maps. These support files supply topology and category information including spatial index that are needed by other GRASS modules.GRASS is generating these support files automatically, only in rare cases the user has to (re)build them. Refer to vector data processing in GRASS GIS for more information on GRASS vector data model. NOTESv.build creates support files only for vector maps located in the user’s current mapset. It’s not possible to rebuild support files (option=build) for vector maps from other mapsets.In case of errors, the user can optionally generate an error vector map containing the erroneous vectors for later inspection. If error vector map is specified, v.build checks:
Extensive checks for topological errors (flag -e) also includes:
EXAMPLESBuild topologyNote that option=build recreates also spatial and category indices, not only topology. For linked OGR layers (see v.external) also feature index is created.v.build map=urbanarea option=buildNote that the vector map urbanarea must be located in the current mapset. Dump topology or indicesDump options print topology, spatial, category or feature index to standard output. Such information can be printed also for vector maps from other mapsets. A description of the vector topology is available in the GRASS GIS 7 Programmer’s Manual, section "Vector library topology management".v.build map=urbanarea option=dump SEE ALSOv.build.all, v.build.polylines, v.edit, v.splitSee also wxGUI vector digitizer. AUTHORSDave Gerdes, U.S.Army Construction Engineering Research Laboratory,Michael Higgins, U.S.Army Construction Engineering Research Laboratory, Radim Blazek, ITC-irst, Trento, Italy SOURCE CODEAvailable at: v.build source code (history)Main index | Vector index | Topics index | Keywords index | Graphical index | Full index © 2003-2021 GRASS Development Team, GRASS GIS 7.8.6 Reference Manual
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