Vector library in GRASS 7

​Vector Library from Programmer's Manual

See also Radim Blažek's TODO​.

See also ​GRASS 7 ideas collection (to be merged into trac)

File-based spatial index

Done in r38385 and r39148

Memory consumption

• 3D points: GRASS 7 needs much less memory to build the topology (about 5% of the memory needed in GRASS 6.x).
• Support for Lowmem mode added

Done in r44859, r46901

OGR data provider

GRASS-OGR data provider allows to read and write any vector data format supported by ​OGR library.

For more information see OGR data provider page.

PostGIS data provider

PostGIS data can be accessed using GRASS-OGR data provider or by native GRASS-PostGIS data provider.

Vector Category Index

Use a search tree to keep the category index always sorted and for fast insertion/deletion. This change would considerably improve the scalability when editing large vectors or adding or removing features while maintaining topology. Needs testing if a search tree is considerably faster than e.g. insertion sort.

TODO

3D vector data support

TODO

See also:

• ​http://lists.osgeo.org/pipermail/grass-dev/2009-September/046131.html