Importing large GADM vector data

From GRASS-Wiki
Revision as of 12:46, 11 February 2013 by ⚠️Madi (talk | contribs)
Jump to navigation Jump to search

Q: How do I import very large data in GRASS? I.e. from GADM <br\> A: In contrast to GADM v1, GADM v2 contains a lot of floating point representation errors in the coordinates, most probably created by the software used to create GADM v2. You need to perform additional cleaning with snapping to a very small threshold, i.e.

v.in.ogr snap=1e-7

And you should use GRASS 7 for the import of large vector data, because the import may not work with GRASS 6.