[GRASS-dev] Re: [GRASS GIS] #426: v.in.ogr: split long boundaries
GRASS GIS
trac at osgeo.org
Sun Mar 1 09:31:39 EST 2009
#426: v.in.ogr: split long boundaries
--------------------------+-------------------------------------------------
Reporter: neteler | Owner: grass-dev at lists.osgeo.org
Type: enhancement | Status: new
Priority: major | Milestone: 6.5.0
Component: Vector | Version: unspecified
Resolution: | Keywords:
Platform: All | Cpu: All
--------------------------+-------------------------------------------------
Comment (by mmetz):
After lots of testing and debugging with the help of Markus Neteler, I
would like to add boundary splitting in trunk and maybe in devbr6, but
want to ask first about how to implement it:
1) enable boundary splitting by default, disable with new flag. That's my
favorite.
2) enable boundary splitting with new flag, don't split by default.
3) always split boundaries, no option to disable.
4) forget about it, leave v.in.ogr as it is.
If boundary splitting gets added to v.in.ogr, the man page would be
updated with a hint to use v.build.polylines if boundary segments should
be joined again.
With boundary splitting, v.in.ogr is roughly 2x (1.5x - 3x) faster on
shapefiles with areas. That's not as much as I hoped for, but something.
Please vote :-)
Markus M
--
Ticket URL: <http://trac.osgeo.org/grass/ticket/426#comment:6>
GRASS GIS <http://grass.osgeo.org>
More information about the grass-dev
mailing list