[GRASSLIST:7505] attribute for boundary and arcinfo-coverage

dear grass-friends,

i´ve imported a polygon-shapefile with v.in.ogr. the polygones are different types of biotops with a lot of attributes (coloumns) in the shape-dbf.

i surfed a little bit through the grass 6.0.x-manual pages, but there are still two questions:

is it possible in grass to define the boundary of the polygones between the different types of biotops and to give attributes for the boundaries of the polygones?

for example:
-the boundary between biotop typ 1 and biotop typ 1 should get the attribute A
-the boundary between biotop typ 1 and biotop typ 2 should get the attribute B

is it possible to export grass-vector-layers to arcinfo-coverages and if yes with which precision (single/double)?

with a lot of thanks in advance and greetings from tyrol
helli

is it possible in grass to define the boundary of the polygones
between the different types of biotops and to give attributes for the
boundaries of the polygones?

for example:
-the boundary between biotop typ 1 and biotop typ 1 should get the
attribute A -the boundary between biotop typ 1 and biotop typ 2 should
get the attribute B

Yes,

v.to.db option=sides

is it possible to export grass-vector-layers to arcinfo-coverages and
if yes with which precision (single/double)?

v.out.ogr's default output format is ESRI_Shapefile.

As for exporting .e00 files, try the tools you can find here:

http://avce00.maptools.org
http://www.remotesensing.org/gdal/ogr/

(follow steps of the v.in.e00 script in reverse?)

Hamish

On Sun, Jul 10, 2005 at 04:54:51PM +1200, we recorded a bogon-computron collision of the <hamish_nospam@yahoo.com> flavor, containing:

> is it possible to export grass-vector-layers to arcinfo-coverages and
> if yes with which precision (single/double)?

v.out.ogr's default output format is ESRI_Shapefile.

As for exporting .e00 files, try the tools you can find here:

http://avce00.maptools.org
http://www.remotesensing.org/gdal/ogr/

(follow steps of the v.in.e00 script in reverse?)

OGR can't write arc/info binary coverages, it can only read them. So the
reverse process of v.in.e00 won't work (it converts e00 into avcbin, then uses
v.in.ogr to read that). The tool sets on those two websites don't provide
what would be needed to get Grass to export to an arc/info coverage.

--
Tom Russo KM5VY SAR502 DM64ux http://www.swcp.com/~russo/
Tijeras, NM QRPL#1592 K2#398 SOC#236 AHTB#1
"The only thing you can do easily is be wrong, and that's hardly
  worth the effort." -- Norton Juster