Hello,
I'm reposting this message because I got some major problems with my
mail server and my Linux box (and I have lot of messages not delivered
for a couple of months).
Sorry if this message is being repeated or quite out of date.
Adalberto
#####Original Message#####
Shawn Francis wrote:
GRASS is kind of funny in that it handles LINES and AREA EDGES
separately. LINES are for the representation of linear features while AREA
EDGES, as the name suggests, are used to form polygon boundaries. To get
your DXF lines into polygons, you will have to "toggle line type" in the
EDIT menu of v.digit. Then you will be able to create a polygon. This can
also be done by text editing the vector ascii file, but for such a small
file the v.digit option is probably faster. Hope this helps.Shawn Francis,
Forest Ecologist and GIS AnalystApplied Ecosystem Management
100-114 Galena Road
Whitehorse, Yukon Y1A 2W6
tel/fax (867) 393-3793
aem@yknet.yk.ca
It works, Shawn!
But, as you said, this applies only for this kind of very small job.
So, I'll ask you in advance.
In a couple of days I'll put a large geologic map on top of my digital
terrain model. And this is not a matter of a half-dozen pretty good
rectangles.
My primary source is Autocad drawings and I may get a huge dxf file with
as many
as we can realise polygons with very strange forms...
How can I edit the vector ascii file in order to convince Grass that my
former Autocad areas are real & good closed areas that I can attach a
label?
Many thanks,
--
Adalberto da Silva
Instituto Astronomico e Geofisico - USP
Sao Paulo - Brasil
adalbert@iag.usp.br