At 12:12 PM 2/3/98 -0200, you wrote:
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for a couple of months).Sorry if this message is being repeated or quite out of date.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#####
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,
Hello.
you could work directly on a dig_ascii file, with the following command
line (usind the sed command on unix:
sed 's/L /A /' Your_dig_ascii_file > the_new_file
this will replace the L<space><space> sequence in your file by a
A<space><space> sequence. Including the spaces will prevent any operations
on the header section of your file. The "A" will indicate that the lines
are part of an area. Note that you need to have an attribute file in the
format:
A coord coord attribute
in order to create the correct topology.
-------------------
dig_ascii (line) file format:
ORGANIZATION: ESRI DLG DATA - CHARACTER
DIGIT DATE: 1988
DIGIT NAME: grass
MAP NAME: Output from Patch.vect
MAP DATE: 1988
MAP SCALE: 24000
OTHER INFO: S. DAKOTA SPEARFISH MODEL
ZONE: 13
WEST EDGE: 589438.87
EAST EDGE: 609544.37
SOUTH EDGE: 4913925.00
NORTH EDGE: 4928110.00
MAP THRESH: 24.00
VERTI:
L 2
4927940.00 598624.75
4927951.00 599374.31
L 4
4927940.00 598624.75
4927937.00 598399.31
4927937.00 598376.12
4927929.00 597850.62
L 2
4927929.00 597850.62
4927929.00 597830.62