[GRASSLIST:7106] Re: DXF to Grass dataset

GRASS GRASS user
1

Hi,
the import of DXF is not a problem and we have been doing it.
It is a WISH THAT

  1. If the TEXT inside a polygon automatically becomes it’s attribute after import into GRASS!!\
    It would save a lot of time.
    May be the developers of GRASS may kindly consider this aspect… in the next GRASS CVS release…
    Ravi
    Markus Neteler neteler@itc.it wrote:

I have tested the map with GRASS 6 (not knowing the
coordinate system):

v.in.dwg Geology.dxf out=geologydxf
MTEXT entity not supported
MTEXT entity not supported
MTEXT entity not supported
MTEXT entity not supported
MTEXT entity not supported
MTEXT entity not supported
MTEXT entity not supported
MTEXT entity not supported
MTEXT entity not supported
MTEXT entity not supported
MTEXT entity not supported
MTEXT entity not supported
MTEXT entity not supported
MTEXT entity not supported
MTEXT entity not supported
MTEXT entity not supported
MTEXT entity not supported
3555 elements processed
Building topology …
3538 primitives registered
Building areas: 100%
0 areas built
0 isles built
Attaching islands:
Attaching centroids: 100%
Topology was built.
Number of nodes : 2581
Number of primiti! ves: 3538
Number of points : 16
Number of lines : 3522
Number of boundaries: 0
Number of centroids : 0
Number of areas : 0
Number of isles : 0

The database contains now:
v.db.select geologydxf
cat|entity_nam|color|weight|layer|block|txt
1|POINT|256|-1|TICS||
2|POINT|256|-1|TICS||
3|POINT|256|-1|TICS||
4|POINT|256|-1|TICS||
5|POINT|256|-1|TICS||
6|POINT|256|-1|TICS||
7|POINT|256|-1|TICS||
8|POINT|256|-1|TICS||
9|POINT|256|-1|TICS||
10|POINT|256|-1|TICS||
11|POINT|256|-1|TICS||
12|POINT|256|-1|TICS||
13|POINT|256|-1|TICS||
14|POINT|256|-1|TICS||
15|POINT|256|-1|TICS||
16|POINT|256|-1|TICS||
17|LINE|256|-1|GELI236||
18|LINE|256|-1|GELI236||
19|LINE|256|-1|GELI236||
20|LINE|256|-1|GELI236||
21|LINE|256|-1|GELI236||
22|LINE|256|-1|GELI236||
23|LINE|256|-1|GELI236||
24|LINE|256|-1|GELI236||
…
3536|LINE|256|-1|GELI236||
3537|LINE|256|-1|GELI236||
3538|LINE|256|-1|GELI236||

I don’t know if this is what you expected but to some extent
you can import the DXF file.

Regards

Markus Neteler

On Thu, Jun 09, 2005 at 05:57:04AM -0700, RAVI KUMAR wrote! :

Hi,
Iam attaching a small 1:50000 scale geological map,
which is scanned and vectorised manually by a
draftsman.

When this is imported into ARC-INFO, the inscribed
text in each Geological polygon becomes its attribute.

This is a very quick method,

  1. where all the digitization is done by the not so
    computer savvy draftsmen
  2. Then the Geologist imports it into ARC-INFO to
    convert into a digital data with a vital link
    attribute.
  3. The geologist then attaches an external database
    table using this link attribute.

If U can make such a thing possible in grass, then we
can use OGLed Qcad on linux, for the draftsmen and
GRASS for the Geologists.
Ravi

— Markus Neteler

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