[GRASSLIST:7122] wish list

[RAVI KUMAR]

Hi all,
wish
GRASS can import DXF with inscribed text in polygons becoming its attributes.
It will save a lot of bother.. Details in mails below.
Thanking the untiring programming team in anticipation
Ravi
 
 
On Thu, Jun 09, 2005 at 10:33:26PM -0700, RAVI KUMAR wrote:
> 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 at 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 primitives: 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 wrote:
> > 
> > > Hi Ravi,
> > > 
> > > could you send (offlist) a small DXF sample file to
> > > me?
> > > Then I can check for the attributes in v.in.dwg.
> > > 
> > > Markus
> > > 
> > > On Wed, Jun 08, 2005 at 04:56:51AM -0700, RAVI KUMAR
> > > wrote:
> > > > Hi All,
> > > > recently we completed a Geological digital dataset
> > > in
> > > > ARC-INFO.
> > > > The steps in short are
> > > > 
> > > > 1. SCAN the map into and image
> > > > 2. Draw polygons of various geological units with
> > > the
> > > > image of the map in the background (using Autocad)
> > > > 3. The polygons of individual units have an
> > > inscribed
> > > > text indicating the geology and save as a DXF file
> > > > 4. Import the resultant DXF file into ARC-INFO.
> > > > 5. ARC-INFO automaticall takes the inscribed text
> > > in
> > > > each polygon as an attribute for that polygon.
> > > > 
> > > > Using DXF import software GRASS is able to get all
> > > the
> > > > vectors, but IF THE INSCRIBED TEXT OF EACH POLYGON
> > > > BECOMES AN ATTRIBUTE then it will be far simpler
> > > to
> > > > make a GRASS dataset.
> > > > 
> > > > WHY USE AUTOCAD AND WHY NOT DO THE ENTIRE THING IN
> > > > GRASS??
> > > > 
> > > > FOSS software 'Qcad', can be used instead of
> > > AUTOCAD,
> > > > and the CAD Draftsmen with limited knowledge can
> > > make
> > > > the vector of a geological map after scanning,
> > > with
> > > > inscribed text in each geological unit represented
> > > as
> > > > a polygon.
> > > > 
> > > > If GRASS then can import the resultant DXF file
> > > from
> > > > Qcad, and make the inscribed text as its
> > > attribute, it
> > > > can speedup the process of making digital
> > > datasets.
> > > > 
> > > > Hope the GRASS program builders can give a
> > > solution,
> > > > like this.
> > > > 
> > > > Thanking in anticipation
> > > > Ravi 


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