[GRASSLIST:7729] Raster to Vector

GRASS GRASS user
1

Hi All,
Need a good raster to vector software (FOSS) to input for GRASS.
Can anybody please help.
Ravi

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2

Try Inkscape. It has a good autotrace routine.

Michael

On 7/27/05 12:56 AM, “RAVI KUMAR” ravivundavalli@yahoo.com wrote:

Hi All,
Need a good raster to vector software (FOSS) to input for GRASS.
Can anybody please help.
Ravi

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C. Michael Barton, Professor of Anthropology
School of Human Evolution and Social Change
PO Box 872402
Arizona State University
Tempe, AZ 85287-2402
USA

Phone: 480-965-6262
Fax: 480-965-7671
www: <www.public.asu.edu/~cmbarton>

3

On Wed, Jul 27, 2005 at 12:56:01AM -0700, RAVI KUMAR wrote:

Hi All,
Need a good raster to vector software (FOSS) to input for GRASS.
Can anybody please help.
Ravi

There are

* autotrace
  http://autotrace.sourceforge.net/

* potrace: transforms bitmaps into vector graphics
  http://potrace.sourceforge.net/

and maybe more

Markus

4

Potrace is now incoroporated into Inkscape <http://www.inkscape.org/&gt; and
serves as its autotrace module.

Michael

On 7/28/05 1:36 AM, "Markus Neteler" <neteler@itc.it> wrote:

On Wed, Jul 27, 2005 at 12:56:01AM -0700, RAVI KUMAR wrote:

Hi All,
Need a good raster to vector software (FOSS) to input for GRASS.
Can anybody please help.
Ravi

There are

* autotrace
  http://autotrace.sourceforge.net/

* potrace: transforms bitmaps into vector graphics
  http://potrace.sourceforge.net/

and maybe more

Markus

____________________
C. Michael Barton, Professor of Anthropology
School of Human Evolution and Social Change
PO Box 872402
Arizona State University
Tempe, AZ 85287-2402
USA

Phone: 480-965-6262
Fax: 480-965-7671
www: <www.public.asu.edu/~cmbarton>

5

(cc list)

On Thu, Jul 28, 2005 at 12:06:26PM -0400, Dave Sampson wrote:

Can you perform these tasks on a file and maintain the geographic
co-ordinates and projection?

No, I don't think so (these program will operate in XY space).
But you can then simply use the
g.region -g
output to construct a table for v.transform which then performs
a linear transform of the vector output.

Hope this helps

Markus