[GRASS-user] Dispaly Converted Vector Image

GRASS GRASS user
1

Hi All,
            I convert .tiff image to raster and then
raster file convert to vector through "r.to.Vect" for
three feature as Line,Point,Area.
           But when i try to display these converted
vector file i cant see any thing.
           steps what i done : -
       g.region vect="map name"
       d.mon x0
      d.vect "map name"

What i do for displaying these converted files?
Plz Solve

Hemant S. Moharir

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2

Hi Hemanth,
Probably

  1. U scanned a map
  2. U wish it becomes a grass vector.

GRASS 5 has an auto raster to vector convertion feature. But I personally found it cumbersome.
Since then the evolution to GRASS6.* is not probably evolving
to make Raster to Vector easy.
There are many Free and Open Source products
GOOGLE and U will find.

What Iam personally doing is

  1. Scan the map
  2. Digitise in Qcad (Free and Open Source, installable on GNU-Linux)
  3. Save as a DXF file
  4. Import to GRASS
  5. Build topology

Ravi Kumar
hemant moharir courtly516@yahoo.com wrote:

Hi All,
I convert .tiff image to raster and then
raster file convert to vector through “r.to.Vect” for
three feature as Line,Point,Area.
But when i try to display these converted
vector file i cant see any thing.
steps what i done : -
g.region vect=“map name”
d.mon x0
d.vect “map name”

What i do for displaying these converted files?
Plz Solve

Hemant S. Moharir

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http://mail.yahoo.com

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