[GRASS-user] how to convert google or any other bmp/jpeg/geotiff maps into shape format

GRASS GRASS user
1

Dear All,
I am trying to convert Google maps like bmp, jpg, GeoTiff into shape format.
If you have any idea please let me know.

thanking you in advance,

Regards
Jeevan
--
View this message in context: http://www.nabble.com/how-to-convert-google-or-any-other-bmp-jpeg-geotiff-maps-into-shape-format-tp20766705p20766705.html
Sent from the Grass - Users mailing list archive at Nabble.com.

2

On 01/12/08 07:24, Alpha GRASS wrote:

Dear All,
I am trying to convert Google maps like bmp, jpg, GeoTiff into shape format.
If you have any idea please let me know.

The formats you listed are raster formats, whereas shape is a vector format. So, you cannot simply "convert", but you can vectorize the elements in the raster map.

In GRASS this would mean the following steps:

- import the raster with r.in.gdal,
- use (if lines: r.thin &) r.to.vect to transform to vector
- v.out.ogr to export to shape.

Moritz