[Gdal-dev] Vectorizing rasters

[Guillaume HUBY]

> -----Message d'origine-----
> De : gdal-dev-bounces at lists.maptools.org 
> [mailto:gdal-dev-bounces at lists.maptools.org] De la part de 
> a.francos at cgsondeos.com
> Envoyé : vendredi 28 avril 2006 09:17
> À : gdal-dev at lists.maptools.org
> Objet : [Gdal-dev] Vectorizing rasters
> 
> 
> Hi there
> 
> I am just looking for tools (or algorithms that I might 
> implement) in order to vectorize rasters (e.g. convert to 
> polygons -SHP?- the discrete features included in an, let's 
> say, ASCII raster map).
> 
> Up to now the only ways to do so require the use of 
> commercial packages.
> 
> Thank you so much. Cheers
> 
> Antonio.

Hi,

I'm not sure but gdal_contour (http://www.gdal.org/gdal_contour.html) might
bring you an answer. Since it compute vector contour of rasters, just
imagine each discrete value of pixel is a different elevation.

A+,
Guillaume.