converting polygons to raster
Stefan.Neumann at agrar.uni-giessen.de
Stefan.Neumann at agrar.uni-giessen.de
Mon Oct 9 11:06:21 EDT 2000
Hi all,
is there a way to fill polygons with their corresponding attribute? I have a map with soil properties in E00-format, which I imported into grass. The map is displayed and d.what.vect correctly displays one attribute of the polygon.
Now I would like to create a rastermap containing datapoints with the attribute of the surrounding polygon, that is I want to fill each polygon with its attribute-value. I checked the grass-commands, but I could not find any command that does this. v.to.rast returns only the edges of the polygon with an empty interior. I cannot interpolate with r.surf.* because the attribute-values are not related to each other like for example elevation-values. Instead i need the exact attribute-value.
Is there a way to do this? In principle it seems possible because d.what.vect also "knows" the correct value, no matter what point inside a polygon I click.
The second question concerns the ONE attribute displayed. The E00-file contains about 20 attributes for each polygon. Can I
- view these values and can I
- use them for filling polygons and creating a rastermap?
TIA, Stefan
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