[GRASSLIST:2431] r.poly - linear features

[javier garcia - CEBAS]

Hi all;

I've got a set of basins created with r.watershed and the corresponding 
streams raster map. And I would like to know if it is possible to convert 
these two maps into GRASS vector files.

I've seen that the basins can be converted and treated with v.digit to 
correct the errors (the direct result is not very clean), but I can't find 
the way to transform the streams to linear features; the resulting file 
always appears as areas around the borders of the lines of stream cells.

Thanks for your advise.

Best wishes,

Javier.