Thanks for the clarification. This is good to know. Any other options besides r.surf.contour?
Michael On 7/31/07 3:25 PM, "Maciej Sieczka" <[EMAIL PROTECTED]> wrote: > Michael Barton wrote: >> GRASS has 2 routines specially designed to interpolate raster maps from >> contours. > > ... > >> 2. Use v.surf.rst: More sophisticated and complicated module, but will read >> your vector contours directly. Check the manual for details. > > v.surf.rst is not designed for elevation contours lines input. It > *might* work well with contours, but in general it prefers homogenous > points input, like LIDAR or SRTM. In case of elavation contour lines, > which have irregular distribution by nature, RST produces curvature > artifacts. Also, as v.surf.rst uses segmentation to preserve memory, > any clustered input tends to lead to "stairy" artifacts at segments' > joins. Both side effects are possible to minimise bu adjusting tension, > smoothing and other parameters, but success is not guaranteed. > > Maciek __________________________________________ Michael Barton, Professor of Anthropology Director of Graduate Studies School of Human Evolution & Social Change Center for Social Dynamics and Complexity Arizona State University phone: 480-965-6213 fax: 480-965-7671 www: http://www.public.asu.edu/~cmbarton _______________________________________________ grassuser mailing list [email protected] http://grass.itc.it/mailman/listinfo/grassuser
