[GRASSLIST:3380] Re: seeking advice on improving results with s.surf.rst

[Eric G. Miller]

On Mon, Mar 25, 2002 at 12:02:35PM -0500, Neil Ripley wrote:
> Hello all,
> 
> I am attempting to interpolate a continuous surface using s.surf.rst. My 
> source data is a rasterized contour map which I have converted into a GRASS 
> site file using the r.to.sites command.
> 
> The problem I have is that the segment edges are very apparent in the 
> results I am getting from s.surf.rst. I am not getting a smoothly 
> continuous surface as I expect I should. Instead I have clear and distinct 
> breaks that coincide with the segmentation boundaries.
> 
> I have tried running the operation with different segmax values, different 
> tension values, and different smoothness settings in an effort to reduce or 
> eliminate the discontinuities but with little success.
> 
> Has anyone got any advice they would be willing to share on how to go about 
> producing surfaces from contours using s.surf.rst?

Maybe look at some of the other modules that do the same thing:
r.surf.contour, r.surf.idw[2].  Seems r.surf.contour was written for
your particular data source (rasterized contour lines).

-- 
Eric G. Miller <egm2 at jps.net>