Help convert vector contour line to surface elevation

[Angus Carr]

There are two things that I have done.

Method 1: If your contours won'd meld together into 1 raster cell then 
the command v.to.rast will work wonders for you. I created a 
fine-resolution surface using contours this way.
When I tried a coarser resolution, there were some obvious errors, as in 
a group of pixels that didn't change over a contour line. I thought that 
was odd. It was caused by two vector lines sharing a pixel. It had only 
one value (natutally). I tried 

Method 2: turn the vector lines into sites using v.to.sites (use all 
points: -a) and then generate a surface using s.surf.idw. This is a 
resolution-independant approach, and produces results similar to 
r.surf.contour, at least on my maps.

Good Luck!

Angus.

On Fri, 19 Jan 1996, mohdnaka wrote:

> Dear Grassusers
> 
> I have a set of vector contour lines that I would like to convert to raster
>  surface elevation. If r.contour can create a vector contour file from 
> raster elevation data, is there any command that I can use that will create
> raster elevation data from vector contour lines.
> 
> Any suggestions or help are welcome.
> 
> Cheers,
> 
> Kamarul
>