Craig writes in answer to Harm's question:
> 
> Ahhhh you must set your cell resolution finer, if two cells fall in the same
> grid cell only the last value will be assigned to that cell and the previous
> value will be lost.  For my meterological sites, I finally had to go to 1
> minute resolutin to get the s.to.rast to work well.  
> 
> What I do is 
> 
> - s.menu option 4 to show duplicate sites.
> - s.menu option 7 to generate a frequency raster
> - r.out.ascii to a file that is accessed by fortran to count up the greater
>   than one occurances.  Multiple values in a cell.
> - correct any problems 
> - s.to.rast at a fine enough resolution
> - r.out.ascii to show the total number of sites a a cross check.  This file
>   can get large so be careful if you have many sites.  I use r.out.ascii -1lgz.
> 
> I realize it is cumbersome and that a program like proprietary-info would do 
> it faster with less trouble but then again its not public domain.  Anyway once
> your sites are rasterized, they should be done once and for all.
> 
> Craig
> 
> 
Maybe this will help a bit: I made a (fairly simple) program to calculate 
the distance to the nearest neighbouring site. Although this would still 
take a lot of time in Harm's case, it has the obvious advantage that it 
can run at night. This minimum distance would of course give you the 
desired resolution. If you want it, just tell me.

Philip Verhagen

-- 


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