[R-sig-Geo] Slope and Aspect calculations in R

[Thomas Adams]

Josh,

I can not answer your specific question WRT R, but before you embark on 
this, you may consider R with GRASS GIS — they play together pretty 
nicely and the slope and aspect capabilities are part of GRASS.

Regards,
Tom

Josh London wrote:
> Hello
>
> We are looking to mimic, in R, the slope (max magnitude difference 
> between a cell and its neighbors) and aspect (direction of maximum 
> magnitude difference) functions found in ESRI's Spatial Analyst 
> package. We were just about to code up the slope function but thought 
> I would make sure we weren't re-inventing any wheels already out there.
>
> Thanks
> Josh
>


-- 
Thomas E Adams
National Weather Service
Ohio River Forecast Center
1901 South State Route 134
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