[R-sig-Geo] Calculate area of raster cells

Paul Hiemstra p.hiemstra at geo.uu.nl
Wed Apr 28 13:07:21 CEST 2010


Tim Erbrecht wrote:
>
> Dear all,
>
>  
>
> having data in a SpatialGridDataFrame with geographic coordinates, is 
> there a simple method to calculate the spatial area for each cell? I 
> wasn't able to find anything in the list archives ...
>
>  
>
> Thanks and best regards
>
> Tim
>
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>
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>   
with the meuse dataset:

library(sp)
data(meuse.grid)
gridded(meuse.grid) = ~x+y
fullgrid(meuse.grid) = TRUE
bla = gridparameters(meuse.grid)
area = bla$cellsize[1] * bla$cellsize[2]
area

cheers,
Paul

-- 
Drs. Paul Hiemstra
Department of Physical Geography
Faculty of Geosciences
University of Utrecht
Heidelberglaan 2
P.O. Box 80.115
3508 TC Utrecht
Phone:  +3130 274 3113 Mon-Tue
Phone:  +3130 253 5773 Wed-Fri
http://intamap.geo.uu.nl/~paul
http://nl.linkedin.com/pub/paul-hiemstra/20/30b/770



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