[R-sig-Geo] Convert a Matrix into a SpatialGridDataFrame

[Rainer M Krug]

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On 13/03/12 11:42, jjcabrera20 wrote:
> Hello everybody there!! Maybe a silly question but for doing some manipulation on values of a 
> SpatialGridDataFrame I transformed it into a matrix like this *Matrix<-
> as.matrix(SpatialGridDataFrame)* now I want to go back and turn the matrix again into
> SpatialGridDataFrame, but I can't find the way. The matrix is still the same (number of rows
> and columns, grid size, projection) as the original.

Try the following:
# sgdf: SpatialGridDataFrame with one layer

mtr <- as.matrix(sgdf)

# do something with mtr

sgdf at data[[2]] <- as.vector(mtr)

then

the second layer in sgdf is your matrix

Cheers,

Rainer

> 
> Thanks
> 
> Jorge
> 
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>
> 
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> 
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- -- 
Rainer M. Krug, PhD (Conservation Ecology, SUN), MSc (Conservation Biology, UCT), Dipl. Phys.
(Germany)

Centre of Excellence for Invasion Biology
Stellenbosch University
South Africa

Tel :       +33 - (0)9 53 10 27 44
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