[R-sig-Geo] rgdal: problem with grid data

[Michael Sumner]

What are you expecting to get - a point for every raster cell?  If so,
use gridded(isrlc) <- FALSE to convert to a SPDF first - then the
write will work.

More complicated conversions are possible, such as with
as.SpatialPolygons.GridTopology.

Cheers, Mike.





On Tue, Mar 23, 2010 at 5:32 PM, Agustin Lobo <alobolistas at gmail.com> wrote:
> Hi!
>
>  I read a grid file into R with
> isrlc <-
> readGDAL("/media/Transcend/MASTER_ICTA2007_2008/GEODATA_miniprojs/Kefah/ISR_cov/isr_cov.gri")
>
> While isrlc seems correct,  I'm getting an empty shapefile when I attempt to
> write:
>
> writeOGR(isrlc,dsn="/media/Transcend/MASTER_ICTA2007_2008/GEODATA_miniprojs/Kefah",
> layer="ISR_cov2",driver="ESRI Shapefile")
>
> Data from
> http://www.diva-gis.org/data/cov/ISR_cov.zip
>
> Thanks
>
> Agus
>
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