Try readGDAL in the rgdal package - best to use the GeoTIFF version of
Etopo1 though - the GDAL functions are optimized for binary versions
of large rasters like this, and with arguments to readGDAL you can
read sub-windows or decimated versions.
Cheers, Mike.
On Tue, Aug 3, 2010 at 5:33 AM, R He
Hello,
The other day Justin Peter presented a mini program to plot a topographic map
with an overlay of the worldHires. I seemed interesting so I checked the ETOPO5
site and find that there is a new file ETOPO1 with a 1 minute grid. I
downloaded it and tried a similar procedure. Now the ETOPO1.g
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