[R-sig-Geo] read ascii problem floating point

Robert Hijmans r.hijmans at gmail.com
Fri Jan 21 17:54:47 CET 2011

> I have tried to read an ascii file using “readAsciiGrid” {maptools} in R 
> 2.12.0. The z values are incorrect, and I strongly suppose that the 
> problem is due to floating point. 


If would helpful if you said what is incorrect about the z values. You could
try this alternative route:

r = raster('filename.asc')

# if you want an sp object:
x = as(r, 'SpatialGridDataFrame')

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