Re: [R-sig-Geo] 1. Re: default value for cutoff in gstat variogram()

2006-06-06 Thread Edzer J. Pebesma
john lewis wrote: > Hello all, > I did a comparison of gstat, geoR and SPlus 6.1 about 2 years ago with the > coal ash data and found little difference among them after a bit of time > making sure all input parameters were the same. I don't know if I can find > those results but maybe it is time

[R-sig-Geo] selection of data subsets in spatial classes

2006-06-06 Thread karl . sommer
Hello list I have been trying to figure out if it is possible to select a subset of data in a SpatialGridDataFrame without prior conversion to a data.frame using the method as.data.frame(). I have imported an ESRI " *. bil " file containing different spectral bands using rgdal. The file imported

[R-sig-Geo] 1. Re: default value for cutoff in gstat variogram()

2006-06-06 Thread john lewis
Hello all, I did a comparison of gstat, geoR and SPlus 6.1 about 2 years ago with the coal ash data and found little difference among them after a bit of time making sure all input parameters were the same. I don't know if I can find those results but maybe it is time for me to do it again? Chee