Hi
during trend calculation I recive following error:
R
library(spgrass6)
library(gstat)
raster=readRAST6("rzedna")
p=readVECT6("punkty")
p...@proj4string=raster@proj4string
pg_1=gstat(id="p_1", formula=rzedna~1,data=p, degree=1)
p_1=predict(pg_1,raster)
[ordinary or weighted least squares prediction]
"solve.c", line 87: singular matrix in function Usolve()
Error in predict.gstat(pg_1, raster) : Usolve
my system information:
Ubuntu 8.04
R 2.8.1
gstat 0.9.59
the error have appeared first time on gstat 0.9.49
Errors apears on all my data, even these, where trend was calculated
some times ago. Commads coming from old data
The error is also reproducible on spearfish dataset with elevation.dem
and random points generated by v.random
Jarek
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