[R-sig-Geo] trouble coercing SpatialPixelsDataFrame into SpatialGridDataFrame?

[ElenaC]

I can't reproduce the problem with the meuse data either, so I've uploaded my
original data:
http://r-sig-geo.2731867.n2.nabble.com/file/n5655660/data_error.RData
data_error.RData 

I get the problem when I do:

library(sp)
load("data_error.RData")
summary(data_pixels)
summary(as(data_pixels,'SpatialGridDataFrame'))


Here is the output from sessionInfo:

> sessionInfo()
R version 2.10.1 (2009-12-14) 
x86_64-apple-darwin9.8.0 

locale:
[1] en_GB.UTF-8/en_GB.UTF-8/C/C/en_GB.UTF-8/en_GB.UTF-8

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base     

other attached packages:
[1] sp_0.9-65

loaded via a namespace (and not attached):
[1] grid_2.10.1    lattice_0.18-3

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