question about stack command

Michela,

there are options that come fairly close:

What you could do is add columns to a SpatialPixelsDataFrame:

a$colb = b$col
a$colc = c$col

but of course you need to check yourself that this make sense (i.e. the
pixels of a, b and c are identical).

Another way would be working with SpatialGridDataFrame's:

fullgrid(a) = TRUE
fullgrid(b) = TRUE
fullgrid(c) = TRUE

abc = cbind(a,b,c)

which combines layers into one object (similar to what raster::stack
does), and does check for equality of all grid topologies.

Best regards,

Hello everybody,

I have many "SpatialPixelsDataFrame" in my R project and I am wondering
if there is a command like the command "stack" for raster to do the same
with this object class.
Can you help me?
Thank you.
Bye,

Michela

Edzer Pebesma
Institute for Geoinformatics (ifgi), University of M?nster
Weseler Stra?e 253, 48151 M?nster, Germany. Phone: +49 251
8333081, Fax: +49 251 8339763  http://ifgi.uni-muenster.de
http://www.52north.org/geostatistics      e.pebesma at wwu.de