contrast matrix in R

Question

[786]

Please find out the error in this command....

groups = paste(pData(phenoData(gse21340dat[[1]]))$characteristics_ch1.1,pData(phenoData(gse2134 0dat[[1]]))$characteristics_ch1.2, sep=".")

when I run it i got this error

Error: unexpected numeric constant in "groups = paste(pData(phenoData(gse21340dat[[1]]))$characteristics_ch1.1,pData(phenoData(gse2134 0"

[Devon Ryan]

I would imagine it's either the random .1 or the space in gse2134 0.

[786]

thanx alot it actually removed the error there was space thank u so much

[venu]

There might be some unexpected space in the data, in this case some where values are not separated by '.'