Hi R,
I have a matrix x with repeating row names.
> dim(x)
[1] 862 19
zz<-matrix(0,4,4)
rownames(zz)=c("a","a","b","b")
data.frame(zz) (?)
I need to use x in a linear regression
lm(as.formula(paste("final_dat[,5]~",paste(colnames(x),collapse="+"))),x
)
this gives me a error
Error in model.frame.default(formula =
as.formula(paste("final_dat[,5]~", :
'data' must be a data.frame, not a matrix or an array
> sessionInfo()
R version 2.7.1 (2008-06-23)
i386-pc-mingw32
locale:
LC_COLLATE=English_United States.1252;LC_CTYPE=English_United
States.1252;LC_MONETARY=English_United
States.1252;LC_NUMERIC=C;LC_TIME=English_United States.1252
attached base packages:
[1] stats graphics grDevices utils datasets methods base
other attached packages:
[1] xlsReadWrite_1.3.2
Thanks in advance
Ravi
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