Once again I need to tap into the collective knowledge here.
Let's say I have the following columns and data below
Y X1 X2 X3 X4
I would like to generate additional new columns and column names
(ie the data would be squared - and I'd like the column names to
reflect this) like:
Y X1 X2 X3 X4 X1^2 X2^2 X3^2 X4^2
I believe I can compute the values correctly with the code below, but
I am unable to generate the column names. (This is a short example, in
reality I have many more columns and more complicated names)
for(i in 2:5)
{
name=get(paste(names(simpleData)[i],"^2", sep=""))
simpleData<- transform(simpleData, name=(simpleData[,i]^2))
}
print(simpleData)
Any suggestions/hints .. I've searched the FAQ and web (this is how I
came across the get() function) but no luck so far.
Thanks,
Esmail
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