Hi all.
I have unexpected reshape results on datasets with certain variable
names. Here a reproducible example:
d <- matrix(seq_len(7*7), 1, 7*7)
vnames <- c('acc','ppeGross','CF','ROA','DeltaSales','invTA','DeltaRevDeltaRec')
varying <- unlist(lapply(vnames, paste, 1:7, sep='.'))
d <- data.frame(d)
names(d) <- varying
d1 <- reshape(d, varying=varying, direction="long")
d[,'ppeGross.2'] == d1[d1$time==2,'ppeGross'] #This is FALSE!
##Try to compare d and d1: values are wrong from the 2nd column
##Changing variable names makes thinks go right:
vnames <- letters[1:7]
varying <- unlist(lapply(vnames, paste, 1:7, sep='.'))
names(d) <- varying
d1 <- reshape(d, varying=varying, direction="long")
d[,'b.2'] == d1[d1$time==2,'b'] #This is TRUE, as expected
##Try to compare d and d1 now: they look right
Any hint on what's wrong here? By now, my workarond is changing
variable names before reshaping, than re-assign old variable names
back after reshape.
Best regards,
Antonio, Fabio Di Narzo.
> R.version
_
platform i686-pc-linux-gnu
arch i686
os linux-gnu
system i686, linux-gnu
status
major 2
minor 6.0
year 2007
month 10
day 03
svn rev 43063
language R
version.string R version 2.6.0 (2007-10-03)
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