[Rd] question
Erich Neuwirth
erich.neuwirth@univie.ac.at
Fri, 07 Dec 2001 19:56:06 +0100
in r 1.3.1,
i read in data into a dataframe and (erroneously) forgot to convert text
into numbers.
the frame was called olddata
then i could to the following calculation:
vp95<-olddata["vp95"]/olddata["wb95"]
"vp95" and "wb95" are column names.
in r 1.4.0, this does not work any more.
i have to do
vp95<-as.real(olddata[,"vp95"])/as.real(olddata[,"wb95"])
is this intended behavior now?
--
Erich Neuwirth, Computer Supported Didactics Working Group
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