[Rd] question

[Erich Neuwirth]

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?



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Erich Neuwirth, Computer Supported Didactics Working Group
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