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vp9
2001 Dec 07
2
question
...at> writes:
>
> > 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"])/a...