Hi,

I am creating a function and ran into the problem of selecting a column
from a dataset. It seems as though the $ function (as in data$columnname)
does not apply in the function. In simplified version:

This works:
 testf2<-function(data,columnnumber){print(data[,columnnumber])}

But this doesn't:
testf<-function(data,column){print(data$column)}

Even though the first solution works, I would like to be able to insert the
columnname in the function, instead of the columnnumber. How do I do that?

Thank you in advance,

Julia

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