Hello,
My question sounds simple, but as I am desperatly searchin for a solution I am
asking you all. :)
I try to filter out all non-numeric columns of a data frame using a for loop
to go through all columns. My if clause looks like this:
for(j in 1:length(data)) {
...
if(!is.numeric(data[j])) skip <- "not numeric")
...
}
When I do: is.numeric(data$vol) i get TRUE as result:
unfortunately this is not applicable in a for loop, because i need to go
through all of the columns using j.
I also tried to paste data$ and the name of the column , but this is always a
character.
When I do: is.numeric(data[257]) i get FALSE as result
(257 is the corresponding column index to "vol")
Help needed! Thanks!
Markus
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