Problem with function

Hello,

There's nothing wrong with having 'thisCol' and 'thatCol' already defined or
not.
The problem is that your function does NOT return a value. Get rid of the
assignment and it will work.


CompFunct <- function(thisCol, thatCol) {cbind(finalTable[, thisCol],
finalTable[, thatCol])}


I would also include a data.frame argument,

CompFunct2 <- function(x, thisCol, thatCol) {cbind(x[, thisCol], x[,
thatCol])}
CompFunct2(finalTable, 2, 3)

(But the function is so simple that maybe it's purpose is to save some
keystrokes.)


Hope this helps,

Rui Barradas

acnunn wrote

Hi,

I'm new to R, so apologies in advance for the triviality of this question,
but I was wondering if anyone could tell me why this function doesn't
return the expected output, i.e. a matrix containing two columns from a
large data frame called 'finalTable'? Oddly, the statement between the
curly brackets works if run with 'thisCol' and 'thatCol' already defined.
Any help would be much appreciated.



Here's what 'finalTable' looks like, if it helps:-



Many thanks, Adam

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