Dear all,
I have encountered a bizarre ocurrence: tapply() does not treat the columns of
data.frame[,cols] in the same way as those of
data.frame[1:length(data.frame),cols]. Whilst for the latter it identifies the
"length" of the column to be length(data.frame) in the former it does not seem
to. I am enclosing the code where this happens. Any clues?
asset.t <- sapply(
# asset[,sapply(asset,is.numeric),drop=T], # returns error "Error in
tapply(x, frame[row, index], FUN = sum, na.rm = TRUE) : arguments must
have same length"
asset[1:length(asset),sapply(asset,is.numeric)],
FUN = apply_cols,
frame = asset,
index = "NAME"
)
# Function definitions
apply_cols <- function(x, frame, row = 1:length(frame), index)
tapply(
x,
frame[row, index],
FUN=sum,
na.rm=TRUE
)
----------
Ivan Alves
Mailto://[EMAIL PROTECTED]
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