Hi,
I need to multiply all columns in a matrix so something like
apply(x,2,sum), but using multiplication should do.
I have tried apply(x,2,*)
I know this must be trivial, but I get:
Error in FUN(newX[, i], ...) : invalid unary operator
The help for apply states that unary operators must be
Try:
apply(x, 2, prod)
--
Henrique Dallazuanna
Curitiba-Paraná-Brasil
25° 25' 40 S 49° 16' 22
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On 07/05/07, Jose Quesada [EMAIL PROTECTED] wrote:
Hi,
I need to
see
?prod
b
On May 7, 2007, at 2:25 PM, Jose Quesada wrote:
Hi,
I need to multiply all columns in a matrix so something like
apply(x,2,sum), but using multiplication should do.
I have tried apply(x,2,*)
I know this must be trivial, but I get:
Error in FUN(newX[, i], ...) : invalid unary
Jose Quesada said the following on 5/7/2007 11:25 AM:
Hi,
I need to multiply all columns in a matrix so something like
apply(x,2,sum), but using multiplication should do.
I have tried apply(x,2,*)
I know this must be trivial, but I get:
Error in FUN(newX[, i], ...) : invalid unary
