What is the equivalent of column.prods() from S in R?

On Nov 9, 2009, at 8:43 PM, Peng Yu wrote:

Chambers' book Statistical Models in S mentioned 'column.prods()'. But
I don't find it in R. I'm wondering if there is an equivalent in R?

??rowProds
??colProds

(They are in both fUtilities and timeSeries.)

Are you sure that colProds() is equivalent to column.prods()? It seems
that column.prods() should be a very basic function in S, but I have
to load a package in order to call colProds().

I don't see how to construct a matrix give terms as mentioned in the
book. Would you please give me some examples?