

   crossprod {base}                             R Documentation

   MMaattrriixx CCrroosssspprroodduucctt

   DDeessccrriippttiioonn::

        Given matrices `x' and `y' as arguments, `crossprod'
        returns their matrix cross-product.  This is formally
        equivalent to, but faster than, the call `t(x) %*% y'.

   UUssaaggee::

        crossprod(x, y=x)

   SSeeee AAllssoo::

        `outer', matmult.

   EExxaammpplleess::

        crossprod(1:4)# = sum(1 + 2^2 + 3^2 + 4^2)
        drop(.Last.value) # scalarized

