Matrix Crossproduct

Usage

crossprod(x, y=x)

Description

Given matrices x and y as arguments, t returns their matrix cross-product. This is formally equivalent to, but faster than, the call t(x) %*% y.

See Also

outer

Examples

crossprod(1:4)# = sum(1 + 2^2 + 3^2 + 4^2)


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