MATLAB: How to zero pad a matrix

zero padding

hi,
my input matrix "x" is a 3X1 matrix.
and i'm using it in the formula
r=x^t (t is some value)
but it is asking for a square matrix or a scalar value.
so, how to convert that 3X1 matrix to 3X3 square matrix by padding zeroes.
please suggest, thanks in advance

Best Answer

More than likely you're actually looking for the "dot" operator .^ to return the element-wise values of the vector x I'd venture...but, if you really are intent on turning into an array, simply
[x zeros(length(x),length(x)-1)]^t
is the generic expression (but I still don't think that's what you intend/want).
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