Visualizing Sparsity Pattern of matrices

Hi all,

Structure plots provide a quick visual check on the sparsity pattern of the matrix.
A structure plot is a rectangular array of dots;
a dot is black if the corresponding matrix element is nonzero otherwise it is white.

Is it possible to generate such plots with scipy or should we switch over to matplotlib ?

Nils

Reference:
http://math.nist.gov/MatrixMarket/structureplots.html