I know I should find this in the documentation, but I am
> finding all kinds of bells and whistles about the
> interpolation and the fancy agg features except how to
> disable antialiasing .
When you say antialiasing, do you mean interpolation? AFAIK,
antialiasing doesn't really come into play on the images.
Perhaps what you want is
ax.imshow(nx.mlab.rand(10,10), interpolation='nearest')
JDH