How to display a 2-D matrix using surf or mesh?
<p>Let's say I have a matrix <code>A</code>, how can I display it with <code>surf</code> or <code>mesh</code> that X-Y axies are the index of elements(e.g. <code>i,j</code>) and the Z value is the values in <code>A(i,j)</code>?</p>