title: how to create heat map from irregular xyz data in pyplot?
body: <p>I have a bunch of <code>xz</code> data sets, I want to create a heat map using these files where the <code>y</code> axis is the parameter that changes between the data sets. The problem is that the <code>x</code> values in each of these data sets is different. Furthermore, the differences between the <code>x</code> values in each of these data sets is not fixed (e.g. <code>x[100] - x[99] =/= x[200]-x[199]</code>). I know I can interpolate the data, generate a grid, and then use <code>imshow</code> to display the data, the question is if there is a more straight forward solution?</p>