When using imagesc to visualize data that contains NaN values, Matlab treats them as the minimum value(in gray it paints them black, jet - blue, etc). the jet colormap doesn't contain neither black nor white. is it possible to display the nan values as black/white?
for example:

```
data = [0 0 0 ; .5 .5 .5 ;1 1 1;nan nan nan];

```

should yield blue-green-red-black strips.

Thanks