Malcolm McLean

J G. Yes. Just pass in a dimension of one pixel for the y axis, and it ought to provide you with a data density plot. You'll have to stretch the image to see it.

Cris: that's sort of true. You can't create information out of nowhere. However if I have a curve specified by several points, and the curve represents the true underlying data, I can improve the representation of the data by taking more points.

If you look at Fransisco's images, he's clearly improved the definition of the teeth. Unless he's cheating, the image quality has been improved.

Duh. Rank beginner's error. Of course the file must be opened with "wb".
The problem is that on some platforms it makes no difference. Where it does, you'll only see errors when writing line feeds. So that's as why I couldn't replicate your bug.
I've uploaded a fix.
I'll address ypur other points later.

Functional, but a bit slow. I wrote a similar function using hist3 to perform the density calculation, runs a million samples in less than a second.

Great tool, but maybe it should flip the y-axis so the results aren't upside down. Also, Matlab stays frozen in a busy state as long as the result figure is open. Need to close the figure before I can do anything else.