I have 3-D data (x,y,z), about a 1,000 scatter points. Is there any
way to make a true density plot in Excel without buying an expensive
add-in? Searching this newsgroup, I found a reference to a post and
some vba code at http://andypope.info/charts/spectrum.htm that is
close. Are any other resources, like an MS add-in, that will accomplish
this task?

Thanks - Canopus56