You're looking for "heatmap". You should read the docs if you want to learn more.
On Wednesday, October 26, 2016, Paul B. <beres...@gmail.com> wrote: > Tim: Thank you, that works great. > > Josef: I can plot 2D matrices with GR (which is what I want) but your > code example doesn't work. GR looks pretty impressive, I'll have to check > it out. A bit disappointed there's no interface to zoom in/out with the > mouse and for some reason the window won't close. > > Tom: Works for images but not readily clear how to plot something like > rand(100,100) as a bitmap instead of a 100 lines. Do I have to convert it > to an image structure for plot to figure out that it's a bitmap? > > Thanks, all! >