I really like this kind of thing, especially for debugging, but for such visualizations simple is better (if I wanted something fancier I'd use a GUI). I use n

I really like this kind of thing, especially for debugging, but for such visualizations simple is better (if I wanted something fancier I'd use a GUI). I use now hipsterplot, since it is much simpler and tweakable, but I wonder if heatmaps will be possible with this tool, since it uses color it could be