Hi, I've been trying to teach my students how to use units in Maple calculations, and have figured out how to get around certain things like integration, etc. I don't think, however that you can pass say a vector that has units attached through a plotting routine in Maple. For example if an array M = [[1[[atm]], 4[[L]]], [0.1[[atm]], 0.35[[L]]]] is plotted with something like display([pointplot(M, color = red)]) Error, (in pointplot) incorrect first argument If I define the array w/o the units (using this method), there isn't an issue. There is more than one way to skin a cat in Maple, so maybe there is a way to do this that I don't know?