Using pgfplots, I'm trying to create a quiver plot on a hyperboloid surface something like this. I was able to generate the hyperboloid surface using parametric equations. I could'nt find out how ...
How can I plot 3d graphs of functions defined implicitly (quadratic forms, for Linear Algebra course notes -- I'd like to include lots of examples)? As far as I can see it is not possible with ...
I need to provide a duotone pdf (say black and cyan). My figures are made with tikz, pgfplots and asymptote (3D but no prc), some with opacity effects. I compile with pdftex and luatex. What do I ...