What is 3D? I see it in a lot of these posts, but I do not see it in any or the examples.
In reply to my question about color in quiver, it was suggested that I try:
quiver(x,y,u,v,color =3D (v>0)*1.) to draw arrows with positive v to the color corresponding to index 1 in the color map, and the arrows with negative v to the color corresponding to 0.
Ms. Carol A. Leger
SRI International Phone: (650) 859-4114
333 Ravenswood Avenue G-273
Menlo Park, CA 94025 e-mail: leger@...392...