plotting arrows with different colors and varying head size
H?ctor Villalobos wrote:
Dear list, I would like to plot arrows with different colors according to arrow length, and also (if possible) with head size proportional to arrow length. The idea is to make a quiver-like plot of matlab with wind speed data. So far, I?ve been able to use different colors, but I need to find a more efficient way to recode arrow length intervals into colors. On the contrary, I can't define different head sizes, because the "length" argument in the "arrows()" function seems to control the head size of all the arrows at once.
Hi Hector, The color.scale function in the plotrix package may do what you want, also have a look at the vectorField function. I think you will have to draw the arrows one at a time or rewrite the arrows function to get different head sizes. Jim