Quiver Transparency and Shape

Hi.

I'm using quivers (with the quiver3 function) to show the stresses in a beam. I want to change the transparency of the quiver, but the alpha function apparently isn't compatible (this was in the warning after trying it). Is there another way of achieving this?

This is less important, but I was also wondering if there was a way of changing the shape of the arrow head to be conical instead of two lines so it appears the same regardless of orientation.

Thanks!

Answer 1

[darova]

use patch to manipulate edgeAlpha

cla
t = linspace(0,2*pi,30);
[x,y] = pol2cart(t,1);
patch(x,y,t,'edgealpha',0.5,...
    'facecolor','none',...
    'edgecolor','flat')