
Re: VectorColorFunction
Posted:
Jan 21, 2012 5:13 AM


Hi,
maybe I misunderstood you, but the parameters which you can use in a VectorColorFunction are {x,y,fx,fy,norm}. Just use fx and fy to calculate your angle and make a color from it:
VectorPlot[{x, y}, {x, 3, 3}, {y, 3, 3}, VectorColorFunction > Function[{x, y, fx, fy, norm}, ColorData["BrightBands"][ Mod[ArcTan[fx, fy], 2*Pi]/(2*Pi)]], VectorColorFunctionScaling > False]
Cheers Patrick
On Fri, 20120120 at 01:55 0500, Peter Rodenbach wrote: > Hi experts, > > I want to plot via ListVectorPlot a Field of Vectors. I obtained the > vectors from a physics experiment. The Norm of all vectors is very > similar, and what is important is its direction! > > Therefore, what I want to do now is: give each vector a color with a > different direction a different color, e.g., up to 0.5degree red, 0.5 > to 1 degree yellow, etc. > > The Problem: The norm of each vector is used as argument for the > function that determines the color, according to the help > > "With the setting VectorColorFunction>func, the arguments supplied to > func are as follows" ,...., x,y,Subscript[v, x],Subscript[v, > y],Norm[{Subscript[v, x],Subscript[v, y]}]" > > Does anyone have an idea for a workaround? > > Thanks > > Peter >

