Re: Show two vector fields with different arrow colors

• To: mathgroup at smc.vnet.net
• Subject: [mg57135] Re: [mg57119] Show two vector fields with different arrow colors
• From: "David Park" <djmp at earthlink.net>
• Date: Tue, 17 May 2005 01:19:58 -0400 (EDT)
• Sender: owner-wri-mathgroup at wolfram.com

```With DrawGraphics it's easy.

Needs["DrawGraphics`DrawingMaster`"]

Draw2D[
{Red, DrawVectorField[{y, -x}, {x, 0, 1}, {y, 0, 1}],
Green, DrawVectorField[{x, y}, {x, 0, 1}, {y, 0, 1}]},
AspectRatio -> Automatic,
Background -> Linen,
ImageSize -> 450];

David Park

From: Niels L. Ellegaard [mailto:gnalle at ruc.dk]
To: mathgroup at smc.vnet.net

Dear Masters

I would like to plot two vector fields in the same graph. However I
need the arrows of the two fields to have different colors. Is there a
sneaky way to do this? I tried the following, but in the third plot
all arrows become red.

p1 :=  PlotVectorField[{y,-x},{x,0,1},{y,0,1}, DefaultColor -> RGBColor[1,
0, 0]];
p2 :=  PlotVectorField[{x,y},{x,0,1},{y,0,1}, DefaultColor -> RGBColor[0, 1,
0]] ;
Show[p1,p2]

Niels

PS: I am using a slightly old version, so I cannot apply PlotVectorField to
a list

In[53]:= \$Version

Out[53]= Silicon Graphics 3.0 (September 16, 1997)

```

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