How can I plot 2D contour and vector field (quiver)??

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Dario Doronzo
Dario Doronzo 2017-5-4
回答： Star Strider 2017-5-4
if true
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endHi all,
I would like to know how it is possibile to plot a 2D contour with a tangential vector field.
In detail I have a given velocity profile V (matrix of n-m dimension) as function of X and Y (n-m dimension) and on this plot I want to have the tangential field (streamline) to the velocity field V.
MATLAB CODE :
clear all close all clc
[X,Y] = meshgrid(0:0.1:1,0:0.1:1); R = sqrt(X.^2 + Y.^2); V = 1+10*exp(-R.^2/(0.5^2));
figure; [Vxc Vxc]=contourf(X,Y,V,20); set(Vxc,'LineStyle','none'); colorbar;
Thank you very much

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回答（1 个）

Star Strider
Star Strider 2017-5-4
To use quiver with contour, see Show Gradient with Quiver Plot (link).
To use streamline functions, see Kelly Kearney’s approach in Finding normals to contours on contour plot (link). Her idea may be closer to what you want.

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