Hi there, I have a contour plot which I successfully generated. However when I turn on the quiver lines, they do not show up on the plot. Below is my code:
[x,y] = meshgrid([1:0.1:6],[1:0.1:6]); %Creates axis.
f = 8.9875517873681764*10^9; PC1 = 1e-6; %Charge of point one.
PC2 = 1e-6; %Charge of point two.
PC3 = 0.5e-6; %Charge of point three.
n = 20; %N-number of levels.
%Charge of individual points.
Charge1 = (f.*PC1)./sqrt((x-3).^2+(y-3).^2); Charge2 = (f.*PC2)./sqrt((x-5).^2+(y-3).^2); Charge3 = (f.*PC3)./sqrt((x-4).^2+(y-4).^2); Sum = Charge1-Charge2+Charge3; figure(1) [px,py]=gradient(Sum); contour(x,y,Sum,n) hold on quiver(x,y,px,py) hold off
Does anyone have an idea why the quiver lines are not showing? Thanks.
Best Answer