Plot the electric field distribution ?
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how Plot the electric field distribution above the contour ?
% Plot the electric field distribution
figure;
v_now;
[ex,ey]=gradient(v);
quiver(-ex,-ey); %Quiver command creates a plot, E=-grad(V), hence the negative sign
title('potential ')
how put contour in the same figure of electric field distribution?
采纳的回答
Mischa Kim
2014-3-17
编辑：Mischa Kim
2014-3-17
Use hold all before or after the first plot command:
quiver(...) % replace the dots with your data
hold all;
contour(...)
4 个评论
Mary Jon
2014-3-17
Mischa Kim
2014-3-17
编辑：Mischa Kim
2014-3-17
Mary, use the scale parameter:
scale = 2; % double length of vectors
quiver(-ex,-ey,scale)
Mary Jon
2014-3-17
Mary Jon
2014-3-27
更多回答（1 个）
Antonio Cedillo Hernandez
2020-4-21
0 个投票
Here you have the full MATLAB code explained (in spanish but the first comment is the code): https://www.youtube.com/watch?v=k9srU6aQfL0
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