I have query in graph plotting.
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I have the below function. I need to find the surface plot
z1 = -4:0.002:4;
a11 = -4:0.002:4;
G = atan(((0.03 + a11)./z1)) + atan((0.05 - a11)./z1);
G1 = atan(((0.03 + a11)./z1));
G2 = atan((0.05 - a11)./z1);
G = G1 + G2
%If I find the surface plot of each G1 and G2, I get the following


But when I am plotiing for G, I get the below surface plot. Is it correct?

4 个评论
Amy Topaz
2022-4-14
KALYAN ACHARJYA
2022-4-14
@Amy Topaz Have you provided the detail requirements, like G1 & G2?
Rik
2022-5-24
I recovered the removed content from the Google cache (something which anyone can do). Editing away your question is very rude. Someone spent time reading your question, understanding your issue, figuring out the solution, and writing an answer. Now you repay that kindness by ensuring that the next person with a similar question can't benefit from this answer.
回答(2 个)
Try using meshgrid
z1 = -4:0.1:4;
a11 = -4:0.1:4;
[z1,a11] = meshgrid(z1,a11);
G = atan(((0.03 + a11)./z1)) + atan((0.05 - a11)./z1);
G1 = atan(((0.03 + a11)./z1));
G2 = atan((0.05 - a11)./z1);
G = G1 + G2;
surf(z1,a11,G1)
surf(z1,a11,G2)
surf(z1,a11,G)
G = @(a11,z1) atan(((0.03 + a11)./z1)) + atan((0.05 - a11)./z1);
G1 = @(a11,z1) atan(((0.03 + a11)./z1));
G2 = @(a11,z1) atan((0.05 - a11)./z1);
G = @(a11,z1) G1(a11,z1) + G2(a11,z1);
figure
fsurf(G, [-1 1 -1 1]*4)
colormap(turbo)
colorbar
.
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