I have query in graph plotting.

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Amy Topaz
Amy Topaz 2022-4-14
评论： Rik 2022-5-24
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?
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KALYAN ACHARJYA
KALYAN ACHARJYA 2022-4-14
@Amy Topaz Have you provided the detail requirements, like G1 & G2?
Rik
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.
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回答（2 个）

Davide Masiello
Davide Masiello 2022-4-14
编辑：Davide Masiello 2022-4-14
Ran in:
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)
Star Strider
Star Strider 2022-4-14
Ran in:
Using fsurf —
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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