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help with contour plot
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Trying to plot.
The equation is:
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/288527/image.png)
A tip in polar coordinates:
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/288528/image.png)
And my code:
(The picture above is how it is supposed to look9
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/288529/image.png)
1 comentario
Walter Roberson
el 29 de Abr. de 2020
Note that volunteers are seldom interested in typing in code from pictures of code. Make it easier for the volunteers by providing actual code.
Respuestas (1)
Walter Roberson
el 29 de Abr. de 2020
Your line with == computes whether each element of Z happens to have a particular and exact relationship to X and Y. Once it has done that computation of whether there is a match or not, your code then throws away that computation, having wasted time but otherwise not having done anything useful.
I would suggest to you,
Z2 = X.^2 + Y.^2 + 1;
surf(X, Y, Z2)
4 comentarios
Walter Roberson
el 29 de Abr. de 2020
surf() one thing. "hold on". surf() another thing that is mirror in Z.
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