I can correct the error. Help me please!!

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Shaila parvin
Shaila parvin 2013-5-9
My code is:
x = linspace(-pi/2,pi/2,40);
y = x;
[X,Y] = meshgrid(x,y);
f = sin(X.ˆ2-Y.ˆ2);
figure(1)
contour(X,Y,f)
figure(2)
contourf(X,Y,f,20)
figure(3)
surf(X,Y,f)
the error is: ??? f = sin(Xˆ2-Yˆ2); |
Error: The input character is not valid in MATLAB statements or expressions.
How can I solve it?

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采纳的回答

John Doe
John Doe 2013-5-9
编辑：John Doe 2013-5-9
This should work:
[X,Y] = meshgrid(x,y);
f = sin(power(X,2)-power(Y,2))
Hope it helps =)
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Shaila parvin
Shaila parvin 2013-5-9
this code outputs 3 images. these 3 images come one after another very quickly. i want to use an "enter" between each two output. i want: when i will run the code- the first image will be appear. when i'll press enter then the 2nd one will be seen. and so. how to do it?
John Doe
John Doe 2013-5-9
编辑：John Doe 2013-5-9
You can use pause.
pause
Insert it in front of each line with figure

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更多回答（1 个）

Wayne King
Wayne King 2013-5-9
编辑：Wayne King 2013-5-9
The problem is the character you have in for "^", not sure where you entered that in from, but copy and paste the below directly into the MATLAB workspace.
x = linspace(-pi/2,pi/2,40);
y = x;
[X,Y] = meshgrid(x,y);
f = sin(X.^2-Y.^2);
figure(1)
contour(X,Y,f)
figure(2)
contourf(X,Y,f,20)
figure(3)
surf(X,Y,f)

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