error using contour function

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Steve Birks
Steve Birks 2012-1-27
I am currently getting an error using the contour function. My code is [c,h] = contour(u,[0 0],'r'); where u is a matrix 512 by 512. The code runs fine on my friends computer. I have reinstalled MATLAB but the error is still there. Please help!
??? Error using ==> contours
Too many input arguments.
Error in ==> specgraph.contourgroup.refresh at 180
[this.contourmatrix,msg] = contours(x,y,z,levels);
Error in ==> specgraph.contourgroup.schema>LdoDirtyAction at 265
refresh(h);
Warning: Error occurred while evaluating listener callback.
> In contour at 88
In geodesics at 27

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回答（2 个）

Wayne King
Wayne King 2012-1-27
It looks like you are actually calling an undocumented function from the Signal Processing Toolbox, contours()
u = randn(512,512);
[c,h] = contour(u,[0 0],'r');
should work.
Are you sure you don't have a typo in your code where you are actually calling contours?
  2 个评论
Steve Birks
Steve Birks 2012-1-27
If I run your code:
>> u = randn(512,512);
[c,h] = contour(u,[0 0],'r');
??? Error using ==> contours
Too many input arguments.
Error in ==> specgraph.contourgroup.refresh at 180
[this.contourmatrix,msg] = contours(x,y,z,levels);
Error in ==> specgraph.contourgroup.schema>LdoDirtyAction at 265
refresh(h);
Warning: Error occurred while evaluating listener callback.
> In contour at 88

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Carlos G-M
Carlos G-M 2013-1-20
I have the same problem Steve, any solution? Thanks

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