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Contourf matrix plot contour

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Mehdi
Mehdi 2013-9-30
评论： Walter Roberson 2013-10-4
I have written a code to graph contours of a matrix in 2D. However, although i have values of MY2 <10, when it is plotted there is a white area for MY2<10. Would you please help me with this. I have checked this several times and it seems to be alright!
All required files have been attached in a ZIP file.
Files can be downloaded from the following link
https://www.dropbox.com/s/bt4jwola0mgmtno/Export.Grid.zip
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Walter Roberson
Walter Roberson 2013-9-30
Your zip files did not appear to get attached.
Please show the contourf() call you use.

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回答（2 个）

Walter Roberson
Walter Roberson 2013-10-1
The call
[C,M]=contourf(MX2,MY2,MR2,10);
requests that 10 contour levels be used, not a single contour level at value 10. To use a single contour level at value 10, code
[C, M] = contourf(MX2, MY2, MR2, [10 10]);
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Mehdi
Mehdi 2013-10-1
编辑：Mehdi 2013-10-1
Thanks i will try your suggestion now. But I meant to have the contour values of MR2, MV2 and MU2 when MY2=10 or less. Currently the region with MY2<10 has no contour of MR2, MV2 or MU2 and is solid white.

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Mehdi
Mehdi 2013-10-4
Any help is highly appreciated
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Walter Roberson
Walter Roberson 2013-10-4
Why not use logical indexing to find the cut-plane for MY2 being 10, and applying that logical index to MX2, MY2, MR2, and contourf() the result ?

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