is possible withdraw valour with problems of an matrix?

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Carlos Batista
Carlos Batista 2014-7-17
回答： Image Analyst 2014-7-17
Hi users Matlab!!!
I have a doubt about the matrices (...)
I'd like to know if is possible withdraw valour with problems of an matrix (...)
For exemplo: I identified that an value of my matrix located from point [data(3,1) that have value of 9292983940] (...) This value is an erro and I can not use NaN for this value (...)
Is possible withdraw, only this value of my matrix. How I do?
Thanks! Carlos

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回答（2 个）

Azzi Abdelmalek
Azzi Abdelmalek 2014-7-17
编辑：Azzi Abdelmalek 2014-7-17
If you have a vactor
A=[1 2 100 15]
You can delete the third element by
A(A==100)=[]
But if you have a matrix
A=[1 2;100 5]
A(A==100)=[]
The result will be a vector
Image Analyst
Image Analyst 2014-7-17
Matrices must remain rectangular. If you have a bad value, you can identify the locations
badValue = 9292983940; % Whatever
badValueLocations = theMatrix == badValue;
But you can't just remove them since the matrix must remain rectangular. However you can set them to some other value such as 0 or nan;
theMatrix(badValueLocations) = 0; % or nan or whatever.

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