error using interp1 !!

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Hello! I wanted to interpolate the NaN values within a matrix , and it works perfectly but I wanted also to interpolate the Inf entries so I have used the following line:

MyMatrix(isinf(MyMatrix))=NaN;

but then I get the following error :

    Index exceeds matrix dimensions.
    Error in interp1 (line 128)
        extptids = Xq < X(1) | Xq > X(end);

could you give me any hints to what is causing this error and how can I interpolate the Inf entries without any errors . thank you ! Best regards!

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Rik 2017-10-31

Can you post a minimal working example, so we can try to reproduce this error?

Ano 2017-10-31

编辑：Ano 2017-10-31

在 MATLAB Online 中打开

MyMatrix.mat

thank you for your replies! Here is the code I am using and the matrix subject of this error.

    [rowN, colN]=size(MyMatrix);
    colInd      = 1: colN;%COLUMNS INDICES
    IndnNAN     = ~isnan(MyMatrix);
    for r=1:rowN
 MyMatrix(r,:)=interp1(colInd(IndnNAN(r,:)),MyMatrix(r,IndnNAN(r,:)),colInd,'linear');
    end

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Answer 1

M 2017-10-31

编辑：M 2017-10-31

在 MATLAB Online 中打开

0 个投票

Maybe the problem comes from the fact that

colInd(IndnNAN(r,:))
ans =
1×0 empty double row vector

and so is MyMatrix(r,IndnNAN(r,:))

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M 2017-10-31

在 MATLAB Online 中打开

Well, given your definition, either you have :

IndnNAN(r,:)
ans =
1×10 logical array
   1   1   1   1   1   1   1   1   1   1

or

IndnNAN(r,:)
ans =
1×10 logical array
   0   0   0   0   0   0   0   0   0   0

so colInd(IndnNAN(r,:)) will either be equal to 1: colN or it will be empty.

The question is, what did you want to do ?

Ano 2017-10-31

first, I wanted to interpolate the NaN values and the code worked perfectly, then as I have mentioned I wanted to interpolate the consecutive Inf entries as they are taking an important part of the matrix but it is not working , so if I would reformulate my question I would say how can I interpolate consecutive entries of Inf values?!

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error using interp1 !!

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