replace NaN values with numericl values

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lina 2014-4-3

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评论： charles Chamcha 2023-3-18

Hi all,

i have a NaN values in the matrix those i can not importing a numerical values in it the undefined variable error is appear

the question is what should i do to import the numerical matrix into NaN matrix ?

Thanks in advance.

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Azzi Abdelmalek 2014-4-3

How your text file looks like?

lina 2014-4-3

nc files those for marine physics not all of variables are apear

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Azzi Abdelmalek 2014-4-3

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If you want to replace the nan values by 0 for example

A(isnan(A))=0

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madhusmita sahu 2020-5-4

thank you so much sir

charles Chamcha 2023-3-18

thanks

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BAPPA MUKHERJEE 2019-12-6

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How can I replace some values with NAN form a time sries.

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carolina franco 2020-1-28

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Hi,

Another simple way to understand what's going on .

For me, it works well in R2014a. You only need to enter the matrix with NaN values without specifying the columns where NaN values are.

Here NaN values are replaced by 0s but you can easily modify it in the 8th line of this code:

%Input
m_data=C{1,1}; % Matrix with NaN values
%Code
        s1=size(m_data,1);
        for i= 1: s1
            msubs=m_data(i,1:end); % Save existing data in ith row of m_data
            msubs=msubs(isnan(m_data(i,1:end))==0); %Substitute matrix/ taking only non-NaN values
            m_data(i,1:end)=0; %Erase all existing values in ith row of m_data and REPLACE by 0s
            m_data(i,1:size(msubs,2))=msubs; %Substitute values without NaN
        end