replace NaN values with numericl values

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.

[Azzi Abdelmalek]

Do what?

[lina]

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

[Azzi Abdelmalek]

How your text file looks like?

[lina]

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

Answer 1

[Azzi Abdelmalek]

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

A(isnan(A))=0

[lina]

it works with me but i still have undefined variables

[Abdul Haleem Butt]

what to do if we want to replace nan values by some numeric values i have patient ids like this HC01MI and i want to give some random numeric values to these ids

[Javaid Iqbal]

Thanks a lot sir for helping

[madhusmita sahu]

thank you so much sir

[charles Chamcha]

thanks

Answer 2

[BAPPA MUKHERJEE]

Hi

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

Answer 3

[carolina franco]

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