removing NaN values from mat file

I have mat file with 6778 x1 variables(signals ) but in some variables NaN value in the row must be delete .

How to check the NaN values in the mat file and delete the rows of the NaN values ?

[kH]

Eg :

X.mat file contains 600x1 varibles (signals)

Let

field values dimension

signal 1 [NaN ;NaN;0;0;0] 5x1

signal 2 [NaN ;NaN;3;0;5] 5x1

signal 3 [NaN ;NaN;0;3;0] 5x1

signal 4 [NaN ;NaN;2;0;0;9;8] 7x1

signal 5 [NaN ;NaN;0;1;0] 5x1

signal 6 [NaN ;NaN;0;0;6] 5x1

output :

signal 1 [0;0;0] 3x1

signal 2 [3;0;5] 3x1

signal 3 [0;3;0] 3x1

signal 4 [2;0;0;9;8] 5x1

signal 5 [ 0;1;0] 3x1

signal 6 [0;0;6] 3x1

how to obtain the above output ?

[Stephen23]

"I have mat file with 6778 x1 variables..."

This is not clear: does the .mat file contain:

• 6778 separate variables (of unknown size), or
• 1 variable of size 6778x1 ?

Answer 1

[Stephen23]

load into an output variable (which is a scalar structure), then loop over the fields:

https://www.mathworks.com/help/matlab/ref/fieldnames.html

https://www.mathworks.com/help/matlab/matlab_prog/generate-field-names-from-variables.html

For example:

S = load('NameOfYourFile.mat');
C = fieldnames(S);
for k = 1:numel(C)
    M = S.(C{k});
    M(isnan(M)) = [];
    S.(C{k}) = M;
end

If required, save again using the -struct option:

save('NameOfNewFile.mat','-struct','S')

Answer 2

[Rik]

A(isnan(A))=[];

[kH]

But how to do it for complete Mat file . This method works for indiviual varibles only .