Conversion to double from struct is not possible.

Hello everyone,

I'm a matlab beginner. I imported txt files to matlab whitout problem, so I want to remove all DC noise of them in a loop. Could someone help me to reach this goal?

Filenames = dir('*mat'); 
numfiles1 = length(Filenames);
EEGSinDC = [];
for i = 1 : numfiles1
load (Filenames(i).name);
EEGSinDC(i) = Filenames(i);
EEGsinDC = EEGSinDC(i) - mean(EEGSinDC(i));  
end

Conversion to double from struct is not possible.

[James Tursa]

What variables are in the mat files?

[Stephen23]

Víctor Magdaleno's incorrectly posted "Answer" moved here:

registro is the variable

Answer 1

[Alan Moses]

The variable name can be used to select only the required data from the MAT file. To save the changes made to your data back to the MAT file, you can use the save function.You can use this piece of code to solve the issue:

Filenames = dir('*mat'); 
numfiles1 = length(Filenames);
 
for i = 1 : numfiles1
    %replace with your variable name in the below line of code
    load(Filenames(i).name, 'variableName');
    variableName = variableName - mean(variableName);
    %save(Filenames(i).name,' variableName ');
end

Alternately, you can use the matfile function if you wish to change the variables without loading the data into the workspace.

[Víctor Magdaleno]

thank you! It works properly now.

Answer 2

[Walter Roberson]

Filenames = dir('*mat'); 
numfiles1 = length(Filenames);
EEGSinDC = cell(numfiles1, 1);
for i = 1 : numfiles1
  filedata = load(Filenames(i).name);
  EEGSinDC{i} = filedata.registro - mean(filedata.registro);
end

[Víctor Magdaleno]

thank you! It works properly now.