MATLAB: Split columns and save seperate .mat files

columnsfilesplit

Dear Reader,
I would like to save each column (4 columns) of a data.mat file as a seperate .mat file including the units, labels ISI ISI_units_start_sample 
labels :
    'PPG100C                                            '
    'TSD160A - Differential Pressure, 2.5 cm H20, DA100C'
    'Scanner Trigger                                    '
    'ECG100C                                            '
 units:
val =
    'Volts '
    'cm H20'
    'Volts '
    'mV    '
Do you know how to do this?
Thank you in advance
Marlou

Best Answer

Simpler, much more robust, much more versatile code (without bad code practices such as dynamically accessed variable names, loading directly into workspace, copy-and-pasting code...).
Apparently you want to access the columns of one array, which is named data and is saved in a .mat file, and save each of its columns in their own .mat file. This is easy to do:
S = load('Marlou.mat');
for k = 1:size(S.data,2);
    V = S.data(:,k);
    F = sprintf('column_%d.mat',k);
    save(F,'V')
end
https://www.mathworks.com/help/matlab/matlab_prog/generate-field-names-from-variables.html
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