hello
with your input data in attachment, try this code :
% load data
data = readmatrix('data.txt'); % or readtable if you prefer
% select condition & device
condition = 8;
device = 1;
% select rows that satisfy both conditions
ind = (data(:,2) == condition) & (data(:,3) == device);
data_out = data(ind,:); %
% export to txt file
filename_out = "dataProcessed_condition" + num2str(condition) + "_device" + num2str(device)+ ".txt";
writematrix(data_out,filename_out,"Delimiter","tab");
% edit the file
type(filename_out)
