i had written a code as follows :
but due to unavailability of signal processing toolbox not able to perform the rise time and falltime commands.
can we do it in generalised way, without using any toolbox as such.
filetype='*.xlsx';
f=fullfile(folder,filetype);
d=dir(f);
for k=1:numel(d)
MATRIX = xlsread(fullfile(folder,d(k).name));
rise_time=riserisetime(MATRIX(:,2));
fall_time=falltime(MATRIX(:,2));
filename1 = 'test1.xlsx';
filename2 = 'test2.xlsx';
writematrix(rise_time,filename1,'sheet',k);
writematrix(fall_time,filename2,'sheet',k);
end