[D,S] = xlsread('Vinf9P12RPM2981K0I0B0V2.000001.xls','Group 2');
Fs = 1/0.4;
[D79,tr] = resample(D(:,7:9),D(:,2),Fs);
figure
plot(D(:,2), D(:,7:9), '+-')
grid
xlim([10 30])
title('Original Signal')
legend(S(7:9), 'Location','SE')
figure
plot(tr, D79, '+-')
grid
xlim([10 30])
title('Resampled Signal')
legend(S(7:9), 'Location','SE')
The original signal has a mean sampling frequency of 0.4063 s (median 0.3413 s) with a standard deviation of 0.2965 s.
This resamples it to a sampling interval of 0.4 s and a sampling frequency of 2.5 Hz.
