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    %% Interpolate Irregular Timetable Data to Hourly Times
% Create timetable data that are approximately hourly, but with some irregularity
% in the times. Interpolate the data so that the output timetable has regular 
% hourly row times.
Time = datetime({'2015-12-18 07:02:12';'2015-12-18 08:00:47';...
                 '2015-12-18 09:01:37';'2015-12-18 10:03:10';...
                 '2015-12-18 10:59:34'});
Temp = [37.3;41.9;45.7;42.3;39.8];
Pressure = [30.1;29.9;30.03;29.9;29.8];
TT = timetable(Time,Temp,Pressure)

%%
% To resample with cubic spline interpolation, specify |'spline'|.
TT2 = retime(TT,'hourly','spline')