%% Adjust Timetable by Inserting Missing Data Indicators
% Create a timetable that contains times and measurements of wind speed and direction.

Time = datetime({'2015-12-18 07:00:00';'2015-12-18 08:03:47';...
                 '2015-12-18 09:00:00';'2015-12-18 10:00:00';...
                 '2015-12-18 10:59:34'});
WindSpeed = [13.4;6.5;7.3;8.5;2.3];
WindDirection = categorical({'NE';'N';'NE';'NW';'W'});
TT1 = timetable(Time,WindSpeed,WindDirection)

%
% Adjust the data to an hourly time vector. Insert missing data indicators in  TT2 where TT1 does not have data on the hourly time vector.

TT2 = retime(TT1,'hourly')

% Copyright 2012 The MathWorks, Inc.