How to analyze different segments in a timetable?.

Hi I have a timetable with different physiologic measurements (example attached).

The first column is duration in seconds, and the last column is a time marker that means: 0 is off and 5 is on. When time marker is on, means that the recordings corresponds to the experiment. The other columns are physiological variables as the figure shows.

As the Time Mark shows we had 10 experiments. I would like to have advice on the best way to extract the duration of every experiment.

Thanks

[Frank Pernett]

Thanks!!

[Star Strider]

As always, my pleasure!

.

Answer 1

[Star Strider]

Try this —

LD = load('timetable.mat');
AB001 = LD.AB001;
ExptMarker = AB001.fTimeMark;                               % Marker Vector
Lv = ExptMarker>0;                                          % Logical Vector
ExptStart = strfind(Lv', [0 1])+1;                          % Start Indices
ExptStop = strfind(Lv', [1 0]);                             % Stop Indices
ExptIdxMtx = [ExptStart; ExptStop]';                        % Index Matrix  
ExptTimes = AB001.time(ExptIdxMtx);                         % Time Matrix
ExptDuration = ExptTimes(:,2) - ExptTimes(:,1)              % Duration Vector

producing:

ExptDuration =

10×1 duration array

53 sec

70 sec

69 sec

77 sec

77 sec

91 sec

101 sec

107 sec

110 sec

121 sec

.