%Process all the diaries.
load diariesF2012
%% Extract the fields

%Number of participants:
NP = size(bedTimes,2);
ND = size(bedTimes,1);
%% Process wakeTimes
fwakeTimes=24*(wakeTimes-floor(wakeTimes)); %in 24 hours

%% Process bedTimes
fbedTimes=24*(bedTimes-floor(bedTimes)); %in 24 hours
% Make a modification to the bedTimes for those who go to bed after
% midnight.

for i = 1:ND
for j=1:NP
   if fbedTimes(i,j) < 6
         fbedTimes(i,j)=fbedTimes(i,j)+24;
   end
end
end

%% Process hours of Sleep
fsleepTime=24*(wakeTimes-bedTimes); %in 24 hours
%% Part II Calculate overall median values by section.
% First we make a number of columns;
bedTimes_by_section=cell(1,7);
wakeTimes_by_section=cell(1,7);
sleepTimes_by_section=cell(1,7);
minutes_to_sleep_by_section=cell(1,7);
minutes_of_nap_by_section=cell(1,7);
times_awake_by_section=cell(1,7);
for i=1:NP
s=section(i)+1;
bedTimes_by_section{s}=[bedTimes_by_section{s};fbedTimes(:,i)];
wakeTimes_by_section{s}=[wakeTimes_by_section{s};fwakeTimes(:,i)];
sleepTimes_by_section{s}=[sleepTimes_by_section{s};fsleepTime(:,i)];
minutes_to_sleep_by_section{s}=[minutes_to_sleep_by_section{s};toSleepMinutes(:,i)];
minutes_of_nap_by_section{s}=[minutes_of_nap_by_section{s};minutesNap(:,i)];
times_awake_by_section{s}=[times_awake_by_section{s};timesAwake(:,i)];
end

% compute medians by section
med_bedTimes_by_section=[];
med_wakeTimes_by_section=[];
med_sleepTimes_by_section=[];
med_minutes_to_sleep_by_section=[];
med_minutes_of_nap_by_section=[];
med_times_awake_by_section=[];

Laboratory 5 Least Squares In this laboratory session we will lear...