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Histogram with time data

Asked by Michael Molini on 11 Jul 2019
Latest activity Answered by Dheeraj Singh on 17 Jul 2019
I have to create a histogram showing the frequency of wake up times. For example my Data consists of 21 various wake up times ranging from 7AM to 12:30PM. However My data for time is in decimal format. For example, waketime is 7.25 instead of 7:15 AM. I want to change the x axis to display the correct time in HH:MM AM.

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KSSV
on 11 Jul 2019
Have a look on xticks

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1 Answer

Answer by Dheeraj Singh on 17 Jul 2019

Hi,
You can use the xticks and xticklabels to plot the frequency histogram.
The following code below implements the above required functionality
%wakeup data
x=[7 7.25 8.25 9 10.5 11 7.25 9.15 9.25 10.15 12]
%define no of bins
noOfBins=min(x):0.25:max(x);
%plot histogram
histogram(x,numel(noOfBins));
timeFormat=noOfBins;
timeFormat=timeFormat/24;
la=datestr(timeFormat,'HH:MM')
xticks(noOfBins);
xticklabels({la});
The following figure below shows example output of the histogram
histogram.png

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