Plotting daily occurrence of events in a 3 year time span

How can I plot the occurrence intensity ( nr. of events in days) on daily basis, given that I have datetime arrays that include events ranging in a time span of up to 3 year. I have used [Discret,E] = discretize(time_intensity,'month'); and then [Histcount,edges]=histcounts(Discret); and it works ( after changing the XTicks to show monthly periods ) to achieve my goal for monthly basis but I am not able to do it for daily occurrence. I would like to have a plot of such data where on the y-axis I have the nr. of events happened on each day and on the x-axis the time span ( i.e. from Oct. 2013 to Nov. 2016) which is my events period of observation.

Answer 1

[Jayaram Theegala]

Hello Basmir,

In order to plot the occurrence intensity on daily basis, you can set the 'duration' argument for "discretize" function to 'day' instead of 'month'. You may find the following MATLAB code useful to get started:

if true
  time_intensity = datetime(2016, 1,randi(365,1000,1)); %you can use your values instead of this
  %filter the dates within the required range
  filtered_time_intensity = time_intensity(time_intensity>datetime('Oct-2013') & time_intensity<datetime('Nov-2016'));
  [Discret,E] = discretize(filtered_time_intensity,'day');
  %Calculating number of bins for "histcounts" function
  number_of_days = max(Discret) - min(Discret) + 1;
  [Histcount,edges]=histcounts(Discret, number_of_days); 
end

I hope this helps.

[btåla]

Hello Jayaram,

It was much easier than I thought. Anyway, thank you for the response.

Cheers,