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How do I compute a 24 hour rolling average

I need to compute a 24 hour rolling average for each individual subject. 

 

I have the following columns:

 

Subject ID

Time stamp

Milk yeild

 

Can anyone help direct me in the right direction?

Re: How do I compute a 24 hour rolling average

This worked great! Just what I was looking for. Thank you

Re: How do I compute a 24 hour rolling average

Here is a simple script that creates your rolling average.  It creates a new column and uses a formula to generate the rolling average. Attached is a sample data table with the new column.  Please validate the calculations

Names Default To Here( 1 );
dt = Current Data Table();

dt << New Column( "Rolling Average",format("Percent",7,2),
 Formula(
  curTime = :Time stamp;
  curSubject = :Subject ID;
  Mean(
   :Milk yield[dt <<
   get rows where(
    :time stamp >= curTime - In Days( 1 ) & :time stamp
     <= curTime & curSubject == Subject ID
   )]
  );
 )
);