There may be situations where you only need to run EasyLanguage programs on today’s bars (i.e you don’t need to waste the time and programming resources running your program(s) on all the historic bars because today. You only need to see calculated values today.)
Bear in mind that the simple approach demonstrated in this quick-tip would not work so well with a study that used an accumulative calculation (i.e. an exponential moving average, for example.)
I tested the program by using a VWAP_H function that calculates an estimate of the volume weighted average price.
The very simple code I used was as follows:
Once ClearPrintLog;
If D = CurrentDate Then
Begin
Once Print( D, T, "Today is today" ); // Prints that statement once for the current date
Plot1( VWAP_H ); // Runs VWAP_H just for today
End;
Plot2( VWAP_H ); // Runs VWAP_H on every bar
This was applied to the following chart
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