This ProBuilder code snippet demonstrates how to calculate the relative volume of a stock compared to its average volume over a specified number of days. The relative volume is a useful indicator in trading that shows how current volume compares to past trading volumes at a similar time of day.

Period = 5 //X days averaging period
intraindex = intradaybarindex
$ivol[intraindex] = volume
$gvol[barindex] = volume
$gintraindex[barindex] = intraindex
count = 0
sum = 0
for i = barindex downto 0 do
    if $gintraindex[i]=intraindex then //found same intraday bar
        sum=sum+$gvol[i]
        count=count+1
    endif
    if count=period then break endif
next
avg = sum/period
rvol = $ivol[intraindex] / avg
return rvol
style(histogram)//$ivol[intraindex], avg coloured(255,0,0)

Explanation of the code:

• Initialization: The code starts by setting the averaging period to 5 days. It then initializes variables to store the index of the current intraday bar, the volume of the current intraday bar, and a global volume array indexed by the bar index.
• Volume Accumulation: A loop iterates from the current bar index down to the first bar. Inside the loop, it checks if the bar belongs to the same intraday period as the current bar. If true, it accumulates the volume of these bars and counts the number of bars considered.
• Average Calculation: Once the count reaches the specified period (5 days in this case), the loop breaks, and the average volume is calculated by dividing the accumulated volume sum by the count.
• Relative Volume Calculation: The relative volume (rvol) is then calculated by dividing the volume of the current intraday bar by the calculated average volume.
• Output: The relative volume is returned and displayed as a histogram with the current intraday volume and average volume colored in red.

This code is a practical example of how to use loops, conditional statements, and arithmetic operations to analyze trading data in ProBuilder.