Relative volume is one of the most important metrics to get an edge. Why on earth would anyone compare volume at 2pm with volume at 10pm...which is always triple average volume simply because it's the opening hour??? You have to compare apples to apples. How can anyone put on a morning day trade without knowing the relative volume of the first hour compared to average volume of the last 20 first hours? This is something Finviz always had. Yet, TOS is still getting out of bed.
How can anyone put on a 1pm day trade without knowing average volume of the last 20 1pm volumes??
The past 2 or 20 Day volume is irrelevant for Day Trading. With Day trading, each day stands on its own, which is why it is a coin flip.
Think of it this way also: TOS is the largest Options Trading Platform on the planet, this site has members from Spain to Singapore.
If it would have been important for the professionals to use, they would have included it.
That being said, there is at least one if not 2 Intraday Volume comparisons in the Universe of thinkscript, here in the Tutorial section.