here the easy language code for the volume. You can import it into your Tradestation program.Quote from Ezzy:
As others have mentioned is depends on the software, generally it's close to close. Today I had a bar where both open and close were the same price and lower than the previous close. It is a black bar on my screen and should be red. So there will be minor differences here and there but don't get hung up on them. That is why it's important to look a little loosely at times - at the price movement.
I noted the discrepencies on the Tradestation chart attached. There was obviously some unique bar coding here. The important thing is the concept, the movement of price with regard to the volume.