It seems to me that creating bars on arbitrary time periods like 1min, 5min, 1 hour etc. is missing most of the action. I have a strategy that trades off hourly bars and takes decisions every 3 hours whiich works to some extent but I can't help thinking that the time delays are reducing the effectiveness of the strategy. Have other schemes for creating bars been considered and are they used e.g. :- - Constant volume bars, create a new bar when a volume target has been acheived rather than a time threshold, - Continuously updated time bars, e.g. 5 minute bars but updated every tick so last bar is T-5 mins, last but one is T-10 to T-5 mins etc. The last bar is always a complete 5 minute bar rather than a partial one - if that makes sense. - Log scale time bars - bars get fatter (i.e. more time) as they get older. Also, it seems to me that far too much emphasis is placed on open and close as this is used to color the bar, but the open and close is purely arbitrary based on where the price happened to be at bar open and close rather than truly reflecting where it spent most of it's time - seems high and low are far more significant, so perhaps using the midpoint as close would be better or better still the VWA for that bar. On a similar theme, I thought about 'density' bars where they are colored based on where the price has spent most of it's time, so around the high and low it's likely to be pale but getting brighter where most of the price action has been. What do you think ?