isBar

[vavatete]

Hello,
I would like to understand the isBar bool.

The help guide say “A bool value representing if OnDataPoint should treat the timestamp as an already built bar instead or as intraday timestamp.”

Already built bar should be a intraday bar, i cant see the diference.

[NinjaTrader_ChrisL]

Hello vavatete, thanks for your post.

It's used to be clear on when a time-based bar needs to be either already part of a bar or if a new bar needs to be created.

Some examples:

• 150 tick timestamp would not be modified, whether it's a bar or not (isBar will always be false for non-time based bars)
• 10 Second BarsType: 12:00:10.000 timestamp when isBar == true is already a bar and will be added with this timestamp 12:00:10.000
• 10 Second BarsType: 12:00:10.000 timestamp when isBar == false is a tick which will add a new bar with timestamp 12:00:20.000
• 1 Day BarsType. 12:00:00.000 AM timestamp with isBar = true will be added as daily bar 12:00:00.000 AM on that date
• 1 Day BarsType. 12:00:00.000 AM timestamp with isBar = false: we look into trading hours definition and calculate, in which daily bar the timestamp of this tick will make it