How to code to refresh a tick chart to a new tick bar size?

[xxzbill]

I am looking to:

1. find the total number of ticks/trades in the last day on a 1000-tick chart
2. divide by 60,
3. then refresh the tick chart to the new tick value, so the tick chart shows exactly 60 bars per day

How do I start on #1?

For #3, writing BarsPeriod.Value=2000 in OnStateChange on a 1000 tick chart doesn't do anything - the chart is still 1000 tick.

Thank you for any help!

[NinjaTrader_ChelseaB]

Hello xxzbill,

It is not supported to directly change the data series information of a chart.

An undocumented approach would be to send keys using Keyboard.FocusedElement.RaiseEvent. The RolloverIndications indicator has an demonstration of this in a button click.

https://ninjatraderecosystem.com/user-app-share-download/rolloverindications-2/