How to only process the last 500 bars to save cpu and ram

[AaronKoRn]

TV has something like this
indicator("EMA", overlay = true, max_bars_back = 500)

in order to save memory and cpu
because my indicator draws a lot

how do I only process the last bars?
basically only process 500 bars at a time

sure you may say, well only display 500 bars
but what if I wanna see 2000 bars because I wanna see the EMA
and I only wanna see the last 500 bars of my indicator?

[NinjaTrader_Jesse]

Hello AaronKoRn,

The easiest way would be to only load 500 bars when you create the chart. If you need to load 2000 bars because of another indicator that would cause your indicator to also observe all 2000 bars.

To prevent your script from processing you would need to use logic to find out what bar you are on and then return to do nothing for that bar.

You could use math to find out how many bars had processed or how many are left to process.

if(State == State.Historical)
{
    int leftToProcess = (Count - 2) - CurrentBar; 
    if(leftToProcess > 500) return; 
}

[AaronKoRn]

Hi Jesse, Yes that is what I want

my mistake, when I put it on OnStateChange
but it didn't work

but when I put on OnBarUpdate
it works