How can I update an indicator each second instead of tick or price change?

[wjadevries]

I created an indicator to show how long each non-time based bar takes to form.
But it seems that the indicator updates only each tick, not each second.

I used a seconds timer to update the Value[0] in the plot, like below.
Print(thetime) works fine, but the plot update doesn't.


lastTime = DateTime.Now;
myTimer = new System.Timers.Timer(1000);
myTimer.Elapsed += TimerEventProcessor;
myTimer.Enabled = true;


private void TimerEventProcessor(Object myObject, EventArgs myEventArgs) {
TriggerCustomEvent(SetPriceMarker, 0, null);
}

private void SetPriceMarker(object dummy) {
ChartControl.Dispatcher.InvokeAsync((Action)(() =>
{
int secs = (int)(DateTime.Now.Subtract(lastTime).TotalMinutes *60);
string info = string.Format("{0:0}:{1:00}", secs/60, secs%60);

Print(info); //works and prints every second

//but these don't do anything before a tick appears:
Draw.TextFixed(this, "WjaTimeInBar", info, TextPosition.TopRight, ChartControl.Properties.ChartText, ChartControl.Properties.LabelFont, Brushes.White, Brushes.White, 100);
UpdateBar();
}));
}

protected override void OnBarUpdate()
{
if (IsFirstTickOfBar || Calculate==Calculate.OnBarClose) {
lastTime = Time[0];
}
UpdateBar();
}

private void UpdateBar() {
if (State==State.Realtime) {
Value[0] = DateTime.Now.Subtract(lastTime).TotalMinutes;

} else if (State==State.Historical) {
if (CurrentBar>1 && Time[0].Day==Time[1].Day) {
Value[0] = Time[0].Subtract(Time[1]).TotalMinutes;
}
}
}

[ballboy11]

you can add data series of 1 second and plot using that dataseries

[wjadevries]

Can't, because I want to detect how long a 1000 tick or a Renko bar takes to form.
Which I can't do using a 1 second series, without disrupting the view in the tick or renko chart.
I'm just asking how to refresh/update the indicator panel using the timer, or at least force the drawText to display.

[ballboy11]

put it in your ninjascript

it will not disrupt the view.
place the value in BarsInProgress == 1 but plot on BarsInProgress ==0

[wjadevries]

I don't understand.
can you supply an example script?

[NinjaTrader_BrandonH]

Hello wjadevries,

Thank you for your post.

How can I update an indicator each second instead of tick or price change?

NinjaTrader cannot build bars based on a timer because bars are created using incoming tick data. Something you could do is calculate new plot values based on a timer instead of each time the bar updates. I have attached an example script demonstrating how to calculate new plot values based on a timer. In the example script, our timer calculates new values and those calculated values get set to plot in OnBarUpdate.

I'm just asking how to refresh/update the indicator panel using the timer, or at least force the drawText to display.

You could use ForceRefresh() to force chart visuals to re-render. As the chart is optimized on a timer, calling ForceRefresh() will NOT immediately trigger a render event. Calling ForceRefesh() simply re-queues the render event to trigger during the next timed event. In other words, it may take up to 250ms for the render event to function.

Please see this help guide link for more information about ForceRefresh() - https://ninjatrader.com/support/help...rcerefresh.htm

If you would like to calculate how long it takes a Renko bar to form, you could consider doing something similar to the BarTimes indicator located in our publicly available User App Share center.

BarTimes - https://ninjatraderecosystem.com/use.../nt8-bartimes/

Let us know if we may assist further.


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[wjadevries]

Thanks.
One more question:
if I call ForceRefresh in an indicator that is in a separate panel, will it refresh the whole chart with all panels or just the indicator panel calling ForceRefresh()?

[NinjaTrader_BrandonH]

Hello wjadevries,

Thank you for your note.

Calling ForceRefresh() will refresh all render targets in a chart window, not just for an individual panel. This would include chart bars, indicators, and drawing objects. ForceRefresh() sets the entire chart's RenderTarget to be repainted which means any items in that RenderTarget would refresh.

As the chart is optimized on a timer, calling ForceRefresh() will NOT immediately trigger a render event. Calling ForceRefesh() simply re-queues the render event to trigger during the next timed event. In other words, it may take up to 250ms for the render event to function.

Please let us know if we may further assist.