Announcement

**NinjaTrader_ChelseaB** · 10-08-2020, 03:44 PM

Hello Dougtre,

Re-use brushes, disposed and instantiated in OnRenderTargetChanged(), instead of generating thousands of new objects.

Below is a link to an example.

Performance optimization - NinjaTrader Support Forum

https://ninjatrader.com/support/forum/forum/ninjatrader-8/indicator-development/98639-performance-optimization?p=789606#post789606

Support for the development of custom indicators using NinjaScript.

**Dougtre** · 10-08-2020, 04:29 PM

Thanks Chelsea for the suggestion.

Not sure I understand the use of OnRenderTargetChanged()

NinjaTrader 8

https://ninjatrader.com/support/helpGuides/nt8/?onrendertargetchanged.htm

Couldn't find OnRenderTargetChanged() in the code

The TimeZoneColors.cs code here:

#region Using declarationsusing System;using System.Collections.Generic;us - Pastebin.com

https://pastebin.com/Ri8JbSyc

Pastebin.com is the number one paste tool since 2002. Pastebin is a website where you can store text online for a set period of time.

I loaded the indicator as is (no customization).

Why doesn't it work out of the box?

Is it a NT8 latest version issue?
Says created by
NinjaTrader_Jesse

On the user app page:

Timezonecolors - NinjaTrader Ecosystem

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

This colors 3 different time zones. It allows for timezones that cross date boundaries and shows overlapping timezones by merging the 2 time zone colors. It also display the name of the timezone or names of overlapping time zones. It is an update of the ColoredTimeRegions indicator. For more apps from this user, check out […]

**NinjaTrader_Jim** · 10-09-2020, 08:01 AM

Hello Dougtre,

This indicator creates new Windows.Media.Brushes in OnBarUpdate and will reach the maximum allowable amount of Windows.Media.Brushes when there is a lot of data on the chart.

We would suggest reducing the amount of data on your chart when using this indicator.

More information on custom Brush limits can be found here - https://ninjatrader.com/support/help...gcustombrushes

If you would like to use this indicator on a chart that has a lot of data, it can be modified to use SharpDX rendering and create SharpDX brushes instead of new SolidColorBrushes.

To get more acquainted with SharpDX rendering, please see the Help Guide article below, and please see the SampleCustomRender indicator that comes with NinjaTrader.
https://ninjatrader.com/support/help..._rendering.htm

We look forward to assisting.

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NT8 user-app-share-download timezonecolors-2 not working

NT8 user-app-share-download timezonecolors-2 not working

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