Indicator is disappearing

[haimcn]

Hi,

I have a simple indicator that plots a graph on the chart - however, every time I restart ninja or duplicate the tab into new tab, the indicator is disappearing and doesn't exist in the new tab.
I tried to debug and see if there are any errors, but couldn't get any - the indicator is never loaded on the new tab (unlike other indicators).

Thanks,
Haim

[NinjaTrader_BrandonH]

Hello Haim,

Thanks for your post.

What version of NinjaTrader are you using? Please provide the entire version number. This can be found under Help -> About (Example: 8.?.?.?)

Do you receive an error on screen when this behavior occurs? Are there errors on the Log tab of the Control Center? If so, what do these errors report?

Is the indicator in question one that you programmed yourself? Is the indicator from a third-party developer? Or, is this an indicator that comes default with NinjaTrader?

[haimcn]

Hi,
Thanks for the reply.

NinjaTrader version: 8.0.28.0
I don't have an error message, but I do have a log lines:

10/15/2023 9:47:45 PM	NinjaScript	Failed to restore Indicator 'Unknown'. Most likely (a) the implementation changed or (b) one or more properties have been renamed or removed or (c) the custom assembly which implements this Indicator no longer is there.

10/15/2023 9:47:45 PM	Default	Could not save indicator 'ChartMarkup:' There was an error generating the XML document.

I programmed the indicator.

Thanks again,
Haim

[NinjaTrader_BrandonH]

Hello Haim,

Thanks for your notes.

Do you have any public Brush properties being defined in your script?

If so, are you calling [XmlIgnore] on that defined public Brush property?

See this help guide page for more information about the XmlIgnore attribute: https://ninjatrader.com/support/help...eattribute.htm

Working with Brushes: https://ninjatrader.com/support/help...th_brushes.htm

Below are forum threads discussing this reported behavior which you might find helpful.

https://forum.ninjatrader.com/forum/ninjatrader-8/platform-technical-support-aa/1064433-could-not-save-indicator-there-was-an-error-generating-the-xml-document

https://forum.ninjatrader.com/forum/ninjatrader-8/platform-technical-support-aa/106319-error-unhandled-exception-there-was-an-error-generating-the-xml-document

[haimcn]

Thanks, I used the instructions above to resolve the problem.
I wonder, in other indicators I wrote, I was able to store the Brush - it seems to be inconsistent.

Thanks again.

[haimcn]

One other question: now that I changed the serialization, there is very long text in the indicator description on the chart - can I shorten or hide it?

[NinjaTrader_BrandonH]

Hello Haim,

Thanks for your notes.

Are you referring to the indicator label in the top left corner of the chart when the indicator is enabled on the chart?

You could modify the 'Label' field in the Properties section of the Indicators window.

See the 'How to edit an indicator's parameters' section of this help guide page: https://ninjatrader.com/support/help...indicators.htm

Or, you could override the DisplayName in your indicator's code to customize the chart label.

See this help guide page for more information about DisplayName and sample code: https://ninjatrader.com/support/help...isplayname.htm

[haimcn]

Thanks again!!!