Error on Reqesting Bars Series

[JohnS52]

Hello - I am trying to build an indicator that plots the OBV with 3 smas. The attached code compiles (see attached txt file) but when I try to add it to a chart I get this message:

Any suggestions?

Thank you in advance for any help.

[NinjaTrader_ChelseaB]

Hello JohnS52,

As a tip, to export a NinjaTrader 8 NinjaScript so this can be shared and imported by the recipient do the following:

1. Click Tools -> Export -> NinjaScript...
2. Click the 'add' link -> check the box(es) for the script(s) and reference(s) you want to include
3. Click the 'Export' button
4. Enter a unique name for the file in the value for 'File name:'
5. Choose a save location -> click Save
6. Click OK to clear the export location message

By default your exported file will be in the following location:

• (My) Documents/NinjaTrader 8/bin/Custom/ExportNinjaScript/<export_file_name.zip>

Below is a link to the help guide on Exporting NinjaScripts.
http://ninjatrader.com/support/helpG...-us/export.htm


Does the chart load without the indicator?

What do you have the Load data based on set to in the Data Series?

[JohnS52]

Hi Chelsea - Here's the Export - see attached.

I tried the indicator on both ES 12-21 and RTY 12-21, both pre-session (before 6 pm Sunday) and during session (after 6 pm) to no avail.

All the other indicators are working fine. The Charts load fine without this indicator. Mystified - I am probably overlooking something obvious.

[NinjaTrader_ChelseaB]

Hello JohnS52,

The main issue I am seeing is that indicators are being called in State.SetDefaults.

Indicators cannot be called until State.DataLoaded when the data is ready to supply the indicators.

[JohnS52]

Hello Chelsea -

I moved the indicators to State.DateLoaded (see attached). I no longer get the Error on Requesting Bars message and it compiles fine but none of the lines actually plot. All I get is an empty box on the chart with the label attached. The AddPlots should be in State.SetDefaults, right? I tried setting DrawOnPricePanel to both true and false to no avail. Any suggestions? What am I doing wrong?

[NinjaTrader_ChelseaB]

Hello JohnS52,

In the script you have provided, no values are being set to the plots in OnBarUpdate().

My guess is you are wanting to set Values[0] to the value of the OBV1.
Values[0][0] = OBV1[0];

Values[1] you are probably wanting to set to the SMA1.
Values[1][0] = SMA1[0];

etc..

Below is a link to the help guide on the Values collection in the help guide.
https://ninjatrader.com/support/help...nt8/values.htm

As well as AddPlot() which has example code.
https://ninjatrader.com/support/help...t8/addplot.htm

Have a look at the MACD indicator which is a simple indicator that has multiple plots.

[JohnS52]

Many thanks.That worked perfectly. Attached is the code, in case anyone wants to see it.