custom feeds

[onnb1]

hi - I have a process that writes tick data to a file in real time. I need to present this information on a bar chart.

Is there any way to connect NT to a file like this where it would read the data from the file and present it on a chart? Is there an api or a feature in NT that allows this?

Hope this makes sense

Onn

[usct01]

hi - I have a process that writes tick data to a file in real time. I need to present this information on a bar chart.

Is there any way to connect NT to a file like this where it would read the data from the file and present it on a chart? Is there an api or a feature in NT that allows this?

Hope this makes sense

Onn

Me too looking for same

[NinjaTrader_JC]

Hello,

You may see the following thread about Custom Data Feed Connections.

http://www.ninjatrader.com/support/forum/showthread.php?t=50234

[usct01]

After going through the thread it seems it's not possible.
Is it possible to write a code which automatically invoke historical data import from text files at periodic intervals. This would be something like manual process of importing data from text file, to be executed automatically.

[onnb1]

hi - is there a limit on the rate that methods like Last/Bid/Ask can be called?

Also, how often or when is OnBarUpdate called for an indicator? Is there a way to set it so it gets called every X ms?

[NinjaTrader_CalH]

Hi Onnb1,

To answer your question, When you say Last/Bid/Ask methods could be called are you referencing using these from the DLL interface or via NinjaScript OnBarUpdate GetCurrentAsk() method?

Additionally, OnBarUpdate always gets called depending on your Calculate on Bar Close is set to true/false. If Calculate on Bar Close is set to false, it will be called with each call to last. When set to true it will get called when the bar closes.

This will give me an idea of how it's being called and can further assist you.

[onnb1]

hi Carl and thanks for following up.

1. I am asking about the DLL interface
2. Calculate on bar close is set to false - does OnBarUpdate get called on *every* incoming tick? Is there a minimum interval between OnBarUpdate getting called?

Onn

[NinjaTrader_Matthew]

1. There would not be any designed limits on how often you call these bid/ask/last methods.

2. Yes, it would come in on every tick of that bar. If you're only running on Last price on a single instrument, OBU would only be called when there has been a tick on the last price.