Texts created by indicator are deleted

[iradielt]

Hello, I have an indicator that marks Text in the Chart, with OnMarketData, but when I change any meter of any indicator or it deletes everything, you know how I can save them.

[NinjaTrader_Kate]

Hello iradielt,

Thank you for your inquiry.

By default, OnMarketData is not called on historical data (backtest), so if you're creating your text from OnMarketData, this would be expected when modifications are made and the indicator reloads, however it can be called historically by using TickReplay

If used with TickReplay, please keep in mind Tick Replay ONLY replays the Last market data event, and only stores the best inside bid/ask price at the time of the last trade event. You can think of this as the equivalent of the bid/ask price at the time a trade was reported. As such, historical bid/ask market data events (i..e, bid/ask volume) DO NOT work with Tick Replay. To obtain those values, you need to use a historical bid/ask series separately from TickReplay through OnBarUpdate(). More information can be found under Developing for Tick Replay in our help guide here:

https://ninjatrader.com/support/helpGuides/nt8/developing_for__tick_replay.htm

Please let us know if we may be of further assistance to you.

[iradielt]

but could you even export the text data from the chart for analysis? Because they are erased and I cannot recover them.

[NinjaTrader_Kate]

Hello iradielt,

Thank you for your reply.

Once the text that's written previously is erased you wouldn't be able to retrieve it, short of using Tick Replay to attempt to redraw those prints to the chart.. However, you could consider modifying your script to write the same information to a file when it prints text to the chart so you'd have it in a file for later reference. You could use a StreamWriter to do so:

https://ninjatrader.com/support/helpGuides/nt8/using_streamwriter_to_write_to.htm

Please let us know if we may be of further assistance to you.

[iradielt]

Thank you very much, now I am saving it to text files.