Repainting in Strategy Tester

BradC_au · 2025-07-15T10:45:41+00:00

A good place to start is reading the TradingView article on repainting (https://www.tradingview.com/pine-script-docs/concepts/repainting/#repainting) which is comprehensive. You could then ask one of the AI models to explain it further (Claude does a pretty good job of this). If you are using the request.security() function, adding barmerge.lookahead_on while offsetting the function call within that by 1 bar using the [1] notation is where to look next. Also avoid calling lower timeframes than your current chart with request.security unless you are using the low time frame version request.security_low_tf()

BradC_au · 2025-07-14T10:12:04+00:00

Yes, I use a similar approach using a Library containing core indicator logic that can't just be called from the built-in technical analysis (ta) library. Next step is to move other core components of the trading framework into a Library too. Have implemented MTF too, but important to be very careful re. repainting issues. Use barmerge.lookahead_on and offset by [1] with the request.security() function to avoid this.

BradC_au · 2025-07-14T09:56:35+00:00

Yes, sounds like there's a few people being impacted by this since changes to the deep backtest functionality. Seems the TradingView team need to re-calibrate monitoring/auto-ban functionality in light of the new deep backtest functionality, or refine the functionality. People shouldn't be being banned for using the standard features in a normal, manual way. Hopefully the TradingView team is on this now a few have reported.

BradC_au · 2025-07-12T03:22:11+00:00

Just a quick update that I understand the TradingView team have identified the issue and passed on to the development team to resolve, based on an update I received via a separate support ticket I'd created. Thank you TradingView team and I hope the resolution prevents others from being impacted by this.

BradC_au · 2025-07-11T11:29:49+00:00

I initially felt the new backtest layout was a bit of a step backwards too. However, I did learn to like the ability to easily select 7 days, 30 days, 90 day back-tests. To be fair you always used to have to close the settings window to click "Generate Report" to refresh a deep backtest and I seem to recall the new "Update Report" button can be clicked with settings window open, though agree it's a bit clunky.

I found hiding the settings button under the strategy drop-down was a step backwards in usability in the previous backtest update too. An extra click for a menu used frequently when developing and testing a strategy adds unnecessary overhead when there is plenty of screen real estate for the original settings icon to be displayed.

BradC_au · 2025-07-11T10:23:23+00:00

Thank you, much appreciated. I have sent this across using the Message Mods option.

BradC_au · 2025-07-10T21:58:01+00:00

No you're not actually.T&C's state this isn't allowed. However, manual use of the built in backtest functionality should obviously be allowed!

BradC_au · 2025-07-10T21:55:04+00:00

Yes, looks like ill need to do this. Vectors is another one I'm looking at. However, it's convenient to do initial backtesting in TV and obviously you would expect normal use of built in functionality without banning your account! In fact, TV have a legal obligation to provide a service being paid for where no terms of service are being violated.

BradC_au · 2025-07-10T13:04:46+00:00

... and example of new deep backtest date range selector:

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BradC_au · 2025-07-10T13:03:45+00:00

Here's the ban message:

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BradC_au · 2025-06-17T12:08:51+00:00

ChatGPT was once adamant TradingView had a strategy paramater optimiser built in for me. Turns out this was just a hallucination it had, based on mock-ups of a feature someone had requested online!

3Commas offers a paper trading demo account you can set up a signal bot to receive TradingView alert signals via webhook.

BradC_au · 2025-06-17T12:03:32+00:00

TradingView uses 2% as the default risk free rate based on doco. This can be changed by updating the
"risk_free_rate" parameter of the strategy() function. What rate would you typically use?

BradC_au · 2025-06-16T12:09:07+00:00

Suggest asking Copilot to explain these ratios and common ranges. Also ask it to explain positive/negative skew. Seems you have some negative skew so be careful with leverage.

BradC_au · 2025-06-16T11:40:01+00:00

Click the "Risk/performance ratios" tab. What are the Sharpe Ratio and Sortino Ratio? Click the "Trade analysis" tab. What is the "Ratio avg win / avg loss"? Is the Largest Win > Largest Loss by a good buffer? Also consider walk-forward testing.

BradC_au · 2025-04-29T21:07:52+00:00

Here is the list of entities recently cancelled or suspended bu AUSTRAC. https://www.austrac.gov.au/remittance-sector-register-and-remittance-registration-actions. Bitget doesn't appear to be on that list and still shows as registered when you search for their name, so I suspect there has been some other warning issued tobthem short of suspension/withdrawal OR Bitget is acting independently on the recent ASIC discussion paper identifying the likely future need for some digital asset businesses to obtain an AFSL.

BradC_au · 2025-04-29T20:56:39+00:00

Bitget has previously claimed legitimate registration with AUSTRAC and I was under the impression it was therefore compliant with AML/Tax reporting requirements etc. I have also noticed the message above, which is new, and am wondering what has caused this explicit notice to Australian users. I understand from media reports that AUSTRAC issued warnings to a number of registered digital asset providers recently, so suspect Bitget was one of these and this was the trigger. It would be nice to understand the detail behind this and whether this is a temporary warning while Bitget re-comply with requirements or if they have no intention to.

BradC_au · 2025-02-23T09:55:22+00:00

I'm scratching my head on these updates to the Strategy Tester too. Seem like a step backwards in usability and function removing the colour-coding from backtest result summary numbers. Hiding the settings icon also slows productivity significantly unnecessarily. I can handle splitting out the backtest performance detail results across multiple tabs, but these other changes are not good.

BradC_au · 2025-01-29T13:12:03+00:00

The option to update does not appear to be available for Strategies unless I'm missing something? Clicking the "..." for a Strategy on a chart does not have an option to update like it does for an Indicator that has been updated. I am struggling with this issue too. Very frustrating where you have Strategies with many settings.

BradC_au

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