Some trading setups have specific criteria that require a minimum ATR on a certain timeframe for the instrument to be playable.
The painting of the chart background based on the ATR value is useful as a quick visual reference.
The minimum ATR value can be adjusted to any specific level for any timeframe.
If the ATR dips below the user defined minimum, the trader can quickly see that the ATR is below the minimum criteria, and should not trade that instrument (based on their personal trade criteria).
If the background is not painted by the indicator, then the ATR is above the user defined minimum.
Parts of this script used the default/stock Tradingview ATR indicator to build from.
In true TradingView spirit, the author of this script has published it open-source, so traders can understand and verify it. Cheers to the author! You may use it for free, but reuse of this code in a publication is governed by House Rules. You can favorite it to use it on a chart.