FAQ

There are multiple libraries that you can use to backtest a strategy in Python. However, I often use Backtrader because it is a nice open-source framework that allows me to quickly test historical data, optimize strategies, and create visual plots. Backtrader comes across as being really flexible and quite easy to use – which makes How to write your first, simple backtrader strategy Read More →

Order placement commands are quite important to your TradingView strategy. But many people are surprised by the default behavior of PineScript when it executes market orders. Sample Strategy  For an illustration, the Pine Script code below highlights a super simple strategy.  In this strategy, we enter and exit long positions using market orders. We also How to Enter/Exit Positions on Bar Close in Pine Script Strategies Read More →

Based on my experience, PineScript strategies output appears to be quite limited. Performance is displayed by the plot and measured on a trade-by-trade basis. It is not uncommon that you want to see something that is not available by default. So it can get quite tricky to understand when the strategy works well and when How to Display Monthly Returns for PineScript Strategies? Read More →

You can receive this error by running this simple code: Add to Chart operation failed, reason: line 5: Value with NA type cannot be assigned to a variable that was defined without type keyword The issue is that PineScript doesn’t know what type should this variable be. It can’t guess the type from the NA How to fix “Value with NA type cannot be assigned to a variable that was defined without type keyword.” Read More →

Just recently TradingView added a possibility to plot nice tables on your chart from Pine Script. It’s a really nice way to present information for your indicators and strategies. In this article, I will show you a very simple example of how you can plot a table from PineScript. To create a table you can How to plot a table in PineScript? Read More →

You may have noticed the following warning message in your PineScript indicator scripts: The `transp` argument will be deprecated soon. We recommend using color.new() or color.rgb() functions to specify the transparency of the plots instead. Below is an example of code that causes this warning. Why does this error occur? This warning message occurs simply How to fix the `transp` argument will be deprecated soon error? Read More →

Sometimes you might want to display labels in TradingView for the future bars so they won’t intersect with the latest bars. Also, it might be useful to plot lines into the future as a projection. From first sight, it’s not obvious how to do that in PineScript. In this article, I will show you an How to Display Labels / Lines for the future bars in PineScript? Read More →

Quite often in TradingView, you might want to display labels at a specific time every day. It can be some information at day close, day open, premarket, etc. In this article, I will show you how you can exactly that. If you’ll just use the label.new function as is it will simply plot labels for How to Display Labels only at a specific time every day? Read More →

Sometimes vertical lines can be a pretty good way to display signals or other information for your indicators. In this article, I will show you how you can plot a vertical line for a custom TradingView indicator in Pine Script. You can do in just 1 line of code: You will see the following vertical How to Plot Vertical Lines in Pine Script? Read More →