When I construct continuous futures data (Wheat futures for example), I get different results than barchart or tradingview. Examples below. The 1st image is my adjusted continuous data and the 2nd image is Tradingview's continuous futures chart.
The method that I use is the following:
When, however, I do not adjust the data it yields the following chart which now looks more like Tradingview's chart:
The thing is that I see a lot of unadjusted charts (I presume) thrown around from different analysts who use barchart or tradingview.
The problem comes when backtesting seasonality patterns for example. As in my adjusted data it seems that the market is trending down until mid 2019, but when looking at tradingview's it trends slightly up.
Or is there something wrong in the approach that I am using (like the back-adjustment method)?