talib library SAR function calculation results are inconsistent with retested K-line interface

Author: tt8604, Created: 2022-10-08 01:19:27, Updated:

Please ask why the SAR function calculations in the TALIB library, with arguments for ((2,20) or ((0.02,0.2)), cannot match the K-line calculations of the retest system, as shown below.

talib库SAR函数计算结果与回测K线界面显示不一致

Function parameters as shown above

talib库SAR函数计算结果与回测K线界面显示不一致

K-line calculated SAR value at 8.04 at 20 hours on 31 January 2021

talib库SAR函数计算结果与回测K线界面显示不一致

The same K line on the retest system K line graph with a SAR value of 7.84


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Inventors quantify - small dreamsSeveral prerequisites are required for comparing indicators from two different computational sources (e.g. in a graph and computed by a program): 1, the K-line data of the calculation indicator must be perfectly consistent and may be affected by K-line cycles. 2, indicator parameters. 3, indicator algorithm. There are also several factors to compare: 1, whether the indicator values of the contrast are on the same BAR on the same time frame, whether the BAR cycle is the same, whether the contrast varieties, contracts, etc. are consistent. 2, the contrast BAR is whether the state is complete. This kind of question is often raised and you can search for past posts.