They were originally intended to toggle the chart zoom width to a week, month, or the entire backtest range. I don't know when they stopped working but we'll look into it, thanks for bringing it to our attention!
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Thank you ! I assumed that was what they were for, but thought that perhaps they were doing something in the background to my backtest data. Id like to see them functioning, I'm trying to work out a bug that pops up after 3-4 years of backtesting from 2006 on one of my algorithms. It utilizes some machine learning, so when isolating and backtesting the problem area, it doesn't make the exact same decisions. It may not help a lot, but being able to view the algorithms individual statistics over a smaller period of time (from a larger backtest) could provide me (and perhaps others) with insights that may stimulate some solutions.
I don't know if you intended the backtests statistics (...sortino, alpha, beta...) to also be reflected by the period change, but if not, consider adding that function as well :)
The material on this website is provided for informational purposes only and does not constitute an offer to sell, a solicitation to buy, or a recommendation or endorsement for any security or strategy, nor does it constitute an offer to provide investment advisory services by Quantopian.
In addition, the material offers no opinion with respect to the suitability of any security or specific investment. No information contained herein should be regarded as a suggestion to engage in or refrain from any investment-related course of action as none of Quantopian nor any of its affiliates is undertaking to provide investment advice, act as an adviser to any plan or entity subject to the Employee Retirement Income Security Act of 1974, as amended, individual retirement account or individual retirement annuity, or give advice in a fiduciary capacity with respect to the materials presented herein. If you are an individual retirement or other investor, contact your financial advisor or other fiduciary unrelated to Quantopian about whether any given investment idea, strategy, product or service described herein may be appropriate for your circumstances. All investments involve risk, including loss of principal. Quantopian makes no guarantees as to the accuracy or completeness of the views expressed in the website. The views are subject to change, and may have become unreliable for various reasons, including changes in market conditions or economic circumstances.