When backtesting in Single-Position mode, it would be nice if WL checked the Data Manager cache first before timing out on IQFeed for a mutual fund that's cached and linked to a Yahoo dataset. This is about running individual funds in Single-Position mode out of the Yahoo-linked Fidelity Select Sector funds dataset.
Everything works as expected in Portfolio-Backtest mode; no IQFeed timeouts encountered in this mode.
Everything works as expected in Portfolio-Backtest mode; no IQFeed timeouts encountered in this mode.
Rename
I thought's been explained in Post #5:
https://www.wealth-lab.com/Discussion/IQFeed-timeouts-on-Yahoo-quot-world-indices-quot-datasets-6812
Unless your single symbol backtest is run on the "Fidelity select sector funds" DataSet, an on demand data request is made and Wealth-Lab queries checked (enabled) data providers from top to bottom. Since the topmost one is IQFeed, you get a timeout from requesting an unsupported symbol.
It does not matter that the mutual funds reside in a Yahoo-linked DataSet - there is no DataSet context here in single symbol mode.
https://www.wealth-lab.com/Discussion/IQFeed-timeouts-on-Yahoo-quot-world-indices-quot-datasets-6812
Unless your single symbol backtest is run on the "Fidelity select sector funds" DataSet, an on demand data request is made and Wealth-Lab queries checked (enabled) data providers from top to bottom. Since the topmost one is IQFeed, you get a timeout from requesting an unsupported symbol.
It does not matter that the mutual funds reside in a Yahoo-linked DataSet - there is no DataSet context here in single symbol mode.
QUOTE:
It does not matter that the mutual funds reside in a Yahoo-linked DataSet - there is no DataSet context here in single symbol mode.
So what's the point in having the Data Manager cache if single-symbol mode ignores it altogether? These timeouts are for cached data.
The point of it is to re use the same data for multiple backtests until you change the data selection. Switching modes clears out that cache and forces a reload.
QUOTE:Interesting. I'm wondering if that's a good thing or a bad thing?
Switching modes clears out that cache and forces a reload.
In any case, thank you for the clarification. Sounds like it's operating as designed.
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