what is the correct set up for ohlcv source dir?

[lufengkuang]

In default template, "ohlcv_source_dir": null.

I suppose it can direct to an external source of ohlcv data, I tried many combinations but can't get it work.

I have npy files arranged by date that mimic the original ohlcv data.

[manibl]

ohlcv_source_dir: Optional path to a pre-populated OHLCV directory to use before hitting exchange archives. Expected structure:

//1m/<coin_or_symbol>/YYYY-MM-DD.npz or .npy. Coin keys are normalized to base coins, but CCXT-style symbol folder names are accepted (e.g., ETH_USDC:USDC)

PBGui use it for own market downloader

[lufengkuang]

ohlcv_source_dir: Optional path to a pre-populated OHLCV directory to use before hitting exchange archives. Expected structure:

//1m/<coin_or_symbol>/YYYY-MM-DD.npz or .npy. Coin keys are normalized to base coins, but CCXT-style symbol folder names are accepted (e.g., ETH_USDC:USDC)
PBGui use it for own market downloader

tried, but didn't work