Data Downloading

Getting data for backtesting and hyperopt

To download data (candles / OHLCV) needed for backtesting and hyperoptimization use the freqtrade download-data command.

If no additional parameter is specified, freqtrade will download data for "1m" and "5m" timeframes for the last 30 days. Exchange and pairs will come from config.json (if specified using -c/--config). Otherwise --exchange becomes mandatory.

!!! Tip Updating existing data If you already have backtesting data available in your data-directory and would like to refresh this data up to today, use --days xx with a number slightly higher than the missing number of days. Freqtrade will keep the available data and only download the missing data. Be carefull though: If the number is too small (which would result in a few missing days), the whole dataset will be removed and only xx days will be downloaded.

Pairs file

In alternative to the whitelist from config.json, a pairs.json file can be used.

If you are using Binance for example:

create a directory user_data/data/binance and copy or create the pairs.json file in that directory.
update the pairs.json file to contain the currency pairs you are interested in.

mkdir -p user_data/data/binance
cp freqtrade/tests/testdata/pairs.json user_data/data/binance

The format of the pairs.json file is a simple json list. Mixing different stake-currencies is allowed for this file, since it's only used for downloading.

[
    "ETH/BTC",
    "ETH/USDT",
    "BTC/USDT",
    "XRP/ETH"
]

start download

Then run:

freqtrade download-data --exchange binance

This will download ticker data for all the currency pairs you defined in pairs.json.

Other Notes

To use a different directory than the exchange specific default, use --datadir user_data/data/some_directory.
To change the exchange used to download the tickers, please use a different configuration file (you'll probably need to adjust ratelimits etc.)
To use pairs.json from some other directory, use --pairs-file some_other_dir/pairs.json.
To download ticker data for only 10 days, use --days 10 (defaults to 30 days).
Use --timeframes to specify which tickers to download. Default is --timeframes 1m 5m which will download 1-minute and 5-minute tickers.
To use exchange, timeframe and list of pairs as defined in your configuration file, use the -c/--config option. With this, the script uses the whitelist defined in the config as the list of currency pairs to download data for and does not require the pairs.json file. You can combine -c/--config with most other options.

Next step

Great, you now have backtest data downloaded, so you can now start backtesting your strategy.

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