Techan
TechAn is a technical analysis library for Go! It provides a suite of tools and frameworks to analyze financial data and make trading decisions.
Features
- Basic and advanced technical analysis indicators
- Profit and trade analysis
- Strategy building
Installation
$ go get github.com/sdcoffey/techan
Quickstart
series := techan.NewTimeSeries()
// fetch this from your preferred exchange
dataset := [][]string{
// Timestamp, Open, Close, High, Low, volume
{"1234567", "1", "2", "3", "5", "6"},
}
for _, datum := range dataset {
start, _ := strconv.ParseInt(datum[0], 10, 64)
period := techan.NewTimePeriod(time.Unix(start, 0), time.Hour*24)
candle := techan.NewCandle(period)
candle.OpenPrice = big.NewFromString(datum[1])
candle.ClosePrice = big.NewFromString(datum[2])
candle.MaxPrice = big.NewFromString(datum[3])
candle.MinPrice = big.NewFromString(datum[4])
series.AddCandle(candle)
}
closePrices := techan.NewClosePriceIndicator(series)
movingAverage := techan.NewEMAIndicator(closePrices, 10) // Create an exponential moving average with a window of 10
fmt.Println(movingAverage.Calculate(0).FormattedString(2))
Creating trading strategies
indicator := techan.NewClosePriceIndicator(series)
// record trades on this object
record := techan.NewTradingRecord()
entryConstant := techan.NewConstantIndicator(30)
exitConstant := techan.NewConstantIndicator(10)
// Is satisfied when the price ema moves above 30 and the current position is new
entryRule := techan.And(
techan.NewCrossUpIndicatorRule(entryConstant, indicator),
techan.PositionNewRule{})
// Is satisfied when the price ema moves below 10 and the current position is open
exitRule := techan.And(
techan.NewCrossDownIndicatorRule(indicator, exitConstant),
techan.PositionOpenRule{})
strategy := techan.RuleStrategy{
UnstablePeriod: 10, // Period before which ShouldEnter and ShouldExit will always return false
EntryRule: entryRule,
ExitRule: exitRule,
}
strategy.ShouldEnter(0, record) // returns false
Credits
Techan is heavily influenced by the great ta4j. Many of the ideas and frameworks in this library owe their genesis to the great work done over there.
License
Techan is released under the MIT license. See LICENSE for details.