class EMAVolume(Indicator):
def __init__(self, period, cache_size=None):
self._ema = EMA(period)
super().__init__({
'args': [period],
'id': 'emavol',
'name': 'EMA Vol(%f)' % period,
'seed_period': period,
'data_type': 'candle',
'data_key': '*',
'cache_size': cache_size
})
def reset(self):
super().reset()
self._ema.reset()
def update(self, candle):
self._ema.update(candle['vol'])
ema = self._ema.v()
if isfinite(ema):
super().update(ema)
return self.v()
def add(self, candle):
self._ema.add(candle['vol'])
ema = self._ema.v()
if isfinite(ema):
super().add(ema)
return self.v()
class ChaikinOsc(Indicator):
def __init__(self, short, long, cache_size=None):
self._shortEMA = EMA(short, cache_size)
self._longEMA = EMA(long, cache_size)
self._adl = AccumulationDistribution()
super().__init__({
'args': [short, long, cache_size],
'id': 'chaikinosc',
'name': 'ChaikinOsc(%f, %f)' % (short, long),
'seed_period': max([short, long]),
'data_type': 'candle',
'data_key': '*',
'cache_size': cache_size
})
def reset(self):
super().reset()
self._shortEMA.reset()
self._longEMA.reset()
self._adl.reset()
def update(self, candle):
self._adl.update(candle)
adl = self._adl.v()
if not isfinite(adl):
return
self._shortEMA.update(adl)
self._longEMA.update(adl)
short = self._shortEMA.v()
long = self._longEMA.v()
if (isfinite(short) and isfinite(long)):
super().update(short - long)
return self.v()
def add(self, candle):
self._adl.add(candle)
adl = self._adl.v()
if not isfinite(adl):
return
self._shortEMA.add(adl)
self._longEMA.add(adl)
short = self._shortEMA.v()
long = self._longEMA.v()
if (isfinite(short) and isfinite(long)):
super().add(short - long)
return self.v()
class VO(Indicator):
def __init__(self, args=[]):
[shortPeriod, longPeriod] = args
self._shortEMA = EMA([shortPeriod])
self._longEMA = EMA([longPeriod])
super().__init__({
'args': args,
'id': 'vo',
'name': 'VO(%f, %f)' % (shortPeriod, longPeriod),
'seed_period': longPeriod,
'data_type': 'candle',
'data_key': '*'
})
def reset(self):
super().reset()
self._shortEMA.reset()
self._longEMA.reset()
def update(self, candle):
vol = candle['vol']
self._shortEMA.update(vol)
self._longEMA.update(vol)
short = self._shortEMA.v()
long = self._longEMA.v()
if long == 0:
return super().update(0)
return super().update(((short - long) / long) * 100)
def add(self, candle):
vol = candle['vol']
self._shortEMA.add(vol)
self._longEMA.add(vol)
short = self._shortEMA.v()
long = self._longEMA.v()
if long == 0:
return super().add(0)
return super().add(((short - long) / long) * 100)
class MassIndex(Indicator):
def __init__(self, args=[]):
[period] = args
self._smoothing = period
self._singleEMA = EMA([9])
self._doubleEMA = EMA([9])
self._buffer = []
super().__init__({
'args': args,
'id': 'mi',
'name': 'Mass Index(%f)' % period,
'seed_period': 9 + period,
'data_type': 'candle',
'data_key': '*'
})
def reset(self):
super().reset()
self._singleEMA.reset()
self._doubleEMA.reset()
self._buffer = []
def update(self, candle):
high = candle['high']
low = candle['low']
self._singleEMA.update(high - low)
self._doubleEMA.update(self._singleEMA.v())
if len(self._buffer) == 0:
self._buffer.append(self._singleEMA.v() / self._doubleEMA.v())
else:
self._buffer[-1] = self._singleEMA.v() / self._doubleEMA.v()
if len(self._buffer) < self._smoothing:
return self.v()
return super().update(sum(self._buffer))
def add(self, candle):
high = candle['high']
low = candle['low']
self._singleEMA.add(high - low)
self._doubleEMA.add(self._singleEMA.v())
self._buffer.append(self._singleEMA.v() / self._doubleEMA.v())
if len(self._buffer) > self._smoothing:
del self._buffer[0]
elif len(self._buffer) < self._smoothing:
return self.v()
return super().add(sum(self._buffer))
class TRIX(Indicator):
def __init__(self, args = []):
[ period ] = args
self._emaFirst = EMA([period])
self._emaSecond = EMA([period])
self._emaThird = EMA([period])
super().__init__({
'args': args,
'id': 'trix',
'name': 'TRIX(%f)' % (period),
'seed_period': (period * 3) + 1
})
def reset(self):
super().reset()
self._emaFirst.reset()
self._emaSecond.reset()
self._emaThird.reset()
def update(self, v):
self._emaFirst.update(v)
self._emaSecond.update(self._emaFirst.v())
self._emaThird.update(self._emaSecond.v())
curr = self._emaThird.v()
if not isfinite(curr) or self._emaThird.l() < 2:
return self.v()
prev = self._emaThird.prev()
return super().update(((curr / prev) - 1) * 10000)
def add(self, v):
self._emaFirst.add(v)
self._emaSecond.add(self._emaFirst.v())
self._emaThird.add(self._emaSecond.v())
curr = self._emaThird.v()
if not isfinite(curr) or self._emaThird.l() < 2:
return self.v()
prev = self._emaThird.prev()
return super().add(((curr / prev) - 1) * 10000)
class PPO(Indicator):
def __init__(self, args=[]):
[shortPeriod, longPeriod] = args
self._shortEMA = EMA([shortPeriod])
self._longEMA = EMA([longPeriod])
self._signalEMA = EMA([9])
super().__init__({
'args': args,
'id': 'ppo',
'name': 'PPO(%f, %f)' % (shortPeriod, longPeriod),
'seed_period': longPeriod
})
def reset(self):
super().reset()
self._shortEMA.reset()
self._longEMA.reset()
self._signalEMA.reset()
def update(self, v):
self._shortEMA.update(v)
self._longEMA.update(v)
short = self._shortEMA.v()
long = self._longEMA.v()
ppo = 0 if long == 0 else ((short - long) / long) * 100
self._signalEMA.update(ppo)
return super().update(self._signalEMA.v())
def add(self, v):
self._shortEMA.add(v)
self._longEMA.add(v)
short = self._shortEMA.v()
long = self._longEMA.v()
ppo = 0 if long == 0 else ((short - long) / long) * 100
self._signalEMA.add(ppo)
return super().add(self._signalEMA.v())
class PPO(Indicator):
def __init__(self, shortPeriod, longPeriod, cache_size=None):
self._shortEMA = EMA(shortPeriod, cache_size)
self._longEMA = EMA(longPeriod, cache_size)
self._signalEMA = EMA(9, cache_size)
super().__init__({
'args': [shortPeriod, longPeriod, cache_size],
'id': 'ppo',
'name': 'PPO(%f, %f)' % (shortPeriod, longPeriod),
'seed_period': longPeriod,
'cache_size': cache_size
})
def reset(self):
super().reset()
self._shortEMA.reset()
self._longEMA.reset()
self._signalEMA.reset()
def update(self, v):
self._shortEMA.update(v)
self._longEMA.update(v)
short = self._shortEMA.v()
long = self._longEMA.v()
ppo = 0 if long == 0 else ((short - long) / long) * 100
self._signalEMA.update(ppo)
return super().update(self._signalEMA.v())
def add(self, v):
self._shortEMA.add(v)
self._longEMA.add(v)
short = self._shortEMA.v()
long = self._longEMA.v()
ppo = 0 if long == 0 else ((short - long) / long) * 100
self._signalEMA.add(ppo)
return super().add(self._signalEMA.v())
class RSI(Indicator):
def __init__(self, period, cache_size=None):
self._p = period
self._uEMA = EMA(period, cache_size)
self._dEMA = EMA(period, cache_size)
self._prevInputValue = None
super().__init__({
'args': [period, cache_size],
'id': 'rsi',
'name': 'RSI(%f)' % (period),
'seed_period': period,
'cache_size': cache_size
})
def reset(self):
super().reset()
self._prevInputValue = None
self._uEMA.reset()
self._dEMA.reset()
def _ud(self, v):
delta = 0
if self._prevInputValue is None:
delta = v - self._prevInputValue
return {
'u': delta if delta > 0 else 0,
'd': -delta if delta < 0 else 0
}
def _rs(self):
uAvg = self._uEMA.v()
dAvg = self._dEMA.v()
if not isfinite(uAvg) or not isfinite(dAvg) or dAvg == 0:
return None
else:
return uAvg / dAvg
def update(self, v):
if self._prevInputValue is None:
return
ud = self._ud(v)
self._uEMA.update(ud['u'])
self._dEMA.update(ud['d'])
rs = self._rs()
if rs is not None:
super().update(100 - (100 / (1 + rs)))
return self.v()
def add(self, v):
if self._prevInputValue is None:
self._prevInputValue = v
ud = self._ud(v)
self._uEMA.add(ud['u'])
self._dEMA.add(ud['d'])
rs = self._rs()
if rs is not None:
super().add(100 - (100 / (1 + rs)))
self._prevInputValue = v
return self.v()
class RVI(Indicator):
def __init__(self, period, cache_size=None):
self._stddev = StdDeviation(period, cache_size)
self._uEMA = EMA(period, cache_size)
self._dEMA = EMA(period, cache_size)
self._prevInputValue = None
super().__init__({
'args': [period, cache_size],
'id': 'rvi',
'name': 'RVI(%f)' % period,
'seed_period': period,
'cache_size': cache_size
})
def reset(self):
super().reset()
self._prevInputValue = None
self._stddev.reset()
self._uEMA.reset()
self._dEMA.reset()
def ud(candlePrice, prevCandlePrice, stddev):
if prevCandlePrice is None:
return [0, 0]
elif candlePrice > prevCandlePrice:
return [stddev, 0]
elif candlePrice < prevCandlePrice:
return [0, stddev]
else:
return [0, 0]
def update(self, v):
if self._prevInputValue is None:
return self.v()
self._stddev.update(v)
stddev = self._stddev.v()
if not isfinite(stddev):
return self.v()
[u, d] = RVI.ud(v, self._prevInputValue, stddev)
self._uEMA.update(u)
self._dEMA.update(d)
uSum = self._uEMA.v()
dSum = self._dEMA.v()
if uSum == dSum:
return super().update(0)
else:
return super().update(100 * (uSum / (uSum + dSum)))
def add(self, v):
if self._prevInputValue is None:
self._prevInputValue = v
return self.v()
self._stddev.add(v)
stddev = self._stddev.v()
if not isfinite(stddev):
return self.v()
[u, d] = RVI.ud(v, self._prevInputValue, stddev)
self._uEMA.add(u)
self._dEMA.add(d)
uSum = self._uEMA.v()
dSum = self._dEMA.v()
if uSum == dSum:
super().add(0)
else:
super().add(100 * (uSum / (uSum + dSum)))
self._prevInputValue = v
return self.v()
class TSI(Indicator):
def __init__(self, long, short, signal, cache_size=None):
self._pcEMA = EMA(long, cache_size)
self._pc2EMA = EMA(short, cache_size)
self._apcEMA = EMA(long, cache_size)
self._apc2EMA = EMA(short, cache_size)
self._sEMA = EMA(signal, cache_size)
self._lastPrice = None
super().__init__({
'args': [short, signal, cache_size],
'id': 'tsi',
'name': 'TSI(%f, %f, %f)' % (long, short, signal),
'seed_period': max([long, short, signal]),
'cache_size': cache_size
})
def reset(self):
super().reset()
self._pcEMA.reset()
self._pc2EMA.reset()
self._apcEMA.reset()
self._apc2EMA.reset()
self._sEMA.reset()
self._lastPrice = None
def update(self, v):
if self._lastPrice is None:
return self.v()
pc = v - self._lastPrice
apc = abs(v - self._lastPrice)
self._pcEMA.update(pc)
self._apcEMA.update(apc)
if self._pcEMA.ready():
self._pc2EMA.update(self._pcEMA.v())
else:
return self.v()
if self._apcEMA.ready():
self._apc2EMA.update(self._apcEMA.v())
else:
return self.v()
if not self._pc2EMA.ready() or not self._apc2EMA.ready():
return self.v()
tsi = 100 * (self._pc2EMA.v() / self._apc2EMA.v())
self._sEMA.update(tsi)
return super().update({'v': tsi, 'signal': self._sEMA.v()})
def add(self, v):
if self._lastPrice is None:
self._lastPrice = v
return self.v()
pc = v - self._lastPrice
apc = abs(v - self._lastPrice)
self._pcEMA.add(pc)
self._apcEMA.add(apc)
if self._pcEMA.ready():
self._pc2EMA.add(self._pcEMA.v())
else:
return self.v()
if self._apcEMA.ready():
self._apc2EMA.add(self._apcEMA.v())
else:
return self.v()
if not self._pc2EMA.ready() or not self._apc2EMA.ready():
return self.v()
tsi = 100 * (self._pc2EMA.v() / self._apc2EMA.v())
self._sEMA.add(tsi)
super().add({'v': tsi, 'signal': self._sEMA.v()})
self._lastPrice = v
return self.v()