Documentation for Deptle Terminal.

Declare an indicator as a class field, then update it inside on_tick.

• Four indicators are built in: RollingMean and RSI for whole numbers; RollingMeanF32 and RSIF32 for decimals.
• Write sma = RollingMean(window=20) with a fixed whole number, or window=fast with the name of an int Parameter whose min, default, and max are all above 0.
• Two other spellings compile: the annotated form sma: RollingMean = RollingMean(window=...) and the legacy sma: RollingMean = State(window=...).

1class Cross(Strategy):
2    w: int = Parameter(default=20, min=2, max=200)   # tunable window
3    sma = RollingMean(window=w)                       # window from the parameter
4    rsi = RSI(window=14)                              # or a fixed window
5
6    def on_tick(self, tick):
7        m = self.sma.update(tick.price)               # feed the price, read the average
8        r = self.rsi.update(tick.price)               # feed the price, read RSI (0..100)
9        if tick.price > m and r < 30:                 # above the average and oversold
10            return Order.Buy(quantity=1)
11        return Order.Hold()

Call self.<name>.update(value) for the indicator's next value.

• Whole-number indicators (RollingMean, RSI) take whole-number input.
• Decimal indicators (RollingMeanF32, RSIF32) take decimals; other numbers convert in.
• Calling .update(...) on something that is not an indicator is a compile error.

Indicators keep their state between updates.

• RSI and RSIF32 return a neutral 50 until they have seen a full window, and when there is no downward movement to divide by.
• RollingMean and RollingMeanF32 average whatever they have so far during warmup.
• Window values are clamped into valid bounds at runtime.