SuperTrend - Indie Port Guide

ATR-based trend line that flips between an up-trend support and a down-trend resistance, with Buy/Sell labels.


Language	Indie Script v5
Platform	TakeProfit
Category	Trend
Type	Indicator, port from Pine Script
Original	SuperTrend by KivancOzbilgic (Pine Script v4)
License	not stated in the script header (open-source script published on TradingView)
Original source	SuperTrend.pinescript4
Source file	SuperTrend.indie5

Overview

SuperTrend places a trailing line at a distance of ATR times a multiplier from the source price (HL2 by default). While price stays above the line the trend is up and the line follows below price; when the close crosses it, the trend flips and the line jumps to the other side.

The port keeps the original options: ATR by Wilder’s smoothing or by a simple average of the true range, optional Buy/Sell signals and the trend highlighter.

How it works

Compute ATR over the chosen period (RMA-based, or SMA of the true range when the option is switched).
up = src - multiplier * atr, dn = src + multiplier * atr.
Ratchet the levels: the up level can only rise while the previous close is above it; the down level can only fall while the previous close is below it.
Trend starts at +1; it flips to +1 when the close is above the previous down level and to -1 when it is below the previous up level.
Plot the up line in an up-trend and the down line in a down-trend; mark a flip with Buy / Sell.

Parameters

Parameter	Type	Default	Range	Description
`periods`	int	10	≥ 1	ATR Period
`src`	source	source.HL2		Source
`multiplier`	float	3.0	≥ 0.1	ATR Multiplier
`change_atr`	bool	True		Change ATR Calculation Method
`show_signals`	bool	True		Show Buy/Sell Signals
`highlighting`	bool	True		Highlighting

Port notes

Differences and decisions in the Indie port (taken from the header of SuperTrend.indie5):

alertcondition() — no Indie equivalent; attach platform alerts to Buy/Sell markers instead
changeATR toggle — ported: true = Atr (RMA-based), false = Sma(Tr)

Verification

The plotted lines and the Buy/Sell signals were compared with the original script on the same candles (638 BTC 30-minute bars, 21 Sep - 5 Oct 2026, exported from TradingView). After a 300-bar warm-up both trend lines matched to 1.5e-11 of the price range (158 up-trend and 180 down-trend values) and the 9 Buy and 9 Sell labels fell on the same bars.

Full source code

Indie Script v5. Copy it into the platform’s script editor. The original Pine Script is published next to it as SuperTrend.pinescript4.

# indie:lang_version = 5
# SuperTrend — Indie port
# Original Pine Script by KivancOzbilgic (open-source script published on TradingView)
# Migration notes:
#   alertcondition() — no Indie equivalent; attach platform alerts to Buy/Sell markers instead
#   changeATR toggle — ported: true = Atr (RMA-based), false = Sma(Tr)

from math import nan, isnan
from indie import indicator, param, plot, MainContext, color, MutSeriesF, source, format
from indie.algorithms import Atr, Sma, Tr

@indicator('SuperTrend', overlay_main_pane=True, format=format.PRICE, precision=2)
@param.int('periods', default=10, min=1, title='ATR Period')
@param.source('src', default=source.HL2, title='Source')
@param.float('multiplier', default=3.0, min=0.1, step=0.1, title='ATR Multiplier')
@param.bool('change_atr', default=True, title='Change ATR Calculation Method')
@param.bool('show_signals', default=True, title='Show Buy/Sell Signals')
@param.bool('highlighting', default=True, title='Highlighting')
@plot.line('up_trend', color=color.GREEN, line_width=2, title='Up Trend')
@plot.line('dn_trend', color=color.RED, line_width=2, title='Down Trend')
@plot.line('mid', color=color.TRANSPARENT, line_width=1, title='OHLC4')
@plot.fill('up_trend', 'mid', id='up_fill')
@plot.fill('dn_trend', 'mid', id='dn_fill')
@plot.marker('buy_signal', color=color.GREEN, style=plot.marker_style.LABEL)
@plot.marker('sell_signal', color=color.RED, style=plot.marker_style.LABEL)
class Main(MainContext):
    def calc(self, periods, src, multiplier, change_atr, show_signals, highlighting):
        atr_rma: float = Atr.new(periods)[0]
        atr_sma: float = Sma.new(Tr.new(), periods)[0]
        atr_val: float = atr_rma if change_atr else atr_sma

        up_raw = src[0] - multiplier * atr_val
        up = MutSeriesF.new(nan)
        up_prev = up[1] if not isnan(up[1]) else up_raw
        up[0] = max(up_raw, up_prev) if self.close[1] > up_prev else up_raw

        dn_raw = src[0] + multiplier * atr_val
        dn = MutSeriesF.new(nan)
        dn_prev = dn[1] if not isnan(dn[1]) else dn_raw
        dn[0] = min(dn_raw, dn_prev) if self.close[1] < dn_prev else dn_raw

        trend = MutSeriesF.new(1.0)
        t_prev = trend[1] if not isnan(trend[1]) else 1.0
        if t_prev == -1.0 and self.close[0] > dn_prev:
            trend[0] = 1.0
        elif t_prev == 1.0 and self.close[0] < up_prev:
            trend[0] = -1.0
        else:
            trend[0] = t_prev

        t = trend[0]
        t1 = trend[1] if not isnan(trend[1]) else 1.0

        buy_signal = t == 1.0 and t1 == -1.0
        sell_signal = t == -1.0 and t1 == 1.0

        up_val = up[0] if t == 1.0 else nan
        dn_val = dn[0] if t == -1.0 else nan
        ohlc4 = (self.open[0] + self.high[0] + self.low[0] + self.close[0]) / 4.0

        up_fill_c = color.rgba(0, 200, 0, 0.25) if (highlighting and t == 1.0) else color.TRANSPARENT
        dn_fill_c = color.rgba(200, 0, 0, 0.25) if (highlighting and t == -1.0) else color.TRANSPARENT

        buy_val = up[0] if buy_signal and show_signals else nan
        sell_val = dn[0] if sell_signal and show_signals else nan

        return (
            plot.Line(up_val),
            plot.Line(dn_val),
            plot.Line(ohlc4),
            plot.Fill(up_fill_c),
            plot.Fill(dn_fill_c),
            plot.Marker(buy_val, text='Buy'),
            plot.Marker(sell_val, text='Sell'),
        )