This indicator plots the Schaff Trend Cycle in a separate pane. It subtracts a slow exponential moving average from a fast one, applies a stochastic cycle twice, and smooths each result to form a 0–100 oscillator. Line color follows the slope, or the upper and
Indicator · Pine Script v6 · Own pane
PTA - Ehlers Precision Trend Analysis
Ehlers Precision Trend Analysis extracts trend direction using a dual high-pass filter bandpass approach.
GitHub stars99on the repository
Pine versionv6current
Lines of code37
Settings2inputs
LicenceApache-2.0
Last update4 weeks ago27 Sep 2026
Add It to Your TradingView Chart
- 1Copy the scriptPress Copy script above, or the copy button on the code below.
- 2Open the Pine EditorOpen a TradingView chart and choose Pine Editor at the bottom of the screen.
- 3Paste over the templateCreate a new indicator, select all of the template text and paste. Press Save and give it a name.
- 4Add it to the chartPress Add to chart, then adjust the settings with the gear icon next to its name.
Source Code
37 lines of Pine Script v6 from lib/dynamics/pta/pta.pine, published under Apache-2.0. Keep the author's credit and licence lines when you reuse it.
// PTA: Ehlers Precision Trend Analysis
// Category: Dynamics
// Based on: John F. Ehlers, "Precision Trend Analysis," TASC September 2024
//
// Dual highpass filter bandpass approach for near-zero-lag trend extraction.
// Trend = HP(longPeriod) - HP(shortPeriod)
// where HP is a 2-pole Butterworth highpass filter.
// Preserves cyclic components between shortPeriod and longPeriod.
// Output: zero-centered, positive = uptrend, negative = downtrend.
//@version=6
indicator("PTA - Ehlers Precision Trend Analysis", shorttitle="PTA", overlay=false)
// ── Inputs ──────────────────────────────────────────────────────
int longPeriod = input.int(250, "Long Period", minval=3)
int shortPeriod = input.int(40, "Short Period", minval=2)
// ── Highpass Filter Function ────────────────────────────────────
highpass(float src, float period) =>
float a1 = math.exp(-1.414 * math.pi / period)
float b1 = 2.0 * a1 * math.cos(1.414 * math.pi / period)
float c2 = b1
float c3 = -a1 * a1
float c1 = (1.0 + c2 - c3) * 0.25
float hp = 0.0
if bar_index >= 2
hp := c1 * (src - 2.0 * src[1] + src[2]) + c2 * nz(hp[1]) + c3 * nz(hp[2])
hp
// ── Calculations ────────────────────────────────────────────────
float hp1 = highpass(close, longPeriod)
float hp2 = highpass(close, shortPeriod)
float trend = hp1 - hp2
// ── Plots ───────────────────────────────────────────────────────
plot(trend, "PTA", color.red, 2)
hline(0, "Zero", color.gray, hline.style_dotted)
Overview
PTA - Ehlers Precision Trend Analysis calculates two 2-pole Butterworth high-pass filters on close prices using configurable long and short periods, subtracting the shorter filter from the longer filter to isolate cyclic activity. The script plots a zero-centered line in a separate pane along with a horizontal zero reference line. Values above zero indicate an uptrend, while values below zero indicate a downtrend.
- Two-pole Butterworth high-pass filtering
- Dual high-pass bandpass trend extraction
- Zero-centered trend line plot
- Configurable short and long filter periods
Details
Published by
mihakralj on GitHub
Type
Indicator, Pine Script v6
Draws
Separate pane below the chart
Category
Trend, Oscillators & momentum
Markets
Any symbol
Timeframes
Any timeframe
Risk Notes
No repainting, lookahead or stacked entries were found in its code or README. That says nothing about how well it works: test it first.
Topics
algorithmic-tradingcsharpdotnetpinescriptpythonquantitative-financesimdta-libtechnical-analysistechnical-indicators
Settings
The inputs you can change from the gear icon on the chart. Defaults are the author's.
| Setting | Type | Default | Variable |
|---|---|---|---|
| Long Period | int | 250 | longPeriod |
| Short Period | int | 40 | shortPeriod |
Third-party code. ForexR did not write, test or endorse this script, and the summary above was generated automatically from its code and README. Indicators describe the past, and a strategy's backtest can look better than live trading, especially when a script repaints. Check it in the Strategy Tester and on a demo account before you rely on it.
Similar Pine Scripts
This indicator calculates a modified MACD oscillator and signal line alongside a trend EMA filter, plotting the output as a stylized column histogram in a separate pane. Instead of plotting true MACD distance, it quantifies positive and negative histogram mome
This indicator plots the Average Directional Index in a separate pane and colors the line teal or maroon according to whether plus DI is above minus DI. A horizontal key level and a silver background mark periods when ADX exceeds that threshold. With labels en
Standardized Trend Map calculates series momentum relative to active price range across 40 distinct lookback periods ranging from 2 to 80 bars on an exponential moving average source. Each standardized calculation rounds to an integer values of -1, 0, or 1 to
This indicator calculates and displays the Average Directional Index (ADX) as a column histogram in a separate pane. It evaluates market trend strength by calculating directional movement metrics based on specified smoothing and DI length inputs. When the ADX
Multi-Timeframe Analysis Suite calculates trend direction and momentum conditions across five user-selected timeframes using moving averages, RSI, and Stochastic oscillators. It evaluates moving average slope and oscillator levels to compute trend alignment, m
Trade Your Charts With a Regulated Broker
Compare brokers that connect to TradingView, with spreads, minimum deposits and leverage side by side.
Compare brokers