This indicator detects equal highs and lows by comparing prices within user-defined left and right bars using a tolerance percentage. It plots horizontal lines on the price chart for equal highs in one color and lows in another. A screener allows input of mult
Indicator · Pine Script v5 · On the chart
Auto Diagonal Trendlines
This indicator draws diagonal trendlines from confirmed swing points on the price chart.
GitHub stars55on the repository
Pine versionv5runs as is
Lines of code27
Settings0inputs
LicenceApache-2.0
Last update6 months ago20 Apr 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
27 lines of Pine Script v5 from public/indicators/diagonal.pine, published under Apache-2.0. Keep the author's credit and licence lines when you reuse it.
//@version=5
indicator("Auto Diagonal Trendlines", overlay=true, max_lines_count=50)
len = 15
ph = ta.pivothigh(high, len, len)
pl = ta.pivotlow(low, len, len)
var float ph1 = na, var int pb1 = na
var float ph2 = na, var int pb2 = na
var float pl1 = na, var int lb1 = na
var float pl2 = na, var int lb2 = na
if not na(ph)
ph2 := ph1, pb2 := pb1
ph1 := ph, pb1 := bar_index[len]
if not na(ph2)
slope = (ph1 - ph2) / (pb1 - pb2)
line.new(pb2, ph2, pb1, ph1, color=color.red, width=2)
line.new(pb1, ph1, pb1 + 50, ph1 + slope * 50, color=color.red, width=1, style=line.style_dashed)
if not na(pl)
pl2 := pl1, lb2 := lb1
pl1 := pl, lb1 := bar_index[len]
if not na(pl2)
slope = (pl1 - pl2) / (lb1 - lb2)
line.new(lb2, pl2, lb1, pl1, color=color.green, width=2)
line.new(lb1, pl1, lb1 + 50, pl1 + slope * 50, color=color.green, width=1, style=line.style_dashed)
plot(close, color=color.new(color.white, 100))
Overview
Auto Diagonal Trendlines detects pivot highs and pivot lows using a fixed 15-bar lookback on each side. When a new pivot confirms, it connects the last two highs with a solid red line and the last two lows with a solid green line, then extends each slope 50 bars forward as a dashed line. There are no user inputs. Lines stay after they are drawn until the chart line limit is reached. Pivots appear only after confirmation, so recent swings lag by 15 bars.
- 15-bar pivot highs and lows
- Solid lines between consecutive pivots
- Dashed 50-bar slope extensions
- Red highs and green lows
- Price-chart overlay
Details
Published by
dcaoyuan on GitHub
Type
Draws
On the price chart
Category
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
aicharttradingvibepinescripttechnical-analysispinestock
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.
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