Automatic Wedge Pattern Detector for ThinkorSwim


Staff member
For fans of pure price action patterns. This indicator helps to identify and spot potential wedge patterns on your chart. This was put together by @korygill.



The yellow arrows (up and down) suggested that there is a potential wedge pattern within the last 4 bars (including the candle with the arrows). White arrows (which are rare suggest there may be a wedge pattern within the last 5 bars). You can easily use this indicator with the scanner.

thinkScript Code

# Price Action Wedge Patterns
# Include Four and Five Bar Wedges
# Developed based on idea from BenTen of
# Study to indicate when a wedge may be forming.
# Author: Kory Gill, @korygill
# Version 1.0

declare upper;
declare once_per_bar;

input aggregationPeriod = AggregationPeriod.DAY;
def open = open(period = aggregationPeriod);
def high = high(period = aggregationPeriod);
def low = low(period = aggregationPeriod);
def close = close(period = aggregationPeriod);

def vHigh = high;
def vLow = low;
def nan = Double.NaN;

def range = vHigh - vLow;
def isInsideBar = if range < range[1] and vHigh < vHigh[1] and vLow > vLow[1]
                  then 1
                  else 0;

# Define 4 Bars Wedge
def FourBarsWedges = high < high[3] and high[0] < high[3] and high[1] < high[3] and high[2] < high[3] and
low > low[3] and low[0] > low[3] and low[1] > low[3] and low[2] > low[3];
plot up4 = FourBarsWedges;
plot down4 = FourBarsWedges;

# Define 5 Bars Wedge
def FiveBarsWedges = high < high[4] and high[1] < high[4] and high[2] < high[4] and high[3] < high[4] and
low > low[4] and low[1] > low[4] and low[2] > low[4] and low[3] > low[4];
plot up5 = FiveBarsWedges;
plot down5 = FiveBarsWedges;
Last edited:


New member
Will this chart actually show the lines like that or just the arrows? I just installed it and I see neither. Actually I do see the arrows but its from 10 days back. Thanks!


Active member
def FiveBarsWedges = high < high[4] and high[1] < high[4] and high[2] < high[4] and high[3] < high[4] and
low > low[4] and low[1] > low[4] and low[2] > low[4] and low[3] > low[4];
plot up5 = FourBarsWedges;
plot down5 = FourBarsWedges;

Is this correct plot up5 = fourbarswedge. should it not be fivebarwedge


New member
trying to test this out but im not sure what went wrong?
i dont see the wedge drawing but the arrows are there.
any guidance on what settings should i change?



New member
Hi Everyone, brand new to the forum and my coding experience pretty much non existent. I did a search and may have missed it, but @BenTen any tips on how I can take this code and make it into a watchlist column to alert me right when the yellow/white arrows are triggered? I have it in a column now but it is just showing a NaN in the column. I am assuming it is not formatted correctly.

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