Double Exponential SmoothingSingle Exponential Smoothing ( ema ) does not excel in following the data when there is a trend. This situation can be improved by the introduction of a second equation with a second constant gamma .
The gamma constant cant be lower than 0 and cant be greater than 1, higher values of gamma create less lag while preserving smoothness.Higher values of length must be followed by higher values of gamma in order to keep the lag low.
The first smoothing part consist of a classic ema but we add s-s1 to the previous smoothed value, this will help decrease lag.The second smoothing part then updates the trend, which is expressed as the difference between the last two values.
Filter
Finite Impulse Response (FIR) FilterFinite Impulse Response (FIR) Filter indicator script.
This indicator was originally developed by John F. Ehlers (Stocks & Commodities V. 20:7 (26-31): Zero-Lag Data Smoothers).
NOTE: Ehlers' favorite FIR filter had 1, 2, 3, 3, 2, 1, 0 coefficients.
Recursive Median FilterRecursive Median Filter indicator script.
This indicator was originally developed by John F. Ehlers (Stocks & Commodities V. 36:03 (8–11): Recursive Median Filters).
Vertical Horizontal Filter BacktestVertical Horizontal Filter was initiated by Adam White. It was first published
in a magazine called “Issues of Futures” in August, 1991. The Vertical Horizontal
Filter (VHF) is a very common Indicator used by traders to find out the Phase of
a Price Trend. Normally, a price trend can be in a Trending Phase or a Congestion
Phase/Choppy Movement Phase. Adam White created this particular Technical Indicator
to determine whether prices are trending in a particular direction or are they going
through a transitional period. He used it to measure the range of Futures available
in the market.
You can change long to short in the Input Settings
WARNING:
- For purpose educate only
- This script to change bars colors.
Vertical Horizontal Filter Strategy Vertical Horizontal Filter was initiated by Adam White. It was first published
in a magazine called “Issues of Futures” in August, 1991. The Vertical Horizontal
Filter (VHF) is a very common Indicator used by traders to find out the Phase of
a Price Trend. Normally, a price trend can be in a Trending Phase or a Congestion
Phase/Choppy Movement Phase. Adam White created this particular Technical Indicator
to determine whether prices are trending in a particular direction or are they going
through a transitional period. He used it to measure the range of Futures available
in the market.
WARNING:
- This script to change bars colors.
Above Below EMA OscillatorGives you an average of which side of the EMA price has close without the noise of the chart. Useful for measuring trend strength or as a trade filter (eg. only go long if above / below)
Rocket RSIRocket RSI indicator script.
This indicator was originally developed by John Ehlers (Stocks & Commodities V.36:6, RocketRSI - A Solid Propellant For Your Rocket Science Trading).
Infinite Impulse Response (IIR) FilterInfinite Impulse Response (IIR) Filter indicator script.
This indicator was originally developed by John Ehlers (Stocks & Commodities V. 20:7 (26-31): Zero-Lag Data Smoothers).
Auto-FilterA least squares filter using the Auto line as source, practical for noise removal without higher phase shift.
Its possible to create another parameter for the auto-line length, just add a parameter Period or whatever you want.
r = round(close/round)*round
dev = stdev(close,Period)
Hope you enjoy :)
Auto-LineAn indicator inspired by the Renko chart.Instead of using a static box size we use standard deviation, this make the indicator more reactive to the market state.
If the indicator show no values then you have to round the price to the nearest integer, for that use the round parameter.
Hope you enjoy :)
Gaussian Channel [DW]This study is an experiment utilizing the Ehlers Gaussian Filter technique combined with lag reduction techniques and true range to analyze trend activity.
Gaussian filters, as Ehlers explains it, are simply exponential moving averages applied multiple times.
First, beta and alpha are calculated based on the sampling period and number of poles specified. The maximum number of poles available in this script is 9.
Next, the data being analyzed is given a truncation option for reduced lag, which can be enabled with "Reduced Lag Mode".
Then the alpha and source values are used to calculate the filter and filtered true range of the dataset.
Filtered true range with a specified multiplier is then added to and subtracted from the filter, generating a channel.
Lastly, a one pole filter with a N pole alpha is averaged with the filter to generate a faster filter, which can be enabled with "Fast Response Mode".
Custom bar colors are included.
Note: Both the sampling period and number of poles directly affect how much lag the indicator has, and how smooth the output is.
Larger inputs will result in smoother outputs with increased lag, and smaller inputs will have noisier outputs with reduced lag.
For the best results, I recommend not setting the sampling period any lower than the number of poles + 1. Going lower truncates the equation.
Vertical Horizontal FilterVertical Horizontal Filter indicator script. This indicator was originally developed by Adam White.
Laguerre FilterLaguerre Filter indicator based on the John Ehler's article "Time Warp – Without Space Travel" about the Laguerre Transform
Vertical Horizontal Filter Vertical Horizontal Filter was initiated by Adam White. It was first published
in a magazine called “Issues of Futures” in August, 1991. The Vertical Horizontal
Filter (VHF) is a very common Indicator used by traders to find out the Phase of
a Price Trend. Normally, a price trend can be in a Trending Phase or a Congestion
Phase/Choppy Movement Phase. Adam White created this particular Technical Indicator
to determine whether prices are trending in a particular direction or are they going
through a transitional period. He used it to measure the range of Futures available
in the market.
Laguerre Multi-Filter [DW]This is an experimental study designed to identify underlying price activity using a series of Laguerre Filters.
Two different modes are included within this script:
-Ribbon Mode - A ribbon of 18 Laguerre Filters with separate Gamma values is calculated.
-Band Mode - An average of the 18 filters generates the basis line. Then, Golden Mean ATR over the specified sampling period multiplied by 1 and 2 are added and subtracted to the basis line to generate the bands.
Multi-Timeframe functionality is included. You can choose any timeframe that TradingView supports as the basis resolution for the script.
Custom bar colors are included. Bar colors are based on the direction of any of the 18 filters, or the average filter's direction in Ribbon Mode. In Band Mode, the colors are based solely on the average filter's direction.
Price Action Volatility FilterThis creates a none oscillating histogram that shows price action without lower time frame volatility to help show bias for use with macd or entries with other trending indicators.
Function Savitzky Golay Filter with 7 Vectors V0EXPERIMENTAL:
updated code for duo, triple and multipass
Trend FilterThe indicator colours the candles either Green or Red depending on the following conditions:-
If the N Bar Average Close > N Bar Average Open, the Bars are coloured Green.
If the N Bar Average Close < N Bar Average Open, the Bars are coloured Red.
hecate chop filterChop Filter to remove lateral trade under a threshold. Change the FilterOut parameter to filter all you want. Example of a model using it with a filtering of 0.003 (use to filter out to the level you prefer):
TheLark LMA (Laguerre) v2 - multi timeframeWhat's new?
v2 has added multi timeframe support.
Blatantly stole Chris Moody's code for multi timeframe, because why re-invent the wheel? Thanks Chris ;P
BUT -- modified the coloring to work correctly with higher timeframes, just another Lark hack, so it's a give and take :)
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The Laguerre Average (filter) was discovered by John Ehlers.
It's a newer type of averaging that is meant to take out as much of the
inherent lag that your typical EMA and SMA's give at the start of a major trend change.
So what you get is an average that turns more quickly at major trend changes,
and doesn't get tripped up on the noise (as much).
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Please thumbs up/ star/ whatever this script if you like it & use it!
See my profile for more scripts, & be sure to follow for future releases.
Sorry for my hiatus, extremely busy these days working on both my own and client work.
This script was a user request.
Bandpass Filter Strategy The related article is copyrighted material from
Stocks & Commodities Mar 2010
You can use in the xPrice any series: Open, High, Low, Close, HL2, HLC3, OHLC4 and ect...
Bandpass Filter The related article is copyrighted material from
Stocks & Commodities Mar 2010
You can use in the xPrice any series: Open, High, Low, Close, HL2, HLC3, OHLC4 and ect...
