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Synthetic Instrument
Source: https://fxcodebase.com/code/viewtopic.php?f=17&t=75486
Forum: 17 · Topic 75486 · 4 post(s)
Synthetic Instrument
Steve_W · Sat Jan 11, 2025 8:27 am
Latest version - see post further below for info on directional volume
This indicator allows the formulation of a synthetic instrument from a list of other instruments. The method is similar to what is available on TradingView where you can enter a math function. The indicator allows two modes: “Linear Product” or “Geometric Mean”
Linear product allows direct conversion of pairs to a new pair For Example Gold in GBP: XAUGBP = XAUUSD / GBPUSD
Geometric Mean is more suitable to create an index of several components priced in different measurements (see Wikipedia for math description). For example European Stocks = (GER30 x FRA40 x UK100 x ESP35 x ESTX50)^(1/5) ie. the product of the Indices raised to the power of 0.2 …as in 1/(number of instruments)
It can also be used to generate a currency strength: GBP Strength = (GBPUSD / EURGBP x GBPCAD x GBPCHF x GBPAUD x GBPJPY x GBPNZD)^(1/7) The numerators being GBP and denominators other currencies - in this case EURGBP is inverted as defined in indicator parameters. USD Strength = (1/EURUSD / GBPUSD x USDCAD x USDCHF x USDJPY / AUDUSD / NZDUSD)^(1/7) it could be extended by adding other currencies outside the Majors such a USDCNH, USDNOK, etc.. The code is limited to 10 currencies. Edit this line at start of code to change: “local MAX_INSTRUMENTS = 10;”
Other ideas might be Averaged Oil = (USOil x UKOil)^(1/2) Oil not in Dollars = (USOil / USDOLLAR) Scandinavia strength = (1/USDNOK / USDSEK / EURNOK / EURSEK)^(1/4) and so on…
Examples of output shown below.
- the indicator allows bid/ask source data and for different timeframes
- output is selectable a candles, open, high, low, close, median, typical, weighted
- high/low are via an approximation so may not be accurate unless short timeframe data is used
- volume is also available via sum of sum of input instrument volumes
- output streams are available external to the indicator either as a candle stream or singly as a selected stream. This should allow adding existing indicators to the chart.
Hope it works - have fun
Steve
Gold priced in GBP
European Stock Indices
European Stock Indices Tick Volume
GBP Currency Strength
Parameters
Re: Synthetic Instrument
Steve_W · Fri Jan 24, 2025 12:57 pm
Here’s some code additions to the indicator
Added: Sum Pips -useful for tracking net profit on a group of parallel trades Sum P/L - as above but taking into account PipCost of each instrument Harmonic Mean - another way of averaging Overlay - main chart instrument may be added to indicator % Change Basket Options - a pre-defined list of instrument baskets to save having to configure each time
The basket options are: Majors strength: “USD”, “EUR”, “GBP”, “CAD”, “AUD”, “NZD”, “JPY”, “CHF” Exotics strength: “NOK”, “SEK”, “ZAR”, “HUF”, “TRY” Extended baskets: “USD Extended”, “EUR Extended” Stock indices by time zone: “US Stock Indices”, “European Stock Indices”, “Asia Stock Indices” Risk on/off feeling: “Risk-On”, “Safe Haven” Currency strength by region: “North America”, “Europe”, “Australasia”, “Asia”, “Latin America”, “Scandinavia” Special currency baskets: “Commodity Currencies USD”, “Commodity Currencies USD & EUR” Oil: “Oil” Gold etc..: “Monetary Metals”, “Gold Majors”, “Silver Majors” Commodity Metals: “Metals Complex” Commodity Softs: “Softs”
Baskets require specific instruments to be subscribed. The indicator will note which are missing. It shouldn’t throw an error but the basket will be incomplete.
The actual construction of these baskets is down to personal preference - code is quite easy to edit. Geometric Mean is probably the go to averaging method - if using large diverse baskets - though often all methods give very similar output. Geometric mean has analogies with Log function and can provide linear trends or support/resistance in many cases, even though it may involve a large number of instruments.
Keep in mind the larger a basket and more instances of the indicator will possibly overload the application or bar-data availability. So generally, don’t simultaneously use too many indicator instances with large baskets.
There are some bugs - the indicator sometimes requires refreshing - timeframe change or zooming out… work in progress
SPX500 compared to risk-on basket
basket example in Sum P/L for three hypothetical trades
new parameter options
Re: Synthetic Instrument
Steve_W · Sat Jan 25, 2025 3:09 pm
Here’s an updated version. Hopefully code stability is improved - there were some errors causing occasional display hanging and some other bugs
Also a couple more additions: RMS, Heronian mean, energy complex
The instrument overlay function could be improved - at the moment it is based on max/min over a range but this is not totally optimal when comparing market over/under performance.
Re: Synthetic Instrument
Steve_W · Thu Feb 13, 2025 7:01 pm
Latest update for this indicator
- it now includes a directional volume estimate
- some new pre-configured baskets
- bug fixes + code tidy - should be more solid on not crashing
The directional volume looks at volume for each component of the basket, together with the candle directions. The volumes are summed or subtracted depending on each candle direction. The net result is then filtered to give overall +/-Ve volume. Additionally each volume can be weighted via a ratio of |(Close-Open)/(High-Low)| which aims to represent the volume fraction that caused the Close-Open move.
The default parameters give coloured candles depending on volume direction - but this may be configured to off. Set EMA/MVA filter length to suit. Price type used for directional volume may be changed to use: open/close/high/low/median/weighted/typical - this may help noise
With regards to basket selection options: 1) Chart Pair = main chart instrument separated into numerator and denominator pairs… so GBP/USD would be Geometric Mean of 6 GBP pairs, 6 1/USD pairs and GBP/USD = 13 pairs Directional volume uses all 13 pairs to give overall directional volume consensus The chart will look the same shape as GBP/USD but with more noise
2) Chart Pair Numerator: for GBP/USD would configure all GBP pairs - 7 off - GBP strength
3) Chart Pair Denominator: for GBP/USD would configure all USD pairs - 7 off - USD strength
4) Some new additional baskets pre-configured such as Gold/Silver, Dow/Gold, etc…
Examples below to illustrate how the directional volume works
GBP/USD D1 showing directional volume via 13 pairs
XAU/USD / SPX400 H4 with directional volume via the the 2 instruments