stock indicatorsfor .NET

Appearance

Gator Oscillator ​

Created by Bill Williams, the Gator Oscillator is an expanded oscillator view of Williams Alligator's three moving averages. [Discuss] 💬

csharp
// C# usage syntax
IReadOnlyList<GatorResult> results =
  bars.ToGator();

// with custom Alligator configuration
IReadOnlyList<GatorResult> results = bars
  .ToAlligator([see Alligator docs])
  .ToGator();

Historical price bars requirements ​

If using default settings, you must have at least 121 periods of bars to cover the warmup and convergence periods. Since this uses a smoothing technique, we recommend you use at least 271 data points prior to the intended usage date for better precision. If using a custom Alligator configuration, see Alligator documentation for Historical price bars requirements.

bars is a collection of generic TBar historical price bars. It should have a consistent frequency (day, hour, minute, etc). See the Guide for more information.

Response ​

csharp
IReadOnlyList<GatorResult>
  • This method returns a time series of all available indicator values for the bars provided.
  • It always returns the same number of elements as there are in the historical price bars.
  • It does not return a single incremental indicator value.
  • The first 10-20 periods will have null values since there's not enough data to calculate.

🚩 ⚞ Convergence warning

The first 150 periods will have decreasing magnitude, convergence-related precision errors that can be as high as ~5% deviation in indicator values for earlier periods.

GatorResult ​

propertytypedescription
TimestampDateTimeDate from evaluated TBar
UpperdoubleAbsolute value of Alligator Jaw-Teeth
LowerdoubleAbsolute value of Alligator Lips-Teeth
UpperIsExpandingboolUpper value is growing
LowerIsExpandingboolLower value is growing

Utilities ​

See Utilities and helpers for more information.

Chaining ​

This indicator may be generated from any chain-enabled indicator or method.

csharp
// example
var results = bars
    .Use(CandlePart.HLC3)
    .ToGator();

Results cannot be further chained with additional transforms.

See Chaining indicators for more.

Streaming ​

Use the buffer-style List<T> when you need incremental calculations without a hub:

csharp
GatorList gatorList = new();

foreach (IBar bar in bars)  // simulating stream
{
  gatorList.Add(bar);
}

// based on `ICollection<GatorResult>`
IReadOnlyList<GatorResult> results = gatorList;

Subscribe to a BarHub for advanced streaming scenarios:

csharp
BarHub barHub = new();
GatorHub observer = barHub.ToGatorHub();

foreach (IBar bar in bars)  // simulating stream
{
  barHub.Add(bar);
}

IReadOnlyList<GatorResult> results = observer.Results;

Compound hub

The Gator hub is based on the Alligator indicator. When the Gator hub is chained from an existing AlligatorHub instance it will reuse the existing Alligator hub values rather than creating its own internal Alligator calculations. This is not a normal chaining model.

csharp
// creates an internal Alligator hub
var gatorHub = bars
  .ToGatorHub();

// this is helpful in cases where you have an independent 
// Alligator hub and do not want to create duplicate copies

var alligatorHub = bars
  .ToAlligatorHub();

// does not create 2nd internal huba separate internal Alligator hub
var gatorHub = alligatorHub
  .ToGatorHub();  // does not create 2nd internal hub

// ❌ Alligator → [ Alligator ] → Gator
// ✅ Alligator → Gator

See Buffer lists and Stream hubs for full usage guides.