The Regression Channel Width solver measures how wide a regression channel is, as a sense of how much the market is moving.
Some systems need a certain amount of price movement for their targets to be hit. Width has no direction, so the Long and Short outputs are the same.
Properties tab
The essential settings for the node.
Modifiers
Buttons for the most common output modifiers. They change only the selected instance of a node on a Logic Board, so they appear only when a node is selected there, not when a solver is selected in the Solvers panel. That keeps the solver’s original output unchanged everywhere else it’s used, much like changing an SMA’s plot color on one chart leaves it unchanged on your other charts.
| Button | What it does |
|---|---|
| Enable | Turns the node on or off. When it’s off, the node is left out of the system’s calculations. It still looks connected on the Logic Board, but it’s ignored. |
| Invert | Inverts the node’s output. The same calculation as the Inverter function node, without its extra options. |
| Swap | Swaps the outputs: Long becomes Short and Short becomes Long. The same as the Long/Short Modifier function node with Mode: Swap. |
Global Properties
These settings apply to every instance of the solver: change one instance and they all change. To change just one, make a copy of the solver. The copy is a separate solver, with a number added to the end of its name.
Behavior
Turns off the Long or the Short output.
| Setting | What it does |
|---|---|
| Evaluate | Which outputs the solver calculates. Both: Long and Short. Long only: only Long; the Short output is removed. Short only: only Short; the Long output is removed. |
Channel Parameters
| Setting | What it does |
|---|---|
| Period | The regression channel’s period. |
| Width | The channel’s width setting. |
Width Targets
| Setting | What it does |
|---|---|
| Ideal Width | At this width or wider, the output is 1. Set the unit in Measured In (see Measuring distance). |
| Minimum Width | From this width, the output starts to rise, reaching 1 at the Ideal Width. Below it, the output is 0. |
Options tab
Secondary settings shared by all nodes.
Weight
Changes the node’s final output value. Only needed when designing a fuzzy logic system, or a fuzzy logic part of a system.
How Weight works
Weight changes only the selected instance of a node on a Logic Board. So the controls appear only when a node is selected there, not when a solver is selected in the Solvers panel: a solver’s original output can’t be changed globally.
| Control | What it does |
|---|---|
| Multiply Output | Multiplies the node’s internal Long and Short values (set by the Output Rules on the Properties tab) by this number. The final output still can’t go above 1 (see Slider). |
| Slider | Limits the final output to between 0 and 1. The left handle sets a minimum output, given whether or not the condition is true. The right handle sets the maximum; the output is capped there. |
| Hedge Operation | Applies a formula to the internal value. None: unchanged. Very: squares it (value²). Somewhat: takes the square root (√value). |
Example: two out of three
Three solvers check three indicator conditions, but only two need to be true. Connect them to an Additive logic node and set each solver’s maximum (the slider’s right handle) to 0.5. When any two are true, the Additive node adds 0.5 + 0.5 + 0 = 1, which means the two-out-of-three condition is met.
Description
Free text for describing what the node does or what it’s for. The Description is shared by every instance of the node, unlike Weight, which is set per instance.
Help tab
Shows this page for the selected node, inside BloodHound. Click the node’s image at the top of the page to open it in a bigger window. The built-in web viewer needs NinjaTrader 8.0.26.0 or newer.
Tutorial video
From the weekly training workshop, July 2024. This solver is covered from 11:52.
Examples
Example 1: The basics
Is the channel at least 4 ATRs wide?
Settings and chart
Settings
- Add the solver to the Logic Board and connect it to the Result node.
- Set Ideal Width and Minimum Width to 4 ATRs.
Result
Two charts side by side. On the left, no output: the channel is narrower than 4 ATRs, so the market has moved little recently. On the right, the channel has widened beyond 4 ATRs and there is an output.
