sweep_arms: The order in which to project the scan values

In mizer: Dynamic Multi-Species Size Spectrum Modelling

The order in which to project the scan values

Description

With continuation each scan value starts from the attractor reached at the previous one, so it pays to visit them in an order where consecutive values are close together. When the value the model currently sits at is known, that means working outwards from it in both directions; otherwise the order the user gave is used, which is also what lets a decreasing scan_values trace a hysteresis branch deliberately.

Usage

sweep_arms(scan_values, current_scan_value = NULL)

Arguments

scan_values	The values to scan over.
current_scan_value	The value the model currently sits at, or NULL.

Details

The two directions are returned as separate arms rather than as one sequence, because each has to begin again at the model as it was given. Run as one sequence they would carry the attractor from the far end of the descending arm into the start of the ascending arm, which is the opposite of starting each projection from a neighbour, and in a model with coexisting attractors would follow the wrong branch.

Value

A list of integer vectors, each holding indices into scan_values in the order they should be projected. Each arm is to be started from the unmodified model.

mizer documentation built on Aug. 24, 2026, 9:08 a.m.