params_as_sim: A MizerSim holding only the state stored in a MizerParams

In mizer: Dynamic Multi-Species Size Spectrum Modelling

A MizerSim holding only the state stored in a MizerParams

Description

Wraps the single state in a MizerParams object into a MizerSim with one time step, so that a function written against a MizerSim can be applied to it without projecting.

Usage

params_as_sim(params, t = 0)

Arguments

params	A MizerParams object.
t	The time to label the single time step with.

Details

This exists for analyses such as scanModel() that measure a quantity with a user-supplied function of a MizerSim. When the model has settled on a fixed point there is nothing to project: the state does not change, so a snapshot of it carries all the information a longer run would. Every slot that a summary function might read has to be filled, because MizerSim() initialises them all to NA and, for example, getYield() reads sim@effort and would otherwise return NA without complaint.

Note that the result has a single time step, so a function that needs more than one — anything taking a difference through time — cannot be applied to it.

Value

A MizerSim object with one time step holding the initial state of params.

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