scaleRates: Rescale all rates in a mizer model

In mizer: Dynamic Multi-Species Size Spectrum Modelling

Rescale all rates in a mizer model

Description

Multiplies all rates in the model by a given factor. Rescaling all rates by a factor f is equivalent to rescaling time by f: it speeds up (or slows down) all dynamics without affecting the steady state of each species, provided the resource spectrum is held at its steady-state value.

Usage

scaleRates(params, factor, ...)

Arguments

params	A MizerParams object
factor	The positive factor by which all rates are multiplied.
...	Currently unused.

Details

The following rates and their associated species parameters are rescaled:

• Search volume (search_vol slot and gamma species parameter)

• Maximum intake rate (intake_max slot and h species parameter)

• Metabolic rate (metab slot and ks, k species parameters)

• External mortality (mu_b slot and z0, z_ext, z0pre species parameters)

• External encounter rate (ext_encounter slot and E_ext species parameter)

• External diffusion (ext_diffusion slot and D_ext species parameter)

• Catchability (catchability slot and catchability column in gear_params)

• Maximum reproduction rate (R_max species parameter)

• Resource growth rate (rr_pp slot)

Both the rate arrays stored in the MizerParams slots and the associated species parameters in species_params and given_species_params are rescaled, so that the parameters remain consistent with the rate arrays.

Value

The MizerParams object with all rates rescaled by factor.

See Also

scaleModel()

mizer documentation built on Aug. 31, 2026, 5:08 p.m.