expand_kernel_offsets: Expand kernel weights indexed by grid offset into a full...

In mizer: Dynamic Multi-Species Size Spectrum Modelling

Expand kernel weights indexed by grid offset into a full kernel array

Description

The predation kernel depends only on the predator/prey mass ratio, so on the geometric grid it is a function of the offset m between the predator and prey grid indices alone. phis[i, m + 1] holds the weight of species i at offset m. This helper writes those weights into the (predator species x predator size x prey size) array that the non-FFT code paths work with.

Usage

expand_kernel_offsets(phis, params, species)

Arguments

phis	A species-by-offset matrix of kernel weights, with the offset running from 0 to length(params@w_full) - 1.
params	A MizerParams object supplying the grid.
species	A character vector of species names for the dimnames.

Value

An array (predator species x predator size x prey size).

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