Calculates the diffusion rate \(D_i(w)\) (grams^2/year) for each species. This diffusion rate has two components:
Thethe diffusion due due to the variability in prey sizes. This is the diffusion term from the jump-growth equation.
Any externally specified diffusion, which is added via
setExtDiffusion()
You would not usually call this function directly but instead use
getDiffusion(), which then calls this function unless an alternative
diffusion rate function has been registered, see setRateFunction().
Usage
projectDiffusion(params, n, n_pp, n_other, t = 0, feeding_level, ...)
# S3 method for class 'MizerParams'
projectDiffusion(params, n, n_pp, n_other, t = 0, feeding_level, ...)
mizerDiffusion(params, n, n_pp, n_other, t = 0, feeding_level, ...)Arguments
- params
A MizerParams object
- n
A matrix of species abundances (species x size).
- n_pp
A vector of the resource abundance by size
- n_other
A list of abundances for other dynamical components
- t
The time for which to do the calculation (Not used by standard mizer rate functions but useful for extensions.)
- feeding_level
An array (species x size) with the feeding level. If not provided, it is calculated from the given abundances.
- ...
Unused