This involves finding the feeding kernel function for each species, using the pred_kernel_type parameter in the species_params data frame, checking that it is valid and all its arguments are contained in the species_params data frame, and then calling this function with the ppmr vector.

get_phi(species_params, ppmr)

## Arguments

species_params A species parameter data frame Values of the predator/prey mass ratio at which to evaluate the predation kernel function

## Value

An array (species x ppmr) with the values of the predation kernel function