split_stratum_by_biting.SIS.Rd
Split a stratum into two strata, assigning a fraction `p` a new biting weight that is multiplied by a factor `fac` compared with the old one. The biting weight for the remaining `1-p` gets a new factor `1/fac`
# S3 method for SIS
split_stratum_by_biting(pars, i, j, p, fac)
a [list] defining a model
the host species index
the stratum to split
the fraction that gets multiplied by `fac`
a factor
pars a list
a [list]