make XH_obj for the Garki model

Implements setup_XH_obj for the garki model

# S3 method for class 'garki'
setup_XH_obj(Xname, xds_obj, i, options = list())

Arguments

Xname

the model name

xds_obj

an xds model object

i

the host species index

options

model options as a named list

Value

a list vector