r2ssm: Convert R object into SSM object
In StateSpaceModels/ssminr: ssminr

Internal functions to convert R object into SSM

r2ssm_prior(prior)

r2ssm_resources(theta, covmat)

ssm2r_resources(ssm_theta)

r2ssm_populations(pop, state_variables, remainder = NULL, pop_size = NULL)

`prior`	a list
`theta`	a vector
`covmat`	a matrix
`ssm_theta`	a list (usually a theta.json of SSM parsed by `fromJSON`)
`pop`	character
`state_variables`	character vector, name of all state variables
`remainder`	character, name of the state variable considered as a remainder.
`pop_size`	character, name of the parameter corresponding to the population size. Required if `remainder` is provided.