At the moment the regions must match between population (as defined in the density object) and the design.
This could be modified so that only part of a population is surveyed or a design extends beyond the range of the population.
I believe, these scenarios can currently be achieved using multiple strata and allocating no abundance or no effort to the relevant stratum/strata - not tested but expect this to be a very rarely used scenario. Please get in touch if this is something you are interested in and is not working for you.
At the moment the regions must match between population (as defined in the density object) and the design.
This could be modified so that only part of a population is surveyed or a design extends beyond the range of the population.
I believe, these scenarios can currently be achieved using multiple strata and allocating no abundance or no effort to the relevant stratum/strata - not tested but expect this to be a very rarely used scenario. Please get in touch if this is something you are interested in and is not working for you.