Relationship between `popsize` and `weights`

[ayushpatnaikgit]

In our code, we are using popsize to infer weights and vice versa. This isn't done in R, there must be a good reason for not doing that.

[smishr]

The reason is popsize is usually not 'known' it is estimated. In R, if the fpc parameter is not given, popsize in the survey objects remains NULL