Server module for survey data analysis. It uses `DataManager`
and adds controls and logic for creating a `survey.design` object.
Usage
FileSurvey(input, output, session, nfactor.limit = 20)
Arguments
- input, output, session
Standard Shiny server parameters.
- nfactor.limit
An integer, the threshold for unique values.
Value
A reactive list with `data`, `label`, `naomit`, and the `survey` object.