ODK XLSForms link the categorical codings to a variable type name in the
'survey' sheet. The codings are specified in the 'choices' sheet which has
a `list_name` column that holds the variable type names. Each row that has
that name will be associated with that categorical type coding. This function
converts subsets of the choices sheet into individual 'coding' objects.
Usage
odk_to_coding(choice_table)
Value
A `coding` object that corresponds to the choices' slice
Arguments
choice_table
A data.frame slice of the "choices" table from an
XLSForm