Create a projoint_data Object

Internal constructor for projoint_data objects. Used by reshape_projoint and make_projoint_data to bundle conjoint survey labels and response data into a consistent structure.

Usage

projoint_data(labels, data)

Arguments

labels

A data frame of conjoint attribute–level metadata. Must include attribute names, attribute IDs (e.g., "att1"), and level IDs (e.g., "att1:lev1").

data

A data frame (typically a tibble) containing the reshaped conjoint survey responses, one row per respondent–task–profile, with attribute columns, selected, agree, and any covariates.

Value

A list of length two with class "projoint_data", containing:

• $labels: attribute–level mapping

• $data: respondent–task–profile dataset