Setup response and indices for formula environment
pffr_setup_response(
is_sparse,
ydata,
yind,
yind_name,
nobs,
nyindex,
response_name,
eval_env,
frml_env,
formula_env
)A list with yind_vec, yindex_vec_name, obs_indices, missing_indices.
Whether data is sparse.
The ydata (or NULL).
The y-index vector.
Name of y-index.
Number of observations.
Number of y-index points.
Response variable name (symbol).
Evaluation environment.
Formula environment.
Environment to assign to.