Creates a data frame grid over the range of the covariates for coefficient evaluation.
coef_make_data_grid(trm, model_data, pffr_info, grid_sizes, is_pcre)A data frame suitable for PredictMat, with xm/ym/zm attributes.
A smooth term object from object$smooth.
The model data frame (object$model).
List with pffr metadata: yind_name, pcre_terms.
Named list with n1, n2, n3 grid sizes.
Logical, is this a pcre term?