| add_fit | Add predicted values with standard errors to a data.frame |
| constant | Keep a variable constant |
| mdl_to_ndat | Create a data.frame from a GAM object for prediction |
| ndat_to_contour | Contour plot from a data.frame with combinations of predictor values. |
| plot_contour | Contour plot from a GAM model object. |
| plot_curve | Curve plot of a partial effect from a GAM model. |
| plot_partial | Plot a partial effect, dispatching by view-variable types. |
| vary | Varying values for prediction |