| arbor | Recursive Partitioning and Regression Trees |
| arbor.anova | Set Up for anova Method for an Arbor Model |
| arbor.class | Set Up for Class Method for an Arbor Model |
| arbor.control | Control for Arbor Models |
| arbor.matrix | Create a Model Matrix for Arbor |
| arbor.object | Recursive Partitioning and Regression Trees Object |
| labels.arbor | Create Split Labels for an Arbor Object |
| model.frame.arbor | Create a Model Frame for Fitting an Arbor Object |
| na.arbor | Handles Missing Values in an Arbor Object |
| predict.arbor | Predictions from a Arbor Object |
| print.arbor | Print an Arbor Object |
| printcp | Displays CP table for Fitted Arbor Object |
| prune.arbor | Cost-complexity Pruning of an Arbor Object |
| residuals.arbor | Residuals from an Arbor Object |
| summary.arbor | Summarize an Arbor Object |
| xpred.arbor | Return Cross-Validated Predictions |