Customizing the Tree View

The Viewer tab in the tree builder displays the current tree. By default, all branches in the tree are expanded, but you can expand and collapse branches and customize other settings as needed.

• Click the minus sign (–) at the bottom right corner of a parent node to hide all of its child nodes. Click the plus sign (+) at the bottom right corner of a parent node to display its child nodes.
• Use the View menu or the toolbar to change the orientation of the tree (top-down, left-to-right, or right-to-left).
• Click the "Display field and value labels" button on the main toolbar to show or hide field and value labels.
• Use the magnifying glass buttons to zoom the view in or out, or click the tree map button on the right side of the toolbar to view a diagram of the complete tree.
• If a partition field is in use, you can swap the tree view between training and testing partitions (View > Partition). When the testing sample is displayed, the tree can be viewed but not edited. (The current partition is displayed in the status bar in the lower right corner of the window.)
• Click the split information button (the "i" button on the far right of the toolbar) to view details on the current split. See the topic Split Details and Surrogates for more information.
• Display statistics, graphs, or both within each node (see below).

Displaying Statistics and Graphs

Node statistics. For a categorical target field, the table in each node shows the number and percentage of records in each category and the percentage of the entire sample that the node represents. For a continuous (numeric range) target field, the table shows the mean, standard deviation, number of records, and predicted value of the target field.

Node graphs. For a categorical target field, the graph is a bar chart of percentages in each category of the target field. Preceding each row in the table is a color swatch that corresponds to the color that represents each of the target field categories in the graphs for the node. For a continuous (numeric range) target field, the graph shows a histogram of the target field for records in the node.