Viewing and Generating Graphs

If no overlay is selected, the Audit tab displays either bar charts (for nominal or flag fields) or histograms (continuous fields).

For a nominal or flag field overlay, the graphs are colored by the values of the overlay.

For a continuous field overlay, two-dimensional scatterplots are generated rather than one-dimensional bars and histograms. In this case, the x axis maps to the overlay field, enabling you to see the same scale on all x axes as you read down the table.

• For Flag or Nominal fields, hold the mouse cursor over a bar to display the underlying value or label in a ToolTip.
• For Flag or Nominal fields, use the toolbar to toggle the orientation of thumbnail graphs from horizontal to vertical.
• To generate a full-sized graph from any thumbnail, double-click on the thumbnail, or select a thumbnail and choose Graph Output from the Generate menu. Note: If a thumbnail graph was based on sampled data, the generated graph will contain all cases if the original data stream is still open.

  You can only generate a graph if the Data Audit node that created the output is connected to the stream.

• To generate a matching graph node, select one or more fields on the Audit tab and choose Graph Node from the Generate menu. The resulting node is added to the stream canvas and can be used to re-create the graph each time the stream is run.
• If an overlay set has more than 100 values, a warning is raised and the overlay is not included.