By combining diagrams

This option will only be available if there are at least 2 diagram windows on the screen.  The user is presented with a list of the available diagrams.  After the user selects as many diagrams as desired, the program generates a single diagram  combining all the accidents from other selected diagrams.  

This may be used to combine the data from an intersection known by several different street names.  It can also be used to combine intersection data with hundred block data.

Because duplicate accidents are not added to any diagrams, this option will never result in duplicated data.

In order to ensure that all accidents from the selected diagrams are displayed, the filter for this diagram type is initially set to clear.  It may be modified after the diagram is complete.

Note from the diagram description, that this diagram is actually a "Case Id List" diagram.  The program simply exported lists of all the accidents in the specified diagrams and combined them into one long list.