i. Select Maps

To merge maps:

1. From the menu bar, select Analysis > Merge Maps. The Merge Maps window opens listing any open VUE maps.
   A set of maps can be created from maps already open in VUE or by selecting maps stored on your computer. Sets can be modified using the check boxes or by deleting a map from the set if the delete icon is available (for a map that’s not open).
   To add maps to the set:
2. Click the Add Maps button and browse for the file(s).
   To remove maps from the set:
3. In the Set field, deselect the map by clicking the checkmark.
   A primary map dictates how elements will be laid out in the new merged map. The primary map can also act as a filter to include or exclude items from the new merged map (see step 5 below).
   To select a primary map:
4. In the Primary field, click the option button for the primary map.
   The Determine map filter option provides 3 choices:
   1. To show all nodes from the maps to be merged on the merged map.
   2. To show nodes found on the primary map only.
   3. To exclude nodes found on the primary map.
      To set a map filter:
5. In the “Determine map filter” field, make a selection.
   The next field, the Merge property field, determines the criteria upon which nodes are considered to be “the same” for the purpose of merging.
   The choices are:
   1. Label – nodes with the same label are counted as the same.
   2. Ontological Membership – only nodes with the same ontological type are treated the same, including all nodes with no ontological membership – they all get merged together as well.
   3. Ontological Membership and Label – nodes with the same label but different ontological memberships do not get merged.
6. In the Merge property field, make a selection.