Creates a new Item by combining existing Items.
This method can combine most types of Item. The type of Item created is dependent on the type(s) of the Items being combined.
If a Group is open, then graphics are added to the Group, otherwise a new Item is created.
- The Named List containing the Items to be combined.
SIS_BOOLEAN_AND Get the overlap region between the Items in list$. See the Analysis> Boolean > Intersect command. SIS_BOOLEAN_OR Merge the Items in list$ into a single item. See Analysis > Boolean > Union command. SIS_BOOLEAN_XOR Form the region made up of alternate overlapping sub-region of the Items in list$. See the Analysis > Boolean > Symmetric Difference command. SIS_BOOLEAN_DIFF Take bytes out of the dominant item in list$ using the other Items in list$. See the Analysis > Boolean > Subtract command. Note: The dominant item, if any, will be the first in the list of IDs returned by GetListDetails.
Available: GEO OD SISpy
sis.CreateBoolean ("Overlap Areas", SIS_BOOLEAN_AND)
creates a new item which is the result of the overlapping items in the list block from the list Overlap Areas.