All Cadcorp SIS API Methods

CreateBoolean Method

Description

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.

Syntax

Public Function CreateBoolean( _
   ByVal list As String, _
   ByVal boolop As Integer _
) As Integer

Parameters

list

The Named List containing the Items to be combined.

 

boolop

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.

Remarks

Available: GEO  OD SISpy

Group:

• Boolean Methods

Example

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.