connect_and_holesconnect_and_holesConnectAndHolesConnectAndHoles (Operator)

Name

connect_and_holesconnect_and_holesConnectAndHolesConnectAndHoles — Number of connection components and holes

Signature

Description

The operator connect_and_holesconnect_and_holesConnectAndHolesConnectAndHolesConnectAndHoles calculates the number of connection components and the number of holes of each region of RegionsRegionsRegionsRegionsregions.

In the documentation of this chapter (Regions / Features), you can find an image illustrating regions which vary in the number of their connection components and the number of their holes.

If more than one region is passed the numerical values of the output control parameters NumConnectedNumConnectedNumConnectedNumConnectednumConnected and NumHolesNumHolesNumHolesNumHolesnumHoles are each stored in a tuple, the position of a value in the tuple corresponding to the position of the region in the input tuple.

Execution Information

• Multithreading type: reentrant (runs in parallel with non-exclusive operators).
• Multithreading scope: global (may be called from any thread).
• Automatically parallelized on tuple level.

Parameters

Result

The operator connect_and_holesconnect_and_holesConnectAndHolesConnectAndHolesConnectAndHoles returns the value 2 (H_MSG_TRUE) if the input is not empty. The behavior in case of empty input (no input regions available) is set via the operator set_system('no_object_result',<Result>)set_system("no_object_result",<Result>)SetSystem("no_object_result",<Result>)SetSystem("no_object_result",<Result>)SetSystem("no_object_result",<Result>). The behavior in case of empty region (the region is the empty set) is set via set_system('empty_region_result',<Result>)set_system("empty_region_result",<Result>)SetSystem("empty_region_result",<Result>)SetSystem("empty_region_result",<Result>)SetSystem("empty_region_result",<Result>).

Possible Predecessors

thresholdthresholdThresholdThresholdThreshold, regiongrowingregiongrowingRegiongrowingRegiongrowingRegiongrowing, connectionconnectionConnectionConnectionConnection

Alternatives

euler_numbereuler_numberEulerNumberEulerNumberEulerNumber

See also

connectionconnectionConnectionConnectionConnection, fill_upfill_upFillUpFillUpFillUp, fill_up_shapefill_up_shapeFillUpShapeFillUpShapeFillUpShape, union1union1Union1Union1Union1

Module

Foundation