Name
connect_and_holesconnect_and_holesConnectAndHolesconnect_and_holesConnectAndHolesConnectAndHoles — Number of connection components and holes
The operator connect_and_holesconnect_and_holesConnectAndHolesconnect_and_holesConnectAndHolesConnectAndHoles calculates the number of
connection components and the number of holes of
each region of RegionsRegionsRegionsRegionsRegionsregions.
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 NumConnectedNumConnectedNumConnectedNumConnectedNumConnectednumConnected and NumHolesNumHolesNumHolesNumHolesNumHolesnumHoles
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.
- Multithreading type: reentrant (runs in parallel with non-exclusive operators).
- Multithreading scope: global (may be called from any thread).
- Automatically parallelized on tuple level.
Region(s) to be examined.
Number of connection components of a region.
Number of holes of a region.
The operator connect_and_holesconnect_and_holesConnectAndHolesconnect_and_holesConnectAndHolesConnectAndHoles 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>)set_system("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>)set_system("empty_region_result",<Result>)SetSystem("empty_region_result",<Result>)SetSystem("empty_region_result",<Result>).
thresholdthresholdThresholdthresholdThresholdThreshold,
regiongrowingregiongrowingRegiongrowingregiongrowingRegiongrowingRegiongrowing,
connectionconnectionConnectionconnectionConnectionConnection
euler_numbereuler_numberEulerNumbereuler_numberEulerNumberEulerNumber
connectionconnectionConnectionconnectionConnectionConnection,
fill_upfill_upFillUpfill_upFillUpFillUp,
fill_up_shapefill_up_shapeFillUpShapefill_up_shapeFillUpShapeFillUpShape,
union1union1Union1union1Union1Union1
Foundation