connect_and_holesconnect_and_holesConnectAndHolesConnectAndHolesconnect_and_holes（算子）
名称
connect_and_holesconnect_and_holesConnectAndHolesConnectAndHolesconnect_and_holes — 连接组合和孔的数量。
签名
def connect_and_holes(regions: HObject) -> Tuple[Sequence[int], Sequence[int]]
def connect_and_holes_s(regions: HObject) -> Tuple[int, int]
描述
算子 connect_and_holesconnect_and_holesConnectAndHolesConnectAndHolesConnectAndHolesconnect_and_holes 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 NumConnectedNumConnectedNumConnectedNumConnectednumConnectednum_connected and NumHolesNumHolesNumHolesNumHolesnumHolesnum_holes
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.
执行信息
- 多线程类型：可重入（与非独占算子并行运行）。
- 多线程作用域：全局（可从任何线程调用）。
- 在元组级别上自动并行化。
参数
RegionsRegionsRegionsRegionsregionsregions (输入对象) region(-array) → objectHRegionHObjectHRegionHobject
待检查的区域。
NumConnectedNumConnectedNumConnectedNumConnectednumConnectednum_connected (输出控制) integer(-array) → HTupleSequence[int]HTupleHtuple (integer) (int / long) (Hlong) (Hlong)
Number of connection components of a region.
NumHolesNumHolesNumHolesNumHolesnumHolesnum_holes (输出控制) integer(-array) → HTupleSequence[int]HTupleHtuple (integer) (int / long) (Hlong) (Hlong)
Number of holes of a region.
结果
算子 connect_and_holesconnect_and_holesConnectAndHolesConnectAndHolesConnectAndHolesconnect_and_holes 在输入不为空时返回值 2 ( H_MSG_TRUE )。当输入为空（无可用输入区域）时，可设置行为通过算子 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>)set_system("no_object_result",<Result>)。空区域（区域是空集）的情况下的可设置行为通过
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>)set_system("empty_region_result",<Result>)。
可能的前趋
thresholdthresholdThresholdThresholdThresholdthreshold,
regiongrowingregiongrowingRegiongrowingRegiongrowingRegiongrowingregiongrowing,
connectionconnectionConnectionConnectionConnectionconnection
替代
euler_numbereuler_numberEulerNumberEulerNumberEulerNumbereuler_number
另见
connectionconnectionConnectionConnectionConnectionconnection,
fill_upfill_upFillUpFillUpFillUpfill_up,
fill_up_shapefill_up_shapeFillUpShapeFillUpShapeFillUpShapefill_up_shape,
union1union1Union1Union1Union1union1
模块
基础