H3 cell to children（H3 单元转子单元（H3 cell to children））¶

Supported in: Batch, Faster, Streaming

Get children of an H3 index at given resolution specifying children coarseness. Returns null for resolution <0 or >15 or for children resolution lower than given H3 index's resolution.

Expression categories: Geospatial

Declared arguments¶

Children resolution: H3 grid children resolution between 0 and 15 (inclusive).
Expression\
H3 index: A valid H3 index.
Expression\

Output type: Array\

Examples¶

Example 1: Base case¶

Argument values:

Children resolution: childrenResolution
H3 index: h3Index

h3Index	childrenResolution	Output
85283473fffffff	6	[ 862834707ffffff, 86283470fffffff, 862834717ffffff, 86283471fffffff, 862834727ffffff, 86283472fffffff, 862834737ffffff ]
881F1D4887FFFFF	9	[ 891f1d48863ffff, 891f1d48867ffff, 891f1d4886bffff, 891f1d4886fffff, 891f1d48873ffff, 891f1d48877ffff, 891f1d4887bffff ]
86be8d12fffffff	8	[ 88be8d1281fffff, 88be8d1283fffff, 88be8d1285fffff, 88be8d1287fffff, 88be8d1289fffff, 88be8d128bfff...

Example 2: Null case¶

Argument values:

Children resolution: childrenResolution
H3 index: h3Index

h3Index	childrenResolution	Output
85283473fffffff	4	null

Example 3: Null case¶

Argument values:

Children resolution: childrenResolution
H3 index: h3Index

h3Index	childrenResolution	Output
87283472bgggggg	9	null
860800017ffffff	-1	null
860800017ffffff	16	null
null	6	null
860800017ffffff	null	null

Example 4: Edge case¶

Argument values:

Children resolution: childrenResolution
H3 index: h3Index

h3Index	childrenResolution	Output
8e1fb46741ae99f	15	[ 8f1fb46741ae998, 8f1fb46741ae999, 8f1fb46741ae99a, 8f1fb46741ae99b, 8f1fb46741ae99c, 8f1fb46741ae99d, 8f1fb46741ae99e ]

Example 5: Edge case¶

Argument values:

Children resolution: childrenResolution
H3 index: h3Index

h3Index	childrenResolution	Output
8029fffffffffff	0	[ 8029fffffffffff ]

Example 6: Edge case¶

Argument values:

Children resolution: childrenResolution
H3 index: h3Index

h3Index	childrenResolution	Output
8928308280fffff	9	[ 8928308280fffff ]

中文翻译¶

H3 单元转子单元（H3 cell to children）¶

支持：批处理（Batch）、快速处理（Faster）、流处理（Streaming）

获取指定分辨率下 H3 索引的子单元，并指定子单元的粗略程度。当分辨率 <0 或 >15，或子单元分辨率低于给定 H3 索引的分辨率时，返回 null。

表达式类别： 地理空间（Geospatial）

声明的参数¶

子单元分辨率（Children resolution）： H3 网格子单元分辨率，取值范围为 0 到 15（含）。
表达式\
H3 索引（H3 index）： 有效的 H3 索引。
表达式\

输出类型： 数组\

示例¶

示例 1：基本情况¶

参数值：

子单元分辨率： childrenResolution
H3 索引： h3Index

h3Index	childrenResolution	输出
85283473fffffff	6	[ 862834707ffffff, 86283470fffffff, 862834717ffffff, 86283471fffffff, 862834727ffffff, 86283472fffffff, 862834737ffffff ]
881F1D4887FFFFF	9	[ 891f1d48863ffff, 891f1d48867ffff, 891f1d4886bffff, 891f1d4886fffff, 891f1d48873ffff, 891f1d48877ffff, 891f1d4887bffff ]
86be8d12fffffff	8	[ 88be8d1281fffff, 88be8d1283fffff, 88be8d1285fffff, 88be8d1287fffff, 88be8d1289fffff, 88be8d128bfff...

示例 2：空值情况¶

参数值：

子单元分辨率： childrenResolution
H3 索引： h3Index

h3Index	childrenResolution	输出
85283473fffffff	4	null

示例 3：空值情况¶

参数值：

子单元分辨率： childrenResolution
H3 索引： h3Index

h3Index	childrenResolution	输出
87283472bgggggg	9	null
860800017ffffff	-1	null
860800017ffffff	16	null
null	6	null
860800017ffffff	null	null

示例 4：边界情况¶

参数值：

子单元分辨率： childrenResolution
H3 索引： h3Index

h3Index	childrenResolution	输出
8e1fb46741ae99f	15	[ 8f1fb46741ae998, 8f1fb46741ae999, 8f1fb46741ae99a, 8f1fb46741ae99b, 8f1fb46741ae99c, 8f1fb46741ae99d, 8f1fb46741ae99e ]

示例 5：边界情况¶

参数值：

子单元分辨率： childrenResolution
H3 索引： h3Index

h3Index	childrenResolution	输出
8029fffffffffff	0	[ 8029fffffffffff ]

示例 6：边界情况¶

参数值：

子单元分辨率： childrenResolution
H3 索引： h3Index

h3Index	childrenResolution	输出
8928308280fffff	9	[ 8928308280fffff ]