Documentation
搜索文档
karat

+

K

API 参考 ↗
数据连接与集成PB函数表达式将知名二进制解析为几何

注意：以下翻译的准确性尚未经过验证。这是使用 AIP ↗ 从原始英文文本进行的机器翻译。

将知名二进制解析为几何

支持于: 批处理, 流处理

将知名二进制 (WKB) 转换为几何逻辑类型。无效的 WKB 输入将返回为空。可选择提供源坐标系标识符，以便从源坐标系转换为 WGS 84（如果 WKB 尚未在 WGS 84 中）。

表达式类别：地理空间

声明的参数

  • 表达式 - 作为二进制的有效知名二进制。
    Expression<Binary>
  • 非必填 源坐标系 - 如果知名二进制不是 WGS 84，则为非必填的坐标系标识符。格式为 "authority"。例如，UTM 第 18N 区域可以通过 EPSG:32618 来识别。
    Literal<字符串>

输出类型： Geometry

示例

示例 1：基本情况

参数值：

  • 表达式: wkb
  • 源坐标系: null
wkb输出
AAAAAAFACAAAAAAAAEAUAAAAAAAA{"type":"Point","coordinates":[3.0, 5.0]}
AIAAAAFACAAAAAAAAEAUAAAAAAAAQAAAAAAAAAA={"type":"Point","coordinates":[3.0, 5.0, 2.0]}
AAAAAAMAAAABAAAABAAAAAAAAAAAAAAAAAAAAAA/8AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA/8AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA={"type":"Polygon","coordinates":[[[0.0,0.0],[1.0,0.0],[0.0,1.0],[0.0,0.0]]]}
AAAAAAIAAAACAAAAAAAAAAAAAAAAAAAAAD/wAAAAAAAAAAAAAAAAAAA={"type":"LineString","coordinates":[[0.0,0.0],[1.0,0.0]]}

示例 2：基本情况

参数值：

  • 表达式: wkb
  • 源坐标系: EPSG:32618
wkb输出
AAAAAAFBE4gAAAAAAEFQZzgAAAAA{"type":"Point","coordinates":[-77.07368071728229,38.83040844313318]}
AIAAAAFBE4gAAAAAAEFQZzgAAAAAQAAAAAAAAAA={"type":"Point","coordinates":[-77.07368071728229,38.83040844313318, 2.0]}
AAAAAAMAAAABAAAABEETiAAAAAAAQVBnOAAAAABBE4mQAAAAAEFQZzgAAAAAQROIAAAAAABBUGdRAAAAAEETiAAAAAAAQVBnOAAAAAA={"type":"Polygon","coordinates":[[[-77.07368071728229,38.83040844313318],[-77.0725293738795,38.83042888342659],[-77.07370685720375,38.83130901341597],[-77.07368071728229,38.83040844313318]]]}
AAAAAAIAAAACQROIAAAAAABBUGc4AAAAAEETiZAAAAAAQVBnOAAAAAA={"type":"LineString","coordinates":[[-77.07368071728229,38.83040844313318],[-77.0725293738795,38.83042888342659]]}

示例 3：空情况

参数值：

  • 表达式: wkb
  • 源坐标系: null
wkb输出
null
nullnull