MeasureExtractor.

Feature types that contain point, line arc, area geometry, or a vertex of linear or area geometry.

Individual Vertex by Index设置指定的属性的值点或顶点的目的地属性to the measure extracted from a point, curve or area at the vertex specified by theIndex.

一种negative index can be used to indicate the position of the vertex in which the measure is to be extracted relative to the end of the geometry (-1 is the last coordinate, -2 the second last, and so on). If the geometry of a feature is a point, then only index 0 or index -1 can be used to retrieve the measure value. Any geometry other than a point, curve or area is ignored.

观点设置指定的属性的值点或顶点的目的地属性从点提取的措施。

弧形终点sets the values of attributes specified in the弧的目标开始/结束点属性从分别从弧的开始和终点提取的措施。

整个线路或整个区域添加指定的列表属性线路或区域的目标列表属性and sets the list elements to the measures extracted from the line or area. A Path geometry or path boundary of an area is not supported. Apathsplitter变压器可用于将路径分成其各个段，以便在每个单个段上检索测量值。一种PathBuilder可以then join the segments back into a path.

检索与给定类型匹配的几何测量。如果几何图形是不同类型的，则不会修改该功能。如果未提供源测量名称，将使用默认度量。