狙击手

距离（值）或距离（百分比）：从第一个坐标开始，可以将线路开始和结束的剪切的数量指定为地面单位的测量或线路整个长度的百分比。

可以使用任何负值来指定与原始线路最终顶点对应的结束位置。大于原始线路的测量的值将被解释为终点。

Each of these parameters may either be entered as a number, or can be taken from the value of a feature attribute by selecting the attribute name from the pull-down list.

如果是测量模式是3D，线性特征具有Z坐标，所有测量将被视为从一个顶点到3D空间中的一个顶点的距离。否则，将仅考虑X和Y坐标，并且测量将是顶点之间的平面距离。

测量（相对于起点）：在中指定的值开始位置和结束位置参数是指原始线的起点的测量值和结果线的开始或结束点的度量差异。

负值将被解释为原始线的起点，并且大于原始线路的测量值的值将被解释为终点。

如果是Measure Name字段为空白，使用默认度量值。否则，测量值具有指定的名称Measure Name代替使用字段。

Measure (Value):在中指定的值开始位置和结束位置parameters refer to the measure values at the start and end points of the resulting line.

Any value less than the input’s starting measure will be interpreted as the start point of the original line and values larger than the input’s ending measure will be interpreted as the end point of the original line.

如果是Measure Name字段为空白，使用默认度量值。否则，测量值具有指定的名称Measure Name代替使用字段。

顶点：来自原始线路的顶点，用于形成所得线的第一和最后一个顶点，被指定为数字索引，“0”是线的第一个顶点。

Negative numbers measure vertices relative to the last point in the line, with the value "-1" used to specify the vertex which is the last vertex of the line's geometry, "-2" the second last vertex, and so on. If the input vertex number is smaller than the negative absolute value of the total number of vertices, then it will be interpreted as the starting vertex of the original line and if it is larger than the total number of vertices, it will be interpreted as the ending vertex.

Each of these parameters may either be entered as a number, or can be taken from the value of a feature attribute by selecting the attribute name from the pull-down list.