弧估计量
Replaces the geometry of the feature with a two-dimensional circular arc whose shape is estimated from the first,middle,and last point of the linear feature passed in.The result is an approximation only and unless the linear feature is previously known to be circular,结果可能与原始特征完全不同。
该变压器最有用的是,当该特征最初已知为圆弧时,被划成一条线。This transformer can then be used to turn it back into an arc.
For example,包含这些点的功能:
2,1
1,2
0,2.236067977(sqrt(5))。
将转换为具有此几何图形的圆弧特征:
0,0
and these attributes:
fme_primary_axis 2.236067977
fme_次_轴2.236067977
fme_start_angle 26
FME扫掠角63
FME U旋转0
Input Ports
This transformer accepts linear features with at least 3 points.
输出端口
估计的弧特征通过这个端口输出。
Parameters
Not applicable.
使用说明
如果弧的参数已经作为特征上的属性提供,然后使用2灭弧室或3灭弧室变压器。
Example
编辑变压器参数
使用一组菜单选项,可以通过引用工作区中的其他元素来指定变压器参数。More advanced functions,例如高级编辑器和算术编辑器,are also available in some transformers.要访问这些选项的菜单,点击beside the applicable parameter.更多信息,see变压器参数菜单选项.
Transformer Categories
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在上搜索有关此变压器的示例和信息FME Knowledge Center.