span8
span4
剪接器转换器接受许多剪辑边界和许多要剪接的特性,并将输出拆分为可能的两组。这些示例演示了裁剪器的“裁剪器优先”和“创建聚合”设置。DescriptionThe clipper takes a number of clip boundaries (clippers) and a number of features to be clipped (clippees).截至2013年FME,产量分成两组-2013年FME之前,产量分成四组:
如果裁剪特征跨越裁剪特征的边界,则将其拆分为单独的部分。 快船第一In normal use,clipper一次接收一个clipper和clippe特性,并将它们保存在内存中,直到整个组完成。此时,进行处理。It has to hold features in memory because processing can't begin until all Clipper features have been read,and there is no way to know when that occurs. a)所有剪报功能,然后
用这种方法时,剪子成为成功的替代品PointOnAreaOverlayer. Clippers First Example 附加的工作区(ClippersFirst.fmwt)显示了剪刀transformer. Workspace Screenshot Log Files - Memory Usage The log file reports the amount of memory used during translation: 2007-01-31 10:46:49 55.5 0.0通知翻译成功,1个警告(0个特征/0个坐标输出)2007-01-31 10:46:49 55.5 0.0通知FME会话持续时间:57.3秒。(CPU: 53.7s user,0.8s system)(Peak process memory usage: 109760 kB,current process memory usage: 26888 kB)
2007-01-31 10:49:46 43.3 0.0通知翻译成功,1个警告(0个特征/0个坐标输出)2007-01-31 10:49:46 43.3 0.0通知FME会话持续时间:43.7秒。(CPU: 42.2s user,0.6s system)(Peak process memory usage: 17772 kB,当前进程内存使用量:15844 KB)
Unexpected AggregatesBe aware that if a single feature is split into individual parts,and more than one of these parts falls inside the clip boundary (e.g.一个线条特征在裁剪器的多个位置上漫游,您将得到一个聚合特征(即group) of all the separate parts inside each clipper. Unexpected Aggregates Example 附加的工作区(ClipperCreateAggregates.fmwt)显示了剪刀transformer. Workspace Screenshot 输出屏幕截图 Here Create Aggregates = Yes.An aggregate is created of the OUTSIDE parts.On querying one they are all selected (here coloured green).The INSIDE parts would be similarly grouped. Here Create Aggregates = No.The queried OUTSIDE part (again coloured green) remains as an individual feature.内部零件也同样不分组。 |
© 2019 亚搏在线Safe Software Inc |Legal