Clipper

该features routed into the transformer via theClipperport identify the area against which allClippeefeatures are processed. TheClippercan consist of any area features (polygons, donuts, or aggregate polygons/donuts). TheClipper如果如果是，也可以是固体或多固Clippee输入包括这些几何形状的固体，点，点云或聚集体。遇到的任何无效剪辑功能都将以警告记录并丢弃。

通过剪裁功能Clippee港口。

Clippeefeatures that are completely within theClipper，和Clippeefeatures that intersect theClipper这被分成了碎片。那些在里面的那些碎片Clipperare output via this port.

Clippeefeatures completely outside of theClipper通过Outsideport, andClippeefeatures that intersect theClipper这被分成了碎片。在剪裁区域外部的那些碎片通过该端口输出。

无效Clipper功能（即非多边形功能）以及无效Clippeefeatures (that is, features with no geometry) are output via the港口。

被拒绝的功能将有一个fme_rejection_codeattribute with one of the following values:EXTRA_CLIPPER_FEATURE,INVALID_CLIPPER_GEOMETRY_TYPE.

IfGroup Byattributes are selected, features with the same values in theGroup Byattributes are placed into the same set, and clipping occurs in each set independent of other sets.

• Single Clipper：只有一个单一的Clipperfeature will be used.
• Multiple Clippers: AllClipperfeatures will be used.
• Clippers First：剪辑假设所有Clipperfeatures will enter the transformer before anyClippee特征。进一步Clipperfeatures that arrive after the firstClippee将用警告登录并丢弃。

This attribute (if specified) will be added with a value ofyesto any features output via either theInside要么Outside由变压器切割的端口和值没有到任何由变压器更改的输出功能。

Specifies where to take the measures and Z values from. IfClippee Onlyis selected, all measures and Z values of the Clipper will be dropped. If仅限剪刀is selected, all measures and Z values from the Clippee will be dropped.

When viewed in 2D (ignoring Z), a path (which may define the border of a polygon) may appear to be closed as shown in the left figure below. This same path, when viewed in 3D, may appear to be open as shown in the right figure below.

To specify how (and if) paths should be closed in 3D, select one of the listed modes.

模式	Description	Example
Extend	该Curve is extended so that all vertices are left at their original location.
Average	Subsequent vertices that are not connected, but share an x and a y value are combined into one vertex, whose Z value is the average of the original two.
First Wins	Subsequent vertices that are not connected, but share an x and a y value are combined into one vertex, whose Z value is taken from the first encountered vertex.
Last Wins	未连接的后续顶点，但共享x和y值组合成一个顶点，其z值从最后遇到的顶点取出。
Ignore	z值忽略。没有更改节点连接的方式。

This parameter specifies how to deal with geometries that have a measure, but are missing at least one value, or that have z values, but are missing at least one value.Dropwill cause the incomplete measure or z values to be removed.Use Default Valuewill fill in the missing values with a default value that is specified in theDefault Valueparameter.Computewill look at the values on either side of the missing value, and then provide an estimate.

该值用于Default ValueMeasures/Z Conflict Modeto flag missing measures and z values.

When using theCompute模式计算缺失测量值，可以考虑测量连续，和linearly interpolated from their neighbors, or they can beDiscrete，和taken exactly from the nearest neighbor.

This parameter directs what action should be taken withClippee完全放在剪刀边界的特征。

• Treat as Inside：躺在边界上的这些功能通过Inside港口。
• Treat as Outside：躺在边界上的这些功能通过Outside港口。
• treat: Points and line segments on the boundary are duplicated and output as bothInside和Outside.

If theCreate Aggregates参数是没有, then features that are clipped into multiple parts will not be aggregated, but rather each part will be output as a separate feature.

If set toYes, then contiguous lines that constitute the boundary of the output features will be left as separate segments in a path. The default is没有，这意味着除非它们具有不同的属性（例如，特征，测量和几何名称），否则这些线将在输出中加入较长的线路。

如果此参数设置为没有, theInsiderasters which were clipped will be equal to the intersections of the clippers and clippees. Otherwise, the intersections will be padded by nodata so that the extents are identical to those of the input rasters.

If theMerge Attributes参数是enabled, attributes on theClipperwill be merged onto theClippeeas defined by the parameters within the expandable group. Otherwise, no attribute merging will take place.

如果是属性Clipper和Clippee功能共享相同的名称，但不是从中开始的几何属性fme_, then they are deemed conflicted.

Merge Clipper: TheClippeefeature will retain all of its own un-conflicted attributes, and will additionally acquire any un-conflicted attributes that theClipperfeature has. This mode will handle conflicted attributes based on theConflict Resolutionparameter.

Prefix Clipper: TheClippee功能将保留其所有属性。除此之外Clippee将获得反映的属性Clipper功能的属性，名称为前缀Prefixparameter.

Only Use Clipper: TheClippeefeature will have all of its attributes removed, except geometry attributes that start withfme_. Then, all of the attributes from one (arbitrary)Clipperfeature will be placed onto theClippee.

Use Clippee: If a conflict occurs, theClippee将保持值。

Use Clipper: If a conflict occurs, the values of theClipperwill be transferred onto theClippee.

If the累积模式参数是set toPrefix Clipper，此值将添加到添加到的前缀属性Clippee特征来自Clipper特征。