Contouggenerator.

These input features must be 3D. Other than points, lines and area geometries, they may also be raster, point cloud, and aggregate geometries. Raster features must represent a DEM (i.e., have a single band with no palette).

A minimum of 3 unique points are required to construct a surface model. Points with duplicate x and y values will be dropped.

这些输入功能必须是3D，并且可以驻留在聚合结构内。

Breakline边缘将在底层表面模型的边缘池中找到。有时，将分开断线边缘以允许表面模型的最佳三角测量。将删除具有重复x和y值的点。

该输出端口产生轮廓线。每个轮廓都是2D或3D取决于输出轮廓尺寸，并将其高度存储在指定的属性中Output Elevation Attribute. If contours are 3D, then their z values are equivalent to their elevation attribute values.

小费：The parameterConflict Resolution可以过滤出输入的子集点/线路确保良好的表面模型。

包含无效Z值的点的功能将输出到此端口。

Rejected features will have anfme_reimpe_code.attribute with one of the following values:INVALID_BREAKLINES_GEOMETRY_VERTICES,INVALID_GEOMETRY_DIMENSION,INVALID_GEOMETRY_VERTICES,Invalid_point_geometry_vertices.,INVALID_POINTS_GEOMETRY_RASTER_NUM_BANDS,Invalid_points_geometry_raster_num_palettes..

This parameter allows groups to be formed by attribute values. Zero or more attributes may be specified.

具有相同属性值的输入功能将放入同一组中。然后，变压器在每组输入特征上独立地运行。

如果此参数留空，则变压器将把整组输入功能视为一个组。

Note:How parallel processing works with FME: seeAbout Parallel Processingfor detailed information.

This parameter determines whether or not the transformer should perform the work across parallel processes. If it is enabled, a process will be launched for each group specified by theGroup By范围。

Parallel Processing Levels

For example, on a quad-core machine, minimal parallelism will result in two simultaneous FME processes. Extreme parallelism on an 8-core machine would result in 16 simultaneous processes.

You can experiment with this feature and view the information in the Windows Task Manager and the Workbench Log window.

No：这是默认行为。只有在存在所有输入时，处理将在此变换器中发生。

按组：此变压器将按顺序处理输入组。改变价值Group By参数的输入流将触发批量processing on the currently accumulating group. This will improve overall speed if groups are large/complex, but could cause undesired behavior if input groups are not truly ordered.

This parameter is used to determine which input points to add to the surface model as vertices. Specifying a value of 0 turns off vertex filtering.

小费：A larger value will speed up surface model construction. The larger the value, the more input points will be filtered out. For input files with millions – or even billions – of points, it becomes essential to increase this value.

当一个positive value for surface tolerance is specified, it works as follows. For each vertex that is being added to the model:

• If the x,y location is outside the 2D convex hull of the existing surface model, it is added to the model.
• 如果x，y位置位于现有表面模型的2D凸壳内：
  • The difference between the z value from the existing surface model and the z value of the vertex is calculated.
  • 将该差异与表面模型公差进行比较。
  • The vertex is only added to the surface model if the difference is greater than the surface tolerance; otherwise, the vertex is discarded.

此参数指定输出端口的高度属性的名称轮廓andDEMPoints，当在变压器上存在这些输出端口时。

This parameter specifies the elevation separation of the output contours.

This parameter specifies whether the output contours are 2D or 3D. 2D contours are equivalent to 3D contours, except that the z coordinates are dropped.

小费：当输入数据集足够大时，将此参数设置为2D将导致可见的性能改进。

This parameter controls whether input points on the contour interval are dropped, or perturbed. Not dropping or perturbing these points would result in topologically invalid contours.

• Perturb Input Points on Contour Interval：轮廓在Z方向上呈负偏移。扰动量是轮廓间隔的1％。
• Remove Input Points on Contour Interval: Input points on the contour interval are not added to the underlying surface model.