PointCloudonRasterComponentsEtter.

点云功能通过此端口输入。

Raster features are input through this port.

点云功能具有更新的组件值，通过此端口输出。

IfGroup Byattributes are selected, features with the same values in theGroup By属性被分组在一起，并且栅格仅用于在同一组中设置点云的组件值。

注意：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 Byparameter.

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.

您可以尝试此功能，并在Windows任务管理器和Workbench日志窗口中查看信息。

没有：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。

By Group：此变压器将按顺序处理输入组。改变价值Group Byparameter on the input stream will trigger batch 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.

Specifies which point cloud components should be set from the corresponding raster(s).

• Color指定了color_red,color_green，和color_bluecomponents of a point cloud should be set. In this case, the input rasters should have three selected bands.
• Custom允许规范任意组件列表。

When specifying a custom list, the following values must be specified for each component:

• 带specifies the band index from which values will be taken.
• Componentspecifies the component whose values will be set.
• 默认值指定的值that will be set for points that are disjoint from all rasters.

This parameter specifies the behavior when a point lies on a raster nodata value. If set to Yes, the point component value will be set to the nodata value. If set to No, the raster will be skipped, and the next raster checked. If no rasters are found to cover the point, then the Default Values Overwrite Data parameter determines the behavior.

This parameter specifies the behavior when no value can be found for a point from any raster, but the component already existed on the input point cloud. If set to Yes, the component value from the input point cloud will be preserved. If set to No, the component value will be set to the default value, either from the default value list or the FME default.

Cell values are interpolated to arrive at point cloud component values.

• Nearest Neighbor is the fastest but produces the poorest quality.
• 双线性提供合理的中间选项。
• Bicubic is the slowest but produces the best quality.
• 平均4和平均16具有类似于双线性的性能，可用于数字栅格，例如DEM。