FME considers a *.rds data file and a *.rdx index file with the same root name to be a dataset. The user should select the index file as the source dataset. A color file and timestamp file, also with the same root name, will also be included if they are present. These files will add RGB and / or timestamp components to each point in the point cloud. Each dataset contains a single FME point cloud feature. The index is used for efficient access when clipping the input to a bounding box.