filters.returns

The Returns Filter takes a single PointView as its input and creates a PointView for each of the user-specified groups defined below.

“first” is defined as those points whose ReturnNumber is 1 when the NumberOfReturns is greater than 1.

“intermediate” is defined as those points whose ReturnNumber is greater than 1 and less than NumberOfReturns when NumberOfReturns is greater than 2.

“last” is defined as those points whose ReturnNumber is equal to NumberOfReturns when NumberOfReturns is greater than 1.

“only” is defined as those points whose NumberOfReturns is 1.

Default Embedded Stage

This stage is enabled by default

Example

This example creates two separate output files for the “last” and “only” returns.

[
    "input.las",
    {
        "type":"filters.returns",
        "groups":"last,only"
    },
    "output_#.las"
]

Options

groups

Comma-separated list of return number groupings. Valid options are “first”, “last”, “intermediate” or “only”. [Default: “last”]