filters.crop

The crop filter removes points that fall outside or inside a cropping bounding box (2D), polygon, or point+distance. If more than one bounding region is specified, the filter will pass all input points through each bounding region, creating an output point set for each input crop region.

Default Embedded Stage

This stage is enabled by default

Streamable Stage

This stage supports streaming operations

The provided bounding regions are assumed to have the same spatial reference as the points unless the option a_srs provides an explicit spatial reference for bounding regions. If the point input consists of multiple point views with differing spatial references, one is chosen at random and assumed to be the spatial reference of the input bounding region. In this case a warning will be logged.

Example

{
  "pipeline":[
    "file-input.las",
    {
      "type":"filters.crop",
      "bounds":"([0,1000000],[0,1000000])"
    },
    {
      "type":"writers.las",
      "filename":"file-cropped.las"
    }
  ]
}

Options

bounds
The extent of the clipping rectangle, expressed in a string, eg: ([xmin, xmax], [ymin, ymax]) This option can be specified more than once.
polygon
The clipping polygon, expressed in a well-known text string, eg: POLYGON((0 0, 5000 10000, 10000 0, 0 0)) This option can be specified more than once.
outside
Invert the cropping logic and only take points outside the cropping bounds or polygon. [Default: false]
point
An array of WKT or GeoJSON 2D or 3D points. Requires distance.
distance
Distance in units of common X, Y, and Z Dimensions to crop circle or sphere in combination with point.
a_srs
Indicates the spatial reference of the bounding regions. If not provided, it is assumed that the spatial reference of the bounding region matches that of the points (if possible).