radius_assign.md

filter radius assign

Purpose

The radius assign filter overwrites the output_dimension_ dimension with boolean values:

• 1 if the point has any neighbor with a distance lower than radius_ that belongs to the domain reference_domain_
• 0 otherwise.

Example

This pipeline updates the Keypoint dimension of all points with classification 1 to 2 (unclassified and ground) that are closer than 1 meter from a point with classification 6 (building)

  [
     "file-input.las",
      {
          "type" : "filters.radius_assign",
          "src_domain" : "Classification[1:2]",
          "reference_domain" : "Classification[6:6]",
          "radius" : 1,
	  	  "output_dimension": "radius",
	  	  "is3d": True
      },
      "output.las"
  ]

Options

src_domain : A :ref:range <ranges> which selects points to be processed by the filter. Can be specified multiple times. Points satisfying any range will be processed

reference_domain : A :ref:range <ranges> which selects points that can are considered as potential neighbors. Can be specified multiple times.

radius : An positive float which specifies the radius for the neighbors search.

output_dimension: The name of the new dimension'. [Default: radius]

is3d: Search in 3d (as a ball). [Default: false]

max2d_above: If search in 2d : upward maximum distance in Z for potential neighbors (corresponds to a search in a cylinder with a height = max2d_above above the source point). Values < 0 mean infinite height [Default: -1.]

max2d_below: If search in 2d : upward maximum distance in Z for potential neighbors (corresponds to a search in a cylinder with a height = max2d_below below the source point). Values < 0 mean infinite height [Default: -1.]