# filters.transformation

The transformation filter applies an arbitrary rotation+translation transformation, represented as a 4x4 matrix, to each xyz triplet.

The filter does no checking to ensure the matrix is a valid affine transformation — buyer beware.

Note

The transformation filter does not apply any spatial reference information — if spatial reference information is desired, it must be specified on another filter.

Default Embedded Stage

This stage is enabled by default

Streamable Stage

This stage supports streaming operations

## Example

This example rotates the points around the z-axis while translating them.

    {
      "pipeline":[
        "untransformed.las",
        {
          "type":"filters.transformation",
          "matrix":"0 -1  0  1  1  0  0  2  0  0  1  3  0  0  0  1"
        },
        {
          "type":"writers.las",
          "filename":"transformed.las"
        }
      ]
    }

## Options

matrix
  A whitespace-delimited transformation matrix. The matrix is assumed to be presented in row-major order. Only matrices with sixteen elements are allowed.

## Notes

The transformation filter does not apply any spatial reference information — if spatial reference information is desired, it must be specified on another filter.