writers.derivative¶

The Derivative Writer supports writing of primary topographic attributes.

Example¶

<?xml version="1.0" encoding="utf-8"?>
<Pipeline version="1.0">
  <Writer type="writers.derivative">
    <Option name="filename">
      outputfile.tiff
    </Option>
    <Option name="primitive_type">
      slope_d8
    </Option>
    <Reader type="readers.las">
      <Option name="filename">
        inputfile.las
      </Option>
    </Reader>
  </Writer>
</Pipeline>

Options¶

filename

GeoTiff file to write. [Required]

primitive_type

Topographic attribute to compute. [Default: slope_d8]

slope_d8
slope_fd
aspect_d8
aspect_fd
contour_curvature
profile_curvature
tangential_curvature
total_curvature
hillshade
catchment_area

grid_dist_x, grid_dist_y

Size of grid cell in X and Y dimensions using native units of the input point cloud. [Default: 15.0]