Description
When interpolating a raster surface from a LAS dataset using the natural neighbors interpolation method, the tool's performance will be substantially impacted if the data has an irregular boundary. Under such conditions, having a clip polygon that constrains the LAS dataset's interpolation zone to the areas where data exists will improve the performance of the interpolation process.
Solution
If the LAS points have an irregular, nonrectangular coverage, create a polygon feature that represents its area of coverage and add it to the LAS dataset as a clip polygon using the Add Files To LAS Dataset tool.