[pdal-commits] [PDAL/PDAL] d89c03: Replace and fix diffX/diffY lambdas

[GitHub]

  Branch: refs/heads/diffX_diffY_refactor_and_tests
  Home:   https://github.com/PDAL/PDAL
  Commit: d89c03e85da5c1bc6631fdc946c6223fba537dc5
      https://github.com/PDAL/PDAL/commit/d89c03e85da5c1bc6631fdc946c6223fba537dc5
  Author: Bradley J Chambers <brad.chambers at gmail.com>
  Date:   2016-11-28 (Mon, 28 Nov 2016)

  Changed paths:
    M filters/smrf/SMRFilter.cpp
    M include/pdal/EigenUtils.hpp
    M test/unit/EigenTest.cpp

  Log Message:
  -----------
  Replace and fix diffX/diffY lambdas

Replace with numerical gradient result much like you would expect from MATLAB.
Add some tests to make sure it's all working as expected.