[Numpy-svn] [numpy/numpy] 8969da: BUG: Fixes #5184 gradient calculation behavior at ...

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/numpy/numpy
  Commit: 8969da59ea9803b81b0dcb2fab3f41d4b168bc68
      https://github.com/numpy/numpy/commit/8969da59ea9803b81b0dcb2fab3f41d4b168bc68
  Author: David M Fobes <pseudocubic at gmail.com>
  Date:   2014-10-16 (Thu, 16 Oct 2014)

  Changed paths:
    M numpy/lib/function_base.py
    M numpy/lib/tests/test_function_base.py

  Log Message:
  -----------
  BUG: Fixes #5184 gradient calculation behavior at boundaries

* Previous expected behavior was that the gradient is computed using central
  differences in the interior and first differences at the boundaries.

* gradient was updated in v1.9.0 so that second-order accurate calculations are
  done at the boundaries, but this breaks expected behavior with old code, so
  `edge_order` keyword (Default: 1) is added to specify whether first or second
  order calculations at the boundaries should be used.

* Since the second argument is *varargs, in order to maintain compatibility
  with old code and compatibility with python 2.6 & 2.7, **kwargs is used, and
  all kwargs that are not `edge_order` raise an error, listing the offending
  kwargs.

* Tests and documentation updated to reflect this change.

* Added `.. versionadded:: 1.9.1` to the new optional kwarg `edge_order`
  documentation, and specified supported `edge_order` kwarg values.

* Clarified documentation for `varargs`.

* Made indentation in docstring consistent with other docstring styles.

* Examples corrected


  Commit: 4c0747d5c2cb3c961f7246cd9222b89bdcf2ce42
      https://github.com/numpy/numpy/commit/4c0747d5c2cb3c961f7246cd9222b89bdcf2ce42
  Author: Charles Harris <charlesr.harris at gmail.com>
  Date:   2014-10-16 (Thu, 16 Oct 2014)

  Changed paths:
    M numpy/lib/function_base.py
    M numpy/lib/tests/test_function_base.py

  Log Message:
  -----------
  Merge pull request #5186 from pseudocubic/gradient-boundary-order-keyword

BUG: Fixes #5184 gradient calculation behavior at boundaries


Compare: https://github.com/numpy/numpy/compare/51f0976c1ca1...4c0747d5c2cb