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| author | Mark Wiebe <mwwiebe@gmail.com> | 2011-08-05 14:31:04 -0500 |
|---|---|---|
| committer | Charles Harris <charlesr.harris@gmail.com> | 2011-08-27 07:26:52 -0600 |
| commit | d54c93d29bc9ac2d32b18047e085b88afa9f7095 (patch) | |
| tree | f3b99117e056f71861155434dda9eff3dec71014 /doc | |
| parent | 79f0dd9179fb7639547aac6d975a21648fe52c45 (diff) | |
| download | numpy-d54c93d29bc9ac2d32b18047e085b88afa9f7095.tar.gz | |
ENH: missingdata: Adding NA support to various methods
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/release/2.0.0-notes.rst | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/doc/release/2.0.0-notes.rst b/doc/release/2.0.0-notes.rst index a040f503b..683f24eac 100644 --- a/doc/release/2.0.0-notes.rst +++ b/doc/release/2.0.0-notes.rst @@ -2,6 +2,7 @@ NumPy 2.0.0 Release Notes ========================= +[Possibly 1.7.0 release notes, as ABI compatibility is still being maintained] Highlights ========== @@ -10,6 +11,30 @@ Highlights New features ============ +Support for NA missing values similar to those in R has been implemented. +This was done by adding optional NA masks to the core array object. + +Support for NA is not complete, here is a list of the things that do and +do not work with NA values: + +What works with NA: + * Basic indexing and slicing, as well as full boolean mask indexing. + * All element-wise ufuncs. + * UFunc.reduce methods, with a new skipna parameter. + * Array methods: + + ndarray.clip, + +What doesn't work with NA: + * Fancy indexing, such as with lists and partial boolean masks. + * UFunc.reduce of multi-dimensional arrays, with skipna=True and a ufunc + that doesn't have an identity. + * UFunc.accumulate, UFunc.reduceat. + * np.logical_and, np.logical_or, np.all, and np.any don't satisfy the + rules NA | True == True, and NA & False == False yet. + * Array methods: + + ndarray.argmax, ndarray.argmin, + + Custom formatter for printing arrays ------------------------------------ |