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Diffstat (limited to 'doc/source')
| -rw-r--r-- | doc/source/reference/arrays.maskna.rst | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/doc/source/reference/arrays.maskna.rst b/doc/source/reference/arrays.maskna.rst index 2faabde83..bd9516eba 100644 --- a/doc/source/reference/arrays.maskna.rst +++ b/doc/source/reference/arrays.maskna.rst @@ -14,6 +14,11 @@ core ndarray. This system is highly flexible, allowing NAs to be used with any underlying dtype, and supports creating multiple views of the same data with different choices of NAs. +.. note:: The NA API is *experimental*, and may undergo changes in future + versions of NumPy. The current implementation based on masks will likely be + supplemented by a second one based on bit-patterns, and it is possible that + a difference will be made between missing and ignored data. + Other Missing Data Approaches ============================= |