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-rw-r--r--doc/source/reference/maskedarray.rst7
1 files changed, 6 insertions, 1 deletions
diff --git a/doc/source/reference/maskedarray.rst b/doc/source/reference/maskedarray.rst
index aae06c361..c2deb3ba1 100644
--- a/doc/source/reference/maskedarray.rst
+++ b/doc/source/reference/maskedarray.rst
@@ -1,14 +1,19 @@
.. _maskedarray:
+*************
+Masked arrays
+*************
Masked arrays are arrays that may have missing or invalid entries.
The :mod:`numpy.ma` module provides a nearly work-alike replacement for numpy
that supports data arrays with masks.
+.. index::
+ single: masked arrays
.. toctree::
:maxdepth: 2
maskedarray.generic
maskedarray.baseclass
- routines.ma \ No newline at end of file
+ routines.ma