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Aug 22, 2014
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DOC : add note about np.matrix and pandas objects #3394

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DOC : add note about np.matrix and pandas objects
tacaswell Aug 22, 2014
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DOC : add examples of casting DataFrame and matrix
tacaswell Aug 22, 2014
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21 changes: 21 additions & 0 deletions doc/faq/usage_faq.rst
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Expand Up @@ -114,6 +114,27 @@ idea). When the figure is rendered, all of the artists are drawn to
the **canvas**. Most Artists are tied to an Axes; such an Artist
cannot be shared by multiple Axes, or moved from one to another.

.. _input_types:

Types of inputs to plotting functions
=====================================

All of plotting functions expect `np.array` or `np.ma.masked_array` as
input. Classes that are 'array-like' such as `pandas` data objects
and `np.matrix` may or may not work as intended. It is best to
convert these to `np.array` objects prior to plotting.

For example, to covert a `pandas.DataFrame` ::

a = pandas.DataFrame(np.random.rand(4,5), columns = list('abcde'))
a_asndarray = a.values

and to covert a `np.matrix` ::

b = np.matrix([[1,2],[3,4]])
b_asarray = np.asarray(b)



.. _pylab:

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