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Diffstat (limited to 'doc/source/user/absolute_beginners.rst')
| -rw-r--r-- | doc/source/user/absolute_beginners.rst | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/doc/source/user/absolute_beginners.rst b/doc/source/user/absolute_beginners.rst index bb570f622..27e9e1f63 100644 --- a/doc/source/user/absolute_beginners.rst +++ b/doc/source/user/absolute_beginners.rst @@ -391,7 +391,7 @@ this array to an array with three rows and two columns:: With ``np.reshape``, you can specify a few optional parameters:: - >>> numpy.reshape(a, newshape=(1, 6), order='C') + >>> np.reshape(a, newshape=(1, 6), order='C') array([[0, 1, 2, 3, 4, 5]]) ``a`` is the array to be reshaped. @@ -613,7 +613,7 @@ How to create an array from existing data ----- -You can easily use create a new array from a section of an existing array. +You can easily create a new array from a section of an existing array. Let's say you have this array: @@ -899,12 +899,18 @@ You can aggregate matrices the same way you aggregated vectors:: .. image:: images/np_matrix_aggregation.png You can aggregate all the values in a matrix and you can aggregate them across -columns or rows using the ``axis`` parameter:: +columns or rows using the ``axis`` parameter. To illustrate this point, let's +look at a slightly modified dataset:: + >>> data = np.array([[1, 2], [5, 3], [4, 6]]) + >>> data + array([[1, 2], + [5, 3], + [4, 6]]) >>> data.max(axis=0) array([5, 6]) >>> data.max(axis=1) - array([2, 4, 6]) + array([2, 5, 6]) .. image:: images/np_matrix_aggregation_row.png |