.. DO NOT EDIT.
.. THIS FILE WAS AUTOMATICALLY GENERATED BY SPHINX-GALLERY.
.. TO MAKE CHANGES, EDIT THE SOURCE PYTHON FILE:
.. "11_demos\python_packages\numpy\demo_create.py"
.. LINE NUMBERS ARE GIVEN BELOW.

.. only:: html

    .. note::
        :class: sphx-glr-download-link-note

        :ref:`Go to the end <sphx_glr_download_11_demos_python_packages_numpy_demo_create.py>`
        to download the full example code.

.. rst-class:: sphx-glr-example-title

.. _sphx_glr_11_demos_python_packages_numpy_demo_create.py:

Create array
===============

This demo shows the features of ``numpy`` (https://numpy.org/doc/stable/user/quickstart.html).

.. GENERATED FROM PYTHON SOURCE LINES 6-13

.. code-block:: Python


    import numpy as np
    import matplotlib.pyplot as plt


    array = np.arange(15).reshape(3, 5)








.. GENERATED FROM PYTHON SOURCE LINES 15-17

.. code-block:: Python

    array.shape





.. rst-class:: sphx-glr-script-out

 .. code-block:: none


    (3, 5)



.. GENERATED FROM PYTHON SOURCE LINES 18-20

.. code-block:: Python

    array.ndim





.. rst-class:: sphx-glr-script-out

 .. code-block:: none


    2



.. GENERATED FROM PYTHON SOURCE LINES 21-23

.. code-block:: Python

    array.dtype.name





.. rst-class:: sphx-glr-script-out

 .. code-block:: none


    'int32'



.. GENERATED FROM PYTHON SOURCE LINES 24-26

.. code-block:: Python

    array.itemsize





.. rst-class:: sphx-glr-script-out

 .. code-block:: none


    4



.. GENERATED FROM PYTHON SOURCE LINES 27-29

.. code-block:: Python

    array.size





.. rst-class:: sphx-glr-script-out

 .. code-block:: none


    15



.. GENERATED FROM PYTHON SOURCE LINES 30-32

.. code-block:: Python

    type(array)








.. GENERATED FROM PYTHON SOURCE LINES 33-34

**dtype, dimensions**

.. GENERATED FROM PYTHON SOURCE LINES 34-37

.. code-block:: Python

    array2 = np.array([1.2, 3.5, 5.1])
    array2.dtype.name





.. rst-class:: sphx-glr-script-out

 .. code-block:: none


    'float64'



.. GENERATED FROM PYTHON SOURCE LINES 38-40

.. code-block:: Python

    np.array([(1.5, 2, 3), (4, 5, 6)])





.. rst-class:: sphx-glr-script-out

 .. code-block:: none


    array([[1.5, 2. , 3. ],
           [4. , 5. , 6. ]])



.. GENERATED FROM PYTHON SOURCE LINES 41-43

.. code-block:: Python

    np.array([[1, 2], [3, 4]], dtype=complex)





.. rst-class:: sphx-glr-script-out

 .. code-block:: none


    array([[1.+0.j, 2.+0.j],
           [3.+0.j, 4.+0.j]])



.. GENERATED FROM PYTHON SOURCE LINES 44-45

**Zeros, ones, empty**

.. GENERATED FROM PYTHON SOURCE LINES 45-47

.. code-block:: Python

    np.zeros((3, 4))





.. rst-class:: sphx-glr-script-out

 .. code-block:: none


    array([[0., 0., 0., 0.],
           [0., 0., 0., 0.],
           [0., 0., 0., 0.]])



.. GENERATED FROM PYTHON SOURCE LINES 48-50

.. code-block:: Python

    np.ones((2, 3, 4), dtype=np.int16)





.. rst-class:: sphx-glr-script-out

 .. code-block:: none


    array([[[1, 1, 1, 1],
            [1, 1, 1, 1],
            [1, 1, 1, 1]],

           [[1, 1, 1, 1],
            [1, 1, 1, 1],
            [1, 1, 1, 1]]], dtype=int16)



.. GENERATED FROM PYTHON SOURCE LINES 51-53

.. code-block:: Python

    np.empty((2, 10))





.. rst-class:: sphx-glr-script-out

 .. code-block:: none


    array([[-2.3107758 , -2.47187343, -2.47187343, -2.63261058, -2.63261058,
            -2.79310345, -2.79310345, -2.95344595, -2.95344595, -3.        ],
           [-2.22936756, -2.34787573, -2.34787573, -2.46687606, -2.46687606,
            -2.5862069 , -2.5862069 , -2.70573978, -2.70573978, -2.74047929]])



.. GENERATED FROM PYTHON SOURCE LINES 54-55

**Sequence of numbers**

.. GENERATED FROM PYTHON SOURCE LINES 55-58

.. code-block:: Python

    np.arange(10, 30, 5)
    np.arange(0, 2, 0.3)





.. rst-class:: sphx-glr-script-out

 .. code-block:: none


    array([0. , 0.3, 0.6, 0.9, 1.2, 1.5, 1.8])



.. GENERATED FROM PYTHON SOURCE LINES 59-61

.. code-block:: Python

    np.linspace(0, 2, 9)





.. rst-class:: sphx-glr-script-out

 .. code-block:: none


    array([0.  , 0.25, 0.5 , 0.75, 1.  , 1.25, 1.5 , 1.75, 2.  ])



.. GENERATED FROM PYTHON SOURCE LINES 62-69

.. code-block:: Python

    x = np.linspace(0, 2 * np.pi, 100)
    f = np.sin(x)

    plt.figure()
    plt.plot(f)
    plt.show()




.. image-sg:: /11_demos/python_packages/numpy/images/sphx_glr_demo_create_001.png
   :alt: demo create
   :srcset: /11_demos/python_packages/numpy/images/sphx_glr_demo_create_001.png
   :class: sphx-glr-single-img





.. GENERATED FROM PYTHON SOURCE LINES 70-71

**Reshape**

.. GENERATED FROM PYTHON SOURCE LINES 71-73

.. code-block:: Python

    np.arange(12).reshape(4, 3)





.. rst-class:: sphx-glr-script-out

 .. code-block:: none


    array([[ 0,  1,  2],
           [ 3,  4,  5],
           [ 6,  7,  8],
           [ 9, 10, 11]])



.. GENERATED FROM PYTHON SOURCE LINES 74-75

.. code-block:: Python

    c = np.arange(24).reshape(2, 3, 4)








.. rst-class:: sphx-glr-timing

   **Total running time of the script:** (0 minutes 0.063 seconds)


.. _sphx_glr_download_11_demos_python_packages_numpy_demo_create.py:

.. only:: html

  .. container:: sphx-glr-footer sphx-glr-footer-example

    .. container:: sphx-glr-download sphx-glr-download-jupyter

      :download:`Download Jupyter notebook: demo_create.ipynb <demo_create.ipynb>`

    .. container:: sphx-glr-download sphx-glr-download-python

      :download:`Download Python source code: demo_create.py <demo_create.py>`

    .. container:: sphx-glr-download sphx-glr-download-zip

      :download:`Download zipped: demo_create.zip <demo_create.zip>`