.. only:: html

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

        Click :ref:`here <sphx_glr_download_auto_data_analysis_graphics_plot_visualize_clouds.py>`     to download the full example code
    .. rst-class:: sphx-glr-example-title

    .. _sphx_glr_auto_data_analysis_graphics_plot_visualize_clouds.py:


Visualize clouds
================

In this example we are going to draw clouds of points from a data sample.


.. code-block:: default

    from __future__ import print_function
    import openturns as ot
    import openturns.viewer as viewer
    from matplotlib import pylab as plt
    ot.Log.Show(ot.Log.NONE)








Create 2-d samples to visualize


.. code-block:: default

    N = 500
    R = ot.CorrelationMatrix(2)
    R[0,1] = -0.7
    sample1 = ot.Normal([1.0]*2, [1.0]*2, R).getSample(N) # 2d N(1,1) with correlation
    sample2 = ot.Normal(2).getSample(N) # 2d N(0,1) independent








Create cloud drawables


.. code-block:: default

    cloud1 = ot.Cloud(sample1, 'blue', 'fsquare', 'First Cloud')
    cloud2 = ot.Cloud(sample2, 'red', 'fsquare', 'Second Cloud')

    # Then, assemble it into a graph
    myGraph2d = ot.Graph('2d clouds', 'x1', 'x2', True, 'topright')
    myGraph2d.add(cloud1)
    myGraph2d.add(cloud2)
    view = viewer.View(myGraph2d)




.. image:: /auto_data_analysis/graphics/images/sphx_glr_plot_visualize_clouds_001.png
    :alt: 2d clouds
    :class: sphx-glr-single-img





Create a 3-d sample


.. code-block:: default

    mean = [0.0] * 3
    sigma = [2.0, 1.5, 1.0]
    R = ot.CorrelationMatrix(3)
    R[0, 1] = 0.8
    R[1, 2] = -0.5
    N = 500
    sample3 = ot.Normal(mean, sigma, R).getSample(N)








Draw clouds pairs


.. code-block:: default

    graph3 = ot.VisualTest.DrawPairs(sample3)
    graph3.setTitle('3d clouds')
    view = viewer.View(graph3)
    plt.show()



.. image:: /auto_data_analysis/graphics/images/sphx_glr_plot_visualize_clouds_002.png
    :alt: 3d clouds
    :class: sphx-glr-single-img






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

   **Total running time of the script:** ( 0 minutes  0.282 seconds)


.. _sphx_glr_download_auto_data_analysis_graphics_plot_visualize_clouds.py:


.. only :: html

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



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

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



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

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


.. only:: html

 .. rst-class:: sphx-glr-signature

    `Gallery generated by Sphinx-Gallery <https://sphinx-gallery.github.io>`_