

.. _sphx_glr_gallery_lines_bars_and_markers_scatter_with_legend.py:


===========================
Scatter plots with a legend
===========================

Also demonstrates how transparency of the markers
can be adjusted by giving ``alpha`` a value between
0 and 1.




.. image:: /gallery/lines_bars_and_markers/images/sphx_glr_scatter_with_legend_001.png
    :align: center





.. code-block:: python


    import matplotlib.pyplot as plt
    from numpy.random import rand


    fig, ax = plt.subplots()
    for color in ['red', 'green', 'blue']:
        n = 750
        x, y = rand(2, n)
        scale = 200.0 * rand(n)
        ax.scatter(x, y, c=color, s=scale, label=color,
                   alpha=0.3, edgecolors='none')

    ax.legend()
    ax.grid(True)

    plt.show()

**Total running time of the script:** ( 0 minutes  0.050 seconds)



.. container:: sphx-glr-footer


  .. container:: sphx-glr-download

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



  .. container:: sphx-glr-download

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

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

    `Generated by Sphinx-Gallery <https://sphinx-gallery.readthedocs.io>`_
