.. _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 0.025 seconds) .. only :: html .. container:: sphx-glr-footer .. container:: sphx-glr-download :download:`Download Python source code: scatter_with_legend.py ` .. container:: sphx-glr-download :download:`Download Jupyter notebook: scatter_with_legend.ipynb ` .. only:: html .. rst-class:: sphx-glr-signature `Gallery generated by Sphinx-Gallery `_