.. only:: html .. note:: :class: sphx-glr-download-link-note Click :ref:`here ` to download the full example code .. rst-class:: sphx-glr-example-title .. _sphx_glr_gallery_lines_bars_and_markers_scatter_piecharts.py: =================================== Scatter plot with pie chart markers =================================== This example makes custom 'pie charts' as the markers for a scatter plot. Thanks to Manuel Metz for the example. .. code-block:: default import numpy as np import matplotlib.pyplot as plt # first define the ratios r1 = 0.2 # 20% r2 = r1 + 0.4 # 40% # define some sizes of the scatter marker sizes = np.array([60, 80, 120]) # calculate the points of the first pie marker # these are just the origin (0, 0) + some (cos, sin) points on a circle x1 = np.cos(2 * np.pi * np.linspace(0, r1)) y1 = np.sin(2 * np.pi * np.linspace(0, r1)) xy1 = np.row_stack([[0, 0], np.column_stack([x1, y1])]) s1 = np.abs(xy1).max() x2 = np.cos(2 * np.pi * np.linspace(r1, r2)) y2 = np.sin(2 * np.pi * np.linspace(r1, r2)) xy2 = np.row_stack([[0, 0], np.column_stack([x2, y2])]) s2 = np.abs(xy2).max() x3 = np.cos(2 * np.pi * np.linspace(r2, 1)) y3 = np.sin(2 * np.pi * np.linspace(r2, 1)) xy3 = np.row_stack([[0, 0], np.column_stack([x3, y3])]) s3 = np.abs(xy3).max() fig, ax = plt.subplots() ax.scatter(range(3), range(3), marker=xy1, s=s1**2 * sizes, facecolor='blue') ax.scatter(range(3), range(3), marker=xy2, s=s2**2 * sizes, facecolor='green') ax.scatter(range(3), range(3), marker=xy3, s=s3**2 * sizes, facecolor='red') plt.show() .. image:: /gallery/lines_bars_and_markers/images/sphx_glr_scatter_piecharts_001.png :alt: scatter piecharts :class: sphx-glr-single-img ------------ References """""""""" The use of the following functions, methods, classes and modules is shown in this example: .. code-block:: default import matplotlib matplotlib.axes.Axes.scatter matplotlib.pyplot.scatter .. rst-class:: sphx-glr-script-out Out: .. code-block:: none .. _sphx_glr_download_gallery_lines_bars_and_markers_scatter_piecharts.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: scatter_piecharts.py ` .. container:: sphx-glr-download sphx-glr-download-jupyter :download:`Download Jupyter notebook: scatter_piecharts.ipynb ` .. only:: html .. rst-class:: sphx-glr-signature Keywords: matplotlib code example, codex, python plot, pyplot `Gallery generated by Sphinx-Gallery `_