.. 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_images_contours_and_fields_spy_demos.py: ========= Spy Demos ========= Plot the sparsity pattern of arrays. .. code-block:: default import matplotlib.pyplot as plt import numpy as np # Fixing random state for reproducibility np.random.seed(19680801) fig, axs = plt.subplots(2, 2) ax1 = axs[0, 0] ax2 = axs[0, 1] ax3 = axs[1, 0] ax4 = axs[1, 1] x = np.random.randn(20, 20) x[5, :] = 0. x[:, 12] = 0. ax1.spy(x, markersize=5) ax2.spy(x, precision=0.1, markersize=5) ax3.spy(x) ax4.spy(x, precision=0.1) plt.show() .. image:: /gallery/images_contours_and_fields/images/sphx_glr_spy_demos_001.png :alt: spy demos :class: sphx-glr-single-img ------------ References """""""""" The use of the following functions, methods and classes is shown in this example: .. code-block:: default import matplotlib matplotlib.axes.Axes.spy matplotlib.pyplot.spy .. rst-class:: sphx-glr-script-out Out: .. code-block:: none .. _sphx_glr_download_gallery_images_contours_and_fields_spy_demos.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: spy_demos.py ` .. container:: sphx-glr-download sphx-glr-download-jupyter :download:`Download Jupyter notebook: spy_demos.ipynb ` .. only:: html .. rst-class:: sphx-glr-signature Keywords: matplotlib code example, codex, python plot, pyplot `Gallery generated by Sphinx-Gallery `_