.. note:: :class: sphx-glr-download-link-note Click :ref:`here ` to download the full example code .. rst-class:: sphx-glr-example-title .. _sphx_glr_intro_matplotlib_auto_examples_plot_contour.py: Displaying the contours of a function ====================================== An example showing how to display the contours of a function with matplotlib. .. image:: /intro/matplotlib/auto_examples/images/sphx_glr_plot_contour_001.png :class: sphx-glr-single-img .. code-block:: python import numpy as np import matplotlib.pyplot as plt def f(x,y): return (1 - x / 2 + x**5 + y**3) * np.exp(-x**2 -y**2) n = 256 x = np.linspace(-3, 3, n) y = np.linspace(-3, 3, n) X,Y = np.meshgrid(x, y) plt.axes([0.025, 0.025, 0.95, 0.95]) plt.contourf(X, Y, f(X, Y), 8, alpha=.75, cmap=plt.cm.hot) C = plt.contour(X, Y, f(X, Y), 8, colors='black', linewidth=.5) plt.clabel(C, inline=1, fontsize=10) plt.xticks([]) plt.yticks([]) plt.show() **Total running time of the script:** ( 0 minutes 0.063 seconds) .. _sphx_glr_download_intro_matplotlib_auto_examples_plot_contour.py: .. only :: html .. container:: sphx-glr-footer :class: sphx-glr-footer-example .. container:: sphx-glr-download :download:`Download Python source code: plot_contour.py ` .. container:: sphx-glr-download :download:`Download Jupyter notebook: plot_contour.ipynb ` .. only:: html .. rst-class:: sphx-glr-signature `Gallery generated by Sphinx-Gallery `_