.. 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_exercises_plot_exercise_8.py: Exercise 8 ========== Exercise 8 with matplotlib. .. image:: /intro/matplotlib/auto_examples/exercises/images/sphx_glr_plot_exercise_8_001.png :class: sphx-glr-single-img .. code-block:: python import numpy as np import matplotlib.pyplot as plt plt.figure(figsize=(8,5), dpi=80) plt.subplot(111) X = np.linspace(-np.pi, np.pi, 256,endpoint=True) C = np.cos(X) S = np.sin(X) plt.plot(X, C, color="blue", linewidth=2.5, linestyle="-", label="cosine") plt.plot(X, S, color="red", linewidth=2.5, linestyle="-", label="sine") ax = plt.gca() ax.spines['right'].set_color('none') ax.spines['top'].set_color('none') ax.xaxis.set_ticks_position('bottom') ax.spines['bottom'].set_position(('data',0)) ax.yaxis.set_ticks_position('left') ax.spines['left'].set_position(('data',0)) plt.xlim(X.min() * 1.1, X.max() * 1.1) plt.xticks([-np.pi, -np.pi/2, 0, np.pi/2, np.pi], [r'$-\pi$', r'$-\pi/2$', r'$0$', r'$+\pi/2$', r'$+\pi$']) plt.ylim(C.min() * 1.1, C.max() * 1.1) plt.yticks([-1, +1], [r'$-1$', r'$+1$']) plt.legend(loc='upper left') plt.show() **Total running time of the script:** ( 0 minutes 0.023 seconds) .. _sphx_glr_download_intro_matplotlib_auto_examples_exercises_plot_exercise_8.py: .. only :: html .. container:: sphx-glr-footer :class: sphx-glr-footer-example .. container:: sphx-glr-download :download:`Download Python source code: plot_exercise_8.py ` .. container:: sphx-glr-download :download:`Download Jupyter notebook: plot_exercise_8.ipynb ` .. only:: html .. rst-class:: sphx-glr-signature `Gallery generated by Sphinx-Gallery `_