.. _sphx_glr_gallery_lines_bars_and_markers_nan_test.py: ======== Nan Test ======== Example: simple line plots with NaNs inserted. .. image:: /gallery/lines_bars_and_markers/images/sphx_glr_nan_test_001.png :align: center .. code-block:: python import numpy as np import matplotlib.pyplot as plt t = np.arange(0.0, 1.0 + 0.01, 0.01) s = np.cos(2 * 2*np.pi * t) t[41:60] = np.nan plt.subplot(2, 1, 1) plt.plot(t, s, '-', lw=2) plt.xlabel('time (s)') plt.ylabel('voltage (mV)') plt.title('A sine wave with a gap of NaNs between 0.4 and 0.6') plt.grid(True) plt.subplot(2, 1, 2) t[0] = np.nan t[-1] = np.nan plt.plot(t, s, '-', lw=2) plt.title('Also with NaN in first and last point') plt.xlabel('time (s)') plt.ylabel('more nans') plt.grid(True) plt.tight_layout() plt.show() **Total running time of the script:** ( 0 minutes 0.057 seconds) .. only :: html .. container:: sphx-glr-footer .. container:: sphx-glr-download :download:`Download Python source code: nan_test.py ` .. container:: sphx-glr-download :download:`Download Jupyter notebook: nan_test.ipynb ` .. only:: html .. rst-class:: sphx-glr-signature `Gallery generated by Sphinx-Gallery `_