.. _sphx_glr_gallery_color_color_by_yvalue.py: ================ Color By y-value ================ Use masked arrays to plot a line with different colors by y-value. .. image:: /gallery/color/images/sphx_glr_color_by_yvalue_001.png :align: center .. code-block:: python import numpy as np import matplotlib.pyplot as plt t = np.arange(0.0, 2.0, 0.01) s = np.sin(2 * np.pi * t) upper = 0.77 lower = -0.77 supper = np.ma.masked_where(s < upper, s) slower = np.ma.masked_where(s > lower, s) smiddle = np.ma.masked_where(np.logical_or(s < lower, s > upper), s) fig, ax = plt.subplots() ax.plot(t, smiddle, t, slower, t, supper) plt.show() **Total running time of the script:** ( 0 minutes 0.018 seconds) .. only :: html .. container:: sphx-glr-footer .. container:: sphx-glr-download :download:`Download Python source code: color_by_yvalue.py ` .. container:: sphx-glr-download :download:`Download Jupyter notebook: color_by_yvalue.ipynb ` .. only:: html .. rst-class:: sphx-glr-signature `Gallery generated by Sphinx-Gallery `_