.. _api-watermark_image: api example code: watermark_image.py ==================================== .. plot:: /home/mdboom/Work/builds/matplotlib/doc/mpl_examples/api/watermark_image.py :: """ Use a PNG file as a watermark """ from __future__ import print_function import numpy as np import matplotlib.cbook as cbook import matplotlib.image as image import matplotlib.pyplot as plt datafile = cbook.get_sample_data('logo2.png', asfileobj=False) print ('loading %s' % datafile) im = image.imread(datafile) im[:,:,-1] = 0.5 # set the alpha channel fig, ax = plt.subplots() ax.plot(np.random.rand(20), '-o', ms=20, lw=2, alpha=0.7, mfc='orange') ax.grid() fig.figimage(im, 10, 10) plt.show() Keywords: python, matplotlib, pylab, example, codex (see :ref:`how-to-search-examples`)