.. _misc-image_thumbnail:

misc example code: image_thumbnail.py
=====================================

[`source code <image_thumbnail.py>`_]

::

    # -*- noplot -*-
    """
    You can use matplotlib to generate thumbnails from existing images.
    matplotlib natively supports PNG files on the input side, and other
    image types transparently if your have PIL installed
    """
    
    from __future__ import print_function
    # build thumbnails of all images in a directory
    import sys
    import os
    import glob
    import matplotlib.image as image
    
    
    if len(sys.argv) != 2:
        print('Usage: python %s IMAGEDIR' % __file__)
        raise SystemExit
    indir = sys.argv[1]
    if not os.path.isdir(indir):
        print('Could not find input directory "%s"' % indir)
        raise SystemExit
    
    outdir = 'thumbs'
    if not os.path.exists(outdir):
        os.makedirs(outdir)
    
    for fname in glob.glob(os.path.join(indir, '*.png')):
        basedir, basename = os.path.split(fname)
        outfile = os.path.join(outdir, basename)
        fig = image.thumbnail(fname, outfile, scale=0.15)
        print('saved thumbnail of %s to %s' % (fname, outfile))
    

Keywords: python, matplotlib, pylab, example, codex (see :ref:`how-to-search-examples`)