You are reading an old version of the documentation (v1.4.0). For the latest version see

Previous topic

misc example code:

Next topic

misc example code:

This Page

misc example code: image_thumbnail.pyΒΆ

[source code]

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, os, 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):

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 Search examples)