I had been having trouble for a while figuring out how to load jpgs
into a usable form on OS X. The optional PIL spkg that gets installed
through sage -i PIL-1.1.5.spkg would throw an IOError when I tried to
load in a jpeg, complaining that the jpeg decoder wasn't available.
I found a work around tonight, which was to install PIL through
macports (py25-pil is the package name). I already had libjpeg
installed through macports (jpeg is the package name). Then I just
went into the directory where PIL got installed, /opt/local/lib/
python2.5/site-packages/, and then copied the PIL folder and PIL.pth
into sage's python: /Applications/sage/local/lib/python/site-packages/
With that stuff there, I can now do
sage: import pylab
sage: imjpg = pylab.imread(DATA+'aarts02.jpg')
sage: pylab.imshow(imjpg)
sage: pylab.savefig('imjpg')
and I actually see an image.
If I can provide information or anything else helpful for turning this
hack into something that works the way sage is supposed to, please let
me know.
Regards,
JM
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