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Date: Tue, 31 Mar 2015 10:47:53 +1100
Subject: Re: Image rotation issue
From: Chris Angelico <rosuav@gmail.com>
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Xref: csiph.com comp.lang.python:88355

On Tue, Mar 31, 2015 at 8:22 AM,  <kai.peters@gmail.com> wrote:
> rotimg = img.rotate(270) # rotation is counterclockwise

Unless the 90 and 270 cases are documented as being handled specially,
I'd look for a dedicated function for doing those changes. A quick
perusal of the docs showed up this:

http://pillow.readthedocs.org/en/latest/reference/Image.html#PIL.Image.Image.transpose

Is that any better, or is that doing the exact same thing as rotate()?

By the way:

> The black & white only device (1024 (X) x 1280 (Y)) expects the compressed data based on portrait mode, i.e. 8 pixels combined into one bytes for 1280 rows of 128 bytes.
>

This sounds to me like the fax standard. I wonder, can you make use of
a TIFF library to do some of your work for you?

ChrisA