[Image-SIG] pil rotate 90 bug ?

Charlie Clark charlie.clark at clark-consulting.eu
Thu Aug 4 21:28:21 CEST 2011

Am 28.07.2011, 11:43 Uhr, schrieb Jeremy Craven  
<c.j.craven at sheffield.ac.uk>:

> I have a program that has been working fine rotating images by arbitrary  
> angles.
> I just found that if I specify 90 degrees exactly then the image goes  
> crazy: only appears in left hand half of image and every other line is  
> black and image is stretched vertically.
> Any ideas if this is a bug or I am perhaps doing something in a  
> non-recommended way.
> I attach a cut down version of the code which shows the problem. It  
> reads "test_in.tif". It rotates it 90.0 and writes "test.tif". It  
> rotates it 89.99 and writes "test1.tif". The second output file looks  
> fine. The first is wonky.

Dear Jeremy,

first off - it's extremely uncourteous to post such a large e-mail to a  
mailing list. Much better to put the attachments on a temporary site  
somewhere. Secondly, all the images are black to me so I can't see any  
difference between them.

Charlie Clark
Managing Director
Clark Consulting & Research
German Office
Helmholtzstr. 20
D- 40215
Tel: +49-211-600-3657
Mobile: +49-178-782-6226

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