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[Bug 472978] Re: Save to pgm actually saves to pnm

To: phatch-dev@xxxxxxxxxxxxxxxxxxx
From: Juho Vepsäläinen <bebraw@xxxxxxxxx>
Date: Sat, 12 Dec 2009 08:50:12 -0000
Reply-to: Bug 472978 <472978@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx

Apparently PIL saves PGM internally as PPM unless you convert the image
to grayscale first. Add proper check for format to fix the issue
(perhaps to imtools save?).

Here's a test case I used to verify this behavior:
from Image import open

im = open('Lenna.png')

gim = im.convert('L')
gim.save('Lenna1.pgm')
im.save('Lenna2.pgm')
im.save('Lenna3.ppm')

-- 
Save to pgm actually saves to pnm
https://bugs.launchpad.net/bugs/472978
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Status in Phatch = Photo & Batch!: Incomplete
Status in “phatch” package in Ubuntu: Incomplete

Bug description:
Binary package hint: phatch

When i save to PGM format, it actually saves to PNM. Being PGM a grayscale format it would be very usefull we could save directly to PGM instead of PNM.