Hi Alan,
On 19.09.06, Alan G Isaac wrote:
> On Tue, 19 Sep 2006, Simon Burton apparently wrote:
> > if you really do have a bitmap then PIL is the answer.
>
> OK. If I understand correctly,
> I can use the same string for both.
> That is, if my string is called 'colorstring' then
> where I was doing:
> image_rgb = pyx.bitmap.image(xn,yn,"RGB",colorstring)
> I can now also use PIL to do:
> im = Image.fromstring('RGB',(xn,yn),colorstring)
> and save as a JPEG.
>
> Is this right? (I'm new to images...)
> Seems to work.
Fine. But please have another look at the description of the bitmap
class:
http://pyx.sourceforge.net/manual/module-bitmap.html
pyx.bitmap.image is a simple "container" to store the image data in
PyX *without* needing the PIL. On the other hand, if you already use
the PIL anyway, you can use a PIL image instance directly for
pyx.bitmap.bitmap. (The intention of pyx.bitmap.image was to be able
to deal with bitmap data *without* having the PIL.)
André
PS: If your whole image is a bitmap image and you want to use PyX to
just convert it to PostScript or PDF, you can also use the
imgconvert.py script in the contrib directory. Since PyX does a quite
good job in creating compressed bitmap images, the result of a
png/jpg/whatever -> PS/EPS/PDF is usually quite good.
PPS: Finally we've added a pipeGS method to canvas instances in PyX
0.9, which can be used to write png/jpg/whatever directly from within
PyX by using ghostscript. I'm really leaving the subject now, but
maybe some of our long-time users have not yet seen this new feature
of PyX 0.9, which sometimes can be useful ...
--
by _ _ _ Dr. André Wobst
/ \ \ / ) [EMAIL PROTECTED], http://www.wobsta.de/
/ _ \ \/\/ / PyX - High quality PostScript and PDF figures
(_/ \_)_/\_/ with Python & TeX: visit http://pyx.sourceforge.net/
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