I'm pretty new to Python and libraries. I'm actually trying to modify some
code someone else wrote. There are two ways images are saved. One is for the
user to select a "Save as GIF" menu item, or save as tiff, or others. The
other way is that the user wants a collected image from a camera saved
every, say, 10 minutes. The "save" process is different for some reason.
Here are the two code segments involved:
A. Save every 10 minutes
t = time.localtime(now_time)
s = "a%4d%02d%02d_%02d%02d%02d.tif" % ( NOTE my comments below B.
t.tm_year, t.tm_mon, t.tm_mday,
t.tm_hour, t.tm_min, t.tm_sec )
s = os.path.join("Exposures",s) <========== auto-exposures
if not os.path.exists("Exposures"):
os.mkdir("Exposures")
self.current_image.save(s) <============ save image
if self.trigger_mode:
self.Trigger()
self.CheckEvent()
contrast this with where the user specifically wants the image he sees saved
as a gif:
B. From menu option
def SaveGIF(self):
if self.current_path:
default_path = splitext(basename(self.current_path))[0] + ".gif"
path = asksaveasfilename(defaultextension=".gif",
title="Save as GIF",
initialfile=default_path,
filetypes=GIF_FILE_TYPES)
else:
path = asksaveasfilename(defaultextension=".gif",
title="Save as GIF",
filetypes=GIF_FILE_TYPES)
if not path:
return
gif = self.current_image.convert("RGB")
gif.save(path) <===========Save as gif.
The programmer told me if I change the tif in A. to gif, jpg or whatever, it
would work. Instead I get a file the of zero length when I use jpg. Can
anyone explain why this wouldn't work? I see that current_image.convert is
involved in one place and current_image.save in the first. {I erroneously
thought gif.save was some PIL method.)
Hmmm, maybe I needed to use jpeg?
As for fits formats, I see PIL shows FITS for identify only. Not sure what
that means. Read but not write?
Gary Herron wrote:
> W. Watson wrote:
>> In what library would I find gif.save(path), where path is the name
>> and path of a file, and the method would produce a file in a gif
>> format?
>>
>> Is there a fits.save(path) somewhere? fits is commonly used in
>> astronomical work.
>>
> You may want to install PIL (the Python Image Library) for this:
>
> http://www.pythonware.com/products/pil/
--
Wayne Watson (Nevada City, CA)
Web Page: <speckledwithStars.net>
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