Hi Ben,
Sorry, in my little example, I left out a few things. I do update first
after the first call. And I do call draw() after other calls. So here is
a more accurate representation of what I do:
first = True
fig = plt.figure()
for file in files:
hdu = fits.open(file)
image = hdu[0].data
hdu.close()
if first:
ax = fig,add_subplot(1,1,1)
im = ax.imshow(image)
plt.show()
first = False
else:
im.set_data(image)
plt.draw()
ans = raw_input('continue?')
if ans == 'n':
break
Jon
On Tue, Oct 14, 2014 at 10:42 AM, Benjamin Root <ben.r...@ou.edu> wrote:
> Also, you aren't updating "first" after the first call, so it is
> constantly making new axes and recalling imshow().
>
> Ben Root
>
> On Tue, Oct 14, 2014 at 10:41 AM, Benjamin Root <ben.r...@ou.edu> wrote:
>
>> What is happening is that you are not telling the image to redraw, so you
>> are only seeing it refresh for other reasons. Try adding a fig.draw() call
>> prior to the raw_input() call.
>>
>> Cheers!
>> Ben Root
>>
>> On Tue, Oct 14, 2014 at 10:03 AM, Slavin, Jonathan <
>> jsla...@cfa.harvard.edu> wrote:
>>
>>> Hi all,
>>>
>>> In my work lately I have often wanted to browse through a series of
>>> images. This means displaying the image(s), looking at it/them and then
>>> continuing. I have coded this in a few different ways, but it is generally
>>> pretty slow -- which is to say that the image display takes more than a
>>> couple seconds (~4) after I tell it to continue to the next image. I
>>> tested the loop without image display and it was a factor of ~80 times
>>> faster than it was with image display, so it's doesn't have anything to do
>>> with reading the images from disk. My latest approach is basically:
>>> first = True
>>> fig = plt.figure()
>>> for file in imagefiles:
>>> # read in image data (fits files)
>>> if first:
>>> ax = fig.add_suplot(1,1,1)
>>> im = ax.imshow(image)
>>> else:
>>> im.set_data(image)
>>> ans = raw_input('continue?')
>>> if ans == 'n':
>>> break
>>>
>>> Is there a more efficient way to do this?
>>>
>>> Regards,
>>> Jon
>>>
>>> --
>>> ________________________________________________________
>>> Jonathan D. Slavin Harvard-Smithsonian CfA
>>> jsla...@cfa.harvard.edu 60 Garden Street, MS 83
>>> phone: (617) 496-7981 Cambridge, MA 02138-1516
>>> fax: (617) 496-7577 USA
>>> ________________________________________________________
>>>
>>>
>>>
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>
--
________________________________________________________
Jonathan D. Slavin Harvard-Smithsonian CfA
jsla...@cfa.harvard.edu 60 Garden Street, MS 83
phone: (617) 496-7981 Cambridge, MA 02138-1516
fax: (617) 496-7577 USA
________________________________________________________
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Monitor 10 servers for $9/Month.
Get alerted through email, SMS, voice calls or mobile push notifications.
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