[AstroPy] numarray pdf 1.5 is broken. Using numdisplay, Python, PIL, and Tkinter

Cohen-Tanugi Johann cohen@lpta.in2p3...
Tue Apr 7 10:30:58 CDT 2009


well I think that at that stage you really need to read the matplotlib 
manual : http://matplotlib.sourceforge.net/contents.html

Johann

Wayne Watson wrote:
> That did it. Thanks. I'm not sure what the icons along the bottom 
> mean, or even the axis labels (pixels?), but there may be an idea here 
> worth pursuing. How designable is this plot? For example, could I 
> create an icon to allow the user to choose a position that I can that 
> read and use for a computation? Could I overlay the image and put a 
> transparency over it? Could I specify the background as what is in the 
> image, black? Could I draw on the figure, or add text to it?
>
> Tommy Grav wrote:
>> Remove the raw_input and add 
>>
>> plt.show()
>>
>> On Apr 7, 2009, at 10:14 AM, Wayne Watson wrote:
>>
>>> Well, that got rid of the error, but I see no image. fig was 
>>> misspelled, and I corrected that. Program stopped at raw_input with 
>>> prompt. Add raw_input. I checked the fits image with ccdsoft, and it 
>>> looks fine.
>>>
>>>     from matplotlib import pyplot as plt
>>>     import pyfits
>>>
>>>     image = pyfits.getdata('mpl51.fits')
>>>
>>>     fig = plt.figure()
>>>     ax = fig.add_subplot(111)
>>>     ax.imshow(image)
>>>     fig.canvas.draw()
>>>     raw_input("Bye")
>>>
>>>
>>>
>>> Tommy Grav wrote:
>>>> try
>>>>
>>>> from matplotlib import pyplot as plt
>>>>
>>>> fig = plt.figure()
>>>>
>>>>
>>>> On Apr 7, 2009, at 9:35 AM, Wayne Watson wrote:
>>>>
>>>>> Same result.
>>>>>
>>>>>     import matplotlib as mpl
>>>>>     import pyfits
>>>>>
>>>>>     image = pyfits.getdata('mpl51.fits')
>>>>>
>>>>>     fig = mpl.figure()
>>>>>     ax = fix.add_subplot(111)
>>>>>     ax.imshow(image)
>>>>>     fig.canvas.draw()
>>>>>
>>>>> Traceback (most recent call last):
>>>>>   File 
>>>>> "C:/Sandia_Meteors/Sentinel_Development/Development_Sentuser-Utilities/sentuser/fun-pyfits.py", 
>>>>> line 6, in <module>
>>>>>     fig = mpl.figure()
>>>>> TypeError: 'module' object is not callable
>>>>>
>>>>> Cohen-Tanugi Johann wrote:
>>>>>> looks like you have a conflict of namespace.
>>>>>> Do
>>>>>> import matplotlib as mpl
>>>>>>
>>>>>> and then
>>>>>> mpl.figure()
>>>>>>
>>>>>> Johann
>>>>>>
>>>>>> Wayne Watson wrote:
>>>>>>> This balked at the fig= line
>>>>>>>
>>>>>>>     ntuser/fun-pyfits.py", line 6, in <module>
>>>>>>>         fig = figure()
>>>>>>>     TypeError: 'module' object is not callable
>>>>>>>
>>>>>>> I'm using image = pyfits.getdata('mpl51.fits'), and that's OK.
>>>>>>>
>>>>>>> Thomas Robitaille wrote:
>>>>>>>> Have you tried matplotlib? For example:
>>>>>>>>
>>>>>>>> from matplotlib import figure
>>>>>>>> import pyfits
>>>>>>>>
>>>>>>>> image = pyfits.getdata('lena.fits')
>>>>>>>>
>>>>>>>> fig = figure()
>>>>>>>> ax = fix.add_subplot(111)
>>>>>>>> ax.imshow(image)
>>>>>>>> fig.canvas.draw()
>>>>>>>>
>>>>>>>> You can use matplotlib to do interactive stuff. If you really 
>>>>>>>> want to use Tkinter to display FITS images, I can send you an 
>>>>>>>> example.
>>>>>>>>
>>>>>>>> Best,
>>>>>>>>
>>>>>>>> Thomas
>>>>>>>>
>>>>>>>> On 6 Apr 2009, at 08:32, Wayne Watson wrote:
>>>>>>>>
>>>>>>>>> Hi, it must be than that the version of the pyfits user manual 
>>>>>>>>> I found
>>>>>>>>> is out of date, since it talks about numarray.
>>>>>>>>> I just wanted to confirm that I understood the role of ds9, 
>>>>>>>>> which is as
>>>>>>>>> you essentially wrote, is a program and not a python module.
>>>>>>>>> I just found the numpy manual, Dec. 7, 2006, by Oliphant. Is 
>>>>>>>>> that the
>>>>>>>>> current one? It mentions fits once, and image about 5 times 
>>>>>>>>> (mostly as
>>>>>>>>> what seems to be a module). Here are a few lines from the manual:
>>>>>>>>>
>>>>>>>>>    • nd image –> scipy.ndimage
>>>>>>>>>    • convolve –> scipy.stsci.convolve
>>>>>>>>>    • image –> scipy.stsci.image
>>>>>>>>>    If you don’t want to install all of scipy, you can grab 
>>>>>>>>> just these
>>>>>>>>>    packages from SVN
>>>>>>>>>    using
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> imshow is not found in it. The manual is close to 350 pages. I 
>>>>>>>>> certainly
>>>>>>>>> don't want to print it if it doesn't meet my needs. To put it 
>>>>>>>>> in terms
>>>>>>>>> of Python, consider:
>>>>>>>>>
>>>>>>>>> import Image
>>>>>>>>> im = Image.open("lena.ppm")
>>>>>>>>> print im.format, im.size, im.mode
>>>>>>>>> im.show()
>>>>>>>>>
>>>>>>>>> I'm looking for a capability somewhat like that above for 
>>>>>>>>> fits, and not
>>>>>>>>> ppm. show is pretty primitive, but the the idea is that I want 
>>>>>>>>> this
>>>>>>>>> little program to display lena.fits.
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> Cohen-Tanugi Johann wrote:
>>>>>>>>>> hi Wayne, I am not sure I understand your request, but :
>>>>>>>>>> 1) numarray is obsolete, use numpy.
>>>>>>>>>> 2) ds9 is meant to display fits image, it has nothing to do with
>>>>>>>>>> internet AFAIK. You also have FV from HEASARC.
>>>>>>>>>> 3) if you need to just visualize a fits image as an array, 
>>>>>>>>>> you have
>>>>>>>>>> several possibilities in numpy : imshow, pcolor, etc.... 
>>>>>>>>>> check the
>>>>>>>>>> user(s guide.
>>>>>>>>>>
>>>>>>>>>> HTH,
>>>>>>>>>> Johann
>>>>>>>>>>
>>>>>>>>>> Wayne Watson wrote:
>>>>>>>>>>> I tried downloading the numarray from the web and Acrobat 
>>>>>>>>>>> burped. It
>>>>>>>>>>> came up with an error. Where is the official site for it?
>>>>>>>>>>>
>>>>>>>>>>> It appears to display a fits image one must either use 
>>>>>>>>>>> numdisplay or
>>>>>>>>>>> some combo of numarray and Python's PIL and a GUI like 
>>>>>>>>>>> Tkinter. I
>>>>>>>>>>> really want to use Python in such a manner if it is 
>>>>>>>>>>> possible. From
>>>>>>>>>>> what little I know about DS9, it is an internet viewer.
>>>>>>>>>>> -- 
>>>>>>>>>>> Wayne Watson (Watson Adventures, Prop., Nevada City, CA)
>>>>>>>>>>>
>>>>>>>>>>> (121.01 Deg. W, 39.26 Deg. N) GMT-8 hr std. time)****
>>>>>>>>>>>
>>>>>>>>>>> "Less than all cannot satisfy Man." -- William Blake
>>>>>>>>>>> ------------------------------------------------------------------------ 
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> _______________________________________________
>>>>>>>>>>> AstroPy mailing list
>>>>>>>>>>> AstroPy@scipy.org
>>>>>>>>>>> http://mail.scipy.org/mailman/listinfo/astropy
>>>>>>>>>>
>>>>>>>>>
>>>>>>>>> -- 
>>>>>>>>>
>>>>>>>>>           Wayne Watson (Watson Adventures, Prop., Nevada City, 
>>>>>>>>> CA)
>>>>>>>>>
>>>>>>>>>             (121.01 Deg. W, 39.26 Deg. N) GMT-8 hr std. time)****
>>>>>>>>>
>>>>>>>>>          "Less than all cannot satisfy Man." -- William Blake
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> _______________________________________________
>>>>>>>>> AstroPy mailing list
>>>>>>>>> AstroPy@scipy.org
>>>>>>>>> http://mail.scipy.org/mailman/listinfo/astropy
>>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>> -- 
>>>>>>>            Wayne Watson (Watson Adventures, Prop., Nevada City, CA)
>>>>>>>
>>>>>>>              (121.01 Deg. W, 39.26 Deg. N) GMT-8 hr std. time)****
>>>>>>>
>>>>>>>           "Less than all cannot satisfy Man." -- William Blake
>>>>>>>           
>>>>>>> ------------------------------------------------------------------------ 
>>>>>>>
>>>>>>>
>>>>>>> _______________________________________________
>>>>>>> AstroPy mailing list
>>>>>>> AstroPy@scipy.org
>>>>>>> http://mail.scipy.org/mailman/listinfo/astropy
>>>>>>>   
>>>>>>
>>>>>
>>>>> -- 
>>>>>            Wayne Watson (Watson Adventures, Prop., Nevada City, CA)
>>>>>
>>>>>              (121.01 Deg. W, 39.26 Deg. N) GMT-8 hr std. time)****
>>>>>
>>>>>           "Less than all cannot satisfy Man." -- William Blake
>>>>>           
>>>>> _______________________________________________
>>>>> AstroPy mailing list
>>>>> AstroPy@scipy.org <mailto:AstroPy@scipy.org>
>>>>> http://mail.scipy.org/mailman/listinfo/astropy
>>>>
>>>
>>> -- 
>>>            Wayne Watson (Watson Adventures, Prop., Nevada City, CA)
>>>
>>>              (121.01 Deg. W, 39.26 Deg. N) GMT-8 hr std. time)****
>>>
>>>           "Less than all cannot satisfy Man." -- William Blake
>>>           
>>
>
> -- 
>            Wayne Watson (Watson Adventures, Prop., Nevada City, CA)
>
>              (121.01 Deg. W, 39.26 Deg. N) GMT-8 hr std. time)****
>
>           "Less than all cannot satisfy Man." -- William Blake
>           
> ------------------------------------------------------------------------
>
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