[yt-users] problem writing fits image

[John ZuHone]

Hi Juan,

This only works if you have installed AstroPy in the Python that yt uses. If you installed from the install script, you can use "pip install astropy".

There should probably be a more sensible error message than the one you got, I'll set about fixing it shortly. 

Best,

John

On Jul 24, 2014, at 5:03 PM, Juan Camilo Ibanez Mejia <jibanezmejia at amnh.org> wrote:

> Dear yt users,
> 
> I was trying to generate a FITS file from one of my simulations but I obtained an error I 
> do not understand and do not know how to solve. I followed the procedure in:
> http://yt-project.org/docs/dev-3.0/visualizing/writing_fits_images.html
> and in the moment I call fib = FITSImageBuffer(cvg, fields=["density"])
> I obtain the error:
> 
> ---------------------------------------------------------------------------
> AttributeError                            Traceback (most recent call last)
> <ipython-input-87-25a548a040e2> in <module>()
> ----> 1 fib = FITSImageBuffer(cvg, fields=["density"])
> 
> /home/jcibanezm/codes/yt30/yt-x86_64/src/yt-hg/yt/utilities/fits_image.pyc in __init__(self, data, fields, units, center, scale, wcs)
>     104                 mylog.info("Making a FITS image of field %s" % (key))
>     105                 if first:
> --> 106                     hdu = pyfits.PrimaryHDU(np.array(img_data[key]))
>     107                     first = False
>     108                 else:
> 
> AttributeError: 'NoneType' object has no attribute 'PrimaryHDU'
> 
> Any idea how can I solve this ?
> 
> thanks in advance
> 
> Juan
> 
> _____________________________
> Juan Camilo Ibañez Mejia
> PhD candidate in physics
> Institute für Theoretische Astrophysik
> Heidelberg University
> jibanez at zah.uni-heidelberg.de
> 
> Research Scholar
> Department of Astrophysics
> American Museum of Natural History
> +1-212-313-7435
> jibanezmejia at amnh.org
> _____________________________
> 
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