ó ;c›]c@`sdZddlmZmZmZddlmZddlmZd a d„Z defd„ƒYZ e d d d d ƒZ eje ƒd S(s Plugin for reading FITS files. i(tabsolute_importtprint_functiontdivisioni(tformats(tFormatcC`s8yddlmaWntk r3tdƒ‚nXtS(Ni(tfitssoThe FITS format relies on the astropy package.Please refer to http://www.astropy.org/ for further instructions.(t astropy.ioRt_fitst ImportError(((s3lib/python2.7/site-packages/imageio/plugins/fits.pytload_libs   t FitsFormatcB`s9eZdZd„Zd„Zdejfd„ƒYZRS(sB Flexible Image Transport System (FITS) is an open standard defining a digital file format useful for storage, transmission and processing of scientific and other images. FITS is the most commonly used digital file format in astronomy. This format requires the ``astropy`` package. Parameters for reading ---------------------- cache : bool If the file name is a URL, `~astropy.utils.data.download_file` is used to open the file. This specifies whether or not to save the file locally in Astropy's download cache (default: `True`). uint : bool Interpret signed integer data where ``BZERO`` is the central value and ``BSCALE == 1`` as unsigned integer data. For example, ``int16`` data with ``BZERO = 32768`` and ``BSCALE = 1`` would be treated as ``uint16`` data. Note, for backward compatibility, the kwarg **uint16** may be used instead. The kwarg was renamed when support was added for integers of any size. ignore_missing_end : bool Do not issue an exception when opening a file that is missing an ``END`` card in the last header. checksum : bool or str If `True`, verifies that both ``DATASUM`` and ``CHECKSUM`` card values (when present in the HDU header) match the header and data of all HDU's in the file. Updates to a file that already has a checksum will preserve and update the existing checksums unless this argument is given a value of 'remove', in which case the CHECKSUM and DATASUM values are not checked, and are removed when saving changes to the file. disable_image_compression : bool, optional If `True`, treats compressed image HDU's like normal binary table HDU's. do_not_scale_image_data : bool If `True`, image data is not scaled using BSCALE/BZERO values when read. ignore_blank : bool If `True`, the BLANK keyword is ignored if present. scale_back : bool If `True`, when saving changes to a file that contained scaled image data, restore the data to the original type and reapply the original BSCALE/BZERO values. This could lead to loss of accuracy if scaling back to integer values after performing floating point operations on the data. cC`s|j|jkS(N(t extensiont extensions(tselftrequest((s3lib/python2.7/site-packages/imageio/plugins/fits.pyt _can_readOscC`stS(N(tFalse(R R((s3lib/python2.7/site-packages/imageio/plugins/fits.pyt _can_writeTstReadercB`s8eZed„Zd„Zd„Zd„Zd„ZRS(cK`sŋtstƒntj|jjƒd||}g|_tjtjtjf}x]t t t |ƒƒ|ƒD]@\}}t ||ƒrn|j dkrŪ|jj|ƒqŪqnqnW||_dS(Ntcachei(RR topenRtget_filet_indextImageHDUt PrimaryHDUt CompImageHDUtziptrangetlent isinstancetsizetappendt_hdulist(R Rtkwargsthdulisttallowed_hdu_typestnthdu((s3lib/python2.7/site-packages/imageio/plugins/fits.pyt_open[s ! (cC`s|jjƒdS(N(R tclose(R ((s3lib/python2.7/site-packages/imageio/plugins/fits.pyt_closejscC`s t|jƒS(N(RR(R ((s3lib/python2.7/site-packages/imageio/plugins/fits.pyt _get_lengthmscC`sQ|dks!|t|jƒkr0tdƒ‚n|j|j|j}|ifS(Nis*Index out of range while reading from fits(RRt IndexErrorR tdata(R tindextim((s3lib/python2.7/site-packages/imageio/plugins/fits.pyt _get_dataps!cC`stdƒ‚dS(Ns+The fits format does not support meta data.(t RuntimeError(R R,((s3lib/python2.7/site-packages/imageio/plugins/fits.pyt_get_meta_dataxs(t__name__t __module__RR&R(R)R.R0(((s3lib/python2.7/site-packages/imageio/plugins/fits.pyRZs     (R1R2t__doc__RRRR(((s3lib/python2.7/site-packages/imageio/plugins/fits.pyR s1  Rs-Flexible Image Transport System (FITS) formatsfits fit fts fztiIvVN(R3t __future__RRRtRtcoreRtNoneRR R tformatt add_format(((s3lib/python2.7/site-packages/imageio/plugins/fits.pyts b