B ÿNŽ[µã@shdZddlmZmZmZddlmZddlmZda dd„Z Gd d „d eƒZ e d d d dƒZ e  e ¡dS)z Plugin for reading FITS files. é)Úabsolute_importÚprint_functionÚdivisioné)Úformats)ÚFormatNcCs2yddlmaWntk r,tdƒ‚YnXtS)Nr)ÚfitszoThe FITS format relies on the astropy package.Please refer to http://www.astropy.org/ for further instructions.)Z astropy.iorÚ_fitsÚ ImportError©r r ú3lib/python3.7/site-packages/imageio/plugins/fits.pyÚload_libs  r c@s2eZdZdZdd„Zdd„ZGdd„dejƒZdS) Ú FitsFormataB 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. cCs |j|jkS)N)Ú extensionÚ extensions)ÚselfÚrequestr r r Ú _can_readOszFitsFormat._can_readcCsdS)NFr )rrr r r Ú _can_writeTszFitsFormat._can_writec@s6eZdZd dd„Zdd„Zdd„Zdd „Zd d „Zd S)zFitsFormat.ReaderFcKs„ts tƒtj|j ¡fd|i|—Ž}g|_xLttt|ƒƒ|ƒD]6\}}t |tj ƒs`t |tj ƒr@|j dkr@|j  |¡q@W||_dS)NÚcacher)r r ÚopenrZget_fileÚ_indexÚzipÚrangeÚlenÚ isinstanceZImageHDUZ PrimaryHDUÚsizeÚappendÚ_hdulist)rrÚkwargsZhdulistÚnZhdur r r Ú_open[s zFitsFormat.Reader._opencCs|j ¡dS)N)rÚclose)rr r r Ú_closeiszFitsFormat.Reader._closecCs t|jƒS)N)rr)rr r r Ú _get_lengthlszFitsFormat.Reader._get_lengthcCs8|dks|t|jƒkrtdƒ‚|j|j|j}|ifS)Nrz*Index out of range while reading from fits)rrÚ IndexErrorrÚdata)rÚindexZimr r r Ú _get_dataoszFitsFormat.Reader._get_datacCs tdƒ‚dS)Nz+The fits format does not support meta data.)Ú RuntimeError)rr'r r r Ú_get_meta_datawsz FitsFormat.Reader._get_meta_dataN)F)Ú__name__Ú __module__Ú __qualname__r!r#r$r(r*r r r r ÚReaderZs  r.N)r+r,r-Ú__doc__rrrr.r r r r rs1rrz-Flexible Image Transport System (FITS) formatz fits fit ftsZiIvV)r/Z __future__rrrÚrZcorerr r rÚformatZ add_formatr r r r Ús   a