C library used for reading and writing FITS files. #Read FITS #Write FITS #C library #Reader #Writer #FITS
CFITSIO is built as an accessible library of C and Fortran subroutines for reading and writing data files in FITS (Flexible Image Transport System) data format.
CFITSIO provides simple high-level routines for reading and writing FITS files that insulate the programmer from the internal complexities of the FITS format.
CFITSIO also provides many advanced features for manipulating and filtering the information in FITS files.
A set of Fortran-callable wrapper routines are also included for the convenience of Fortran programmers.
CFITSIO will probably run on most other Unix platforms without modification. Cray supercomputers and IBM mainframe computers are currently not supported.
What's new in CFITSIO 3.33:
- Modified the imcomp_decompress_tile routine to ignore any numerical overflows that might occur when using Hcompress to decompress the image. If Hcompress is used in its 'lossy' mode, the uncompressed image pixel values may slightly exceed the range of an integer*2 variable. This is generally of no consequence, so we can safely ignore any overflows in this case and just clip the values to the legal range.
- The default tiling pattern when writing a tile-compressed image has been changed. The old behaviour was to compress the whole image as one single large tile. This is often not optimal when dealing with large images, so the new default behavior is to treat each row of the image as one tile. This is the same default behavior as in the standalone fpack program. The default tile size can be overridden by calling fits_set_tile_dim.
CFITSIO 3.33
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