pyfits 3.0.8

pyfits is a Python library that reads FITS images and tables into numpy or numarray objects and manipulates FITS headers.

Documentation

See the Users Guide and API documentation hosted at http://packages.python.org/pyfits.


Product's homepage

Requirements:

· Python

What's New in This Release: [ read full changelog ]

Changes in Behavior:

· Prior to this release, image data sections did not work with scaled data--that is, images with non-trivial BSCALE and/or BZERO values. Previously, in order to read such images in sections, it was necessary to manually apply the BSCALE+BZERO to each section. It's worth noting that sections did support pseudo-unsigned ints (flakily). This change just extends that support for general BSCALE+BZERO values.

Bug Fixes:

· Fixed a bug that prevented updates to values in boolean table columns from being saved. This turned out to be a symptom of a deeper problem that could prevent other table updates from being saved as well. (#139)
· Fixed a corner case in which a keyword comment ending with the string "END" could, in some circumstances, cause headers (and the rest of the file after that point) to be misread. (#142)
· Fixed support for scaled image data and psuedo-unsigned ints in image data sections (hdu.section). Previously this was not supported at all. At some point support was supposedly added, but it was buggy and incomplete. Now the feature seems to work much better. (#143)
· Fixed the documentation to point out that image data sections do support non-contiguous slices (and have for a long time). The documentation was never updated to reflect this, and misinformed users that only contiguous slices were supported, leading to some confusion. (#144)
· Fixed a bug where creating an HDUList object containing multiple PRIMARY HDUs caused an infinite recursion when validating the object prior to writing to a file. (#145)
· Fixed a rare but serious case where saving an update to a file that previously had a CHECKSUM and/or DATASUM keyword, but removed the checksum in saving, could cause the file to be slightly corrupted and unreadable. (#147)
· Fixed problems with reading "non-standard" FITS files with primary headers containing SIMPLE = F. PyFITS has never made many guarantees as to how such files are handled. But it should at least be possible to read their headers, and the data if possible. Saving changes to such a file should not try to prepend an unwanted valid PRIMARY HDU. (#157)
· Fixed a bug where opening an image with disable_image_compression = True caused compression to be disabled for all subsequent pyfits.open() calls. (r1651)