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[fitsbits] WCSLIB 4.3
Greetings, WCSLIB 4.3 is now available from http://www.atnf.csiro.au/~mcalabre. The main developments in this release a * A new general WCS header parser wcsbth() handles binary table image arrays and pixel lists as well as image array headers. * New function wcshdo() writes out a wcsprm struct as a FITS header. * Utility programs now supplied with WCSLIB: - fitshdr: List headers from a FITS file specified on the command line, or else on stdin, printing them as 80-character keyrecords without trailing blanks. (Independent of any third-party libraries.) - wcsgrid: extract the WCS keywords from the image header of a specified FITS file and use pgsbox() to plot a 2-D coordinate graticule for it. (Uses WCSLIB and cfitsio.) - HPXcvt: reorganize HEALPix data into a 2-D FITS image with HPX coordinate system. The input data may be stored in a FITS file as a primary image or image extension, or as a binary table extension. Both NESTED and RING pixel indices are supported. (Uses cfitsio, independent of WCSLIB.) * Improved autoconf installation, particularly for Fortran, MacOSX, 64-bit systems, Flex, and shared library generation. * Miscellaneous bug fixes of varying degrees of importance (see below). * Licensing reverts to LGPL 3.0 (previously GPL 2.x). Change notes for the C library are appended. Refer also to the change notes for the Fortran and PGSBOX modules in the distribution itself. Mark Calabretta ATNF WCSLIB version 4.3 (2007/12/27) ------------------------------- * A new general WCS header parser wcsbth() handles binary table image arrays and pixel lists as well as image array headers. Added "colax" to the wcsprm struct to record the column numbers for each axis in a pixel list. * New function wcsbdx() is the analog of wcsidx() for the array of wcsprm structs returned by wcsbth(). * New function wcshdo() writes out a wcsprm struct as a FITS header. * Changes to wcspih(): - Bug fix, check for a == 0 (indication of a keyword that applies to all alternates) in internal helper function wcspih_naxes() (reported by Craig Markwardt). - Added a new ctrl option to remove valid WCS keyrecords except for those with a more general role, namely {DATE,MJD}-{OBS,AVG} and OBSGEO-{X,Y,Z} (suggested by Jim Lewis). - Added a rule for VELANGLa. Also added "velangl" to the wcsprm struct. - Do checks on the i, k & m keyword parameters in VALUE. - Fixed the test for repeated blanks in the NAXIS and WCSAXES patterns. - Fixed three CCi_ma rules to allow m == 0. - Reworked the implementation notes in the prologue. * The flex scanners, fitshdr.l, wcsbth.l, wcspih.l, wcsulex.l, and wcsutrn.l, invoke yylex_destroy() before returning to avoid a 16kiB memory leak. This was reported by several people, however it may be problematic depending on the version of flex used - version 2.5.9 or later is required. If this is not available C sources pre-generated by flex 2.5.33 will be used. * In wcs.c, don't define the signbit macro if already defined (for MacOSX). * In wcs.h, documented wtbarr namespace issues in C++. * In wcsset(), always set wcsprm.cunit[i], if possible (primarily for use by wcshdo()). * In wcsfix.c, parenthesised a boolean expression that was otherwise incorrect. * Fixed an obscure floating point rounding error in celset() that appeared with -O2 optimization in gcc v3.3.5 (Linux). * prjset() now correctly propagates the status value returned by the specific projection-setting functions (reported by Bill Pence). * Bug fix in hpxx2s(), also added bounds checking. Minor efficiencies in carx2s() and merx2s(). * In the various functions that print the contents of the structs, use the "%p" printf conversion specifier to print addresses rather than casting the pointer to int and using "#x". The latter does not work on 64-bit machines where sizeof(int) != sizeof(void*). * Reorganized the various structs to get alignment on 64-bit machines. * General: in comment text, replaced use of the obsolete term "card" with "keyrecord" which consists of a "keyword" followed by a "keyvalue" and optional "keycomment". All header file prologues now reference the README file for an overview of the library. * Miscellaneous portability fixes for 64-bit, MacOSX, OSF compiler, etc. * Elimination of compiler warnings, e.g. parenthesised assignments used as truth values (a favourite gcc gripe!), etc. * General improvements to the makefile for portability, including rules for processing flex descriptions, and not relying on "." being in the PATH when running tests. * Process flex descriptions using a newer version of flex, primarily for MacOSX. However, the processed files are now only used when flex 2.5.9 or later is not available. * Added rules to the makefile for building the shared library. * Removed WCSLIB 2.x backwards-compatibility measures from lin.h, prj.h, prj.c, and sph.h. * Switched licensing to LGPL 3.0. |
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