A Space & astronomy forum. SpaceBanter.com

If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below.

Go Back   Home » SpaceBanter.com forum » Astronomy and Astrophysics » FITS
Site Map Home Authors List Search Today's Posts Mark Forums Read Web Partners

[fitsbits] WCSLIB 4.4



 
 
Thread Tools Display Modes
  #1  
Old August 10th 09, 08:54 AM posted to sci.astro.fits
Mark Calabretta
external usenet poster
 
Posts: 42
Default [fitsbits] WCSLIB 4.4


Greetings,

WCSLIB 4.4 is now available from http://www.atnf.csiro.au/~mcalabre.

The main development in this release is a doxygen-generated
programming manual which should make it easier to navigate the
WCSLIB functions and data structures. See

http://www.atnf.csiro.au/~mcalabre/W...lib/index.html

A full list of changes is appended here.

My thanks to all those who have provided feedback since v4.3
(2007/Dec).

Mark Calabretta
ATNF




WCSLIB version 4.4 (2009/08/10)
-------------------------------

* C library

- Creation of WCSLIB user manual from the header file prologues using
a special-purpose parser, doxextr, and sed scripts to generate input
for doxygen. This required minor formatting changes to all
prologues plus miscellaneous changes such as naming of arguments in
function prototypes.

- Bug fix in wcsset() that affected handling of PROJPn (deprecated)
and PVi_ma attached to the longitude (not latitude) axis. Guard
against long strings when copying the projection code. In
wcs_types(), allow for early Paper IV distortion codes (e.g.
"RA---TAN-SIP") when parsing CTYPEia.

- Use sincos() whereever possible for a ~15% speedup (patches for
cel.c, prj.c and sph.c supplied by Michael Droettboom). configure
checks for, and uses it automatically if available.

- Fixed the translation of GLS to SFL in wcsset() and celfix() when
the reference longitude and latitude are non-zero. (In the AIPS
convention, this simply translates the reference point, i.e. the map
as a whole, to those coordinates without creating an oblique grid.)

- Bug fix in prjoff(), a utility function used by the prj routines.
It forces (x,y) = (0,0) at (phi_0,theta_0) when the latter are set
by PVi_[012]a attached to the longitude (not latitude) axis. Rarely
used in practice.

- New utility function, sphdpa(), computes the distance and position
angle from a point on the sphere to a set of field points.

- In sphx2s() and sphx2s(), handle a simple change in origin of
longitude using a short-cut calculation for speed and accuracy.
Similarly in celset(), check whether phip == phi0 when computing
latp and if so use a short-cut that ensures latp == 90.0 (exactly)
if lat0 == theta0. The resulting spherical rotation then becomes a
simple change in origin of longitude. In particular, these changes
should assist PGSBOX in drawing grid lines of +/-180 longitude, to
prevent flip-flopping between one and the other.

- wcsbth() & wcspih(): resolved an inconsistency between the
documentation and code by renamimg WCSHDR_VSOURCEa as
WCSHDR_VSOURCE.

- Flex code: moved declaration of helper functions out of global
scope.

- Fixed call to wcss2p() in twcshdr.

* Fortran wrappers

- New wrapper functions:
- WCSBTH for wcsbth(),
- WCSBDX for wcsbdx(),
- CDFIX for cdfix(),
- SPHDPA for sphdpa().

- Updated WCSLEN (in wcs.inc) and added WCS_COLAX and WCS_VELANGL to
match changes to wcsprm made in v4.3 with corresponding changes to
the wrapper functions. Likewise updated TABLEN (in tab.inc) for
changes to tabprm, and added CEL_LATPREQ for celprm.

- Struct lengths are now long enough to accomodate 64-bit machines.

- Updated the flag bits for the RELAX argument in wcshdr.inc to
reflect changes to wcshdr.h made in v4.3. Renamed WCSHDR_VSOURCEa
to WCSHDR_VSOURCE for consistency with the C library.

* PGSBOX

- Improved grid labelling, particularly in minimizing the number of
fields required in sexagesimal labels.

* Utilities

- New utility program:

- wcsware extracts the WCS keywords for an image from the specified
FITS file, constructs wcsprm structs for each coordinate
representation found, and performs a variety of operations using
them.

- Old utility programs (first appeared in 4.3 but were not recorded):

- HPXcvt reorganises HEALPix data into a 2-D FITS image with HPX
coordinate system.

- wcsgrid extracts the WCS keywords for an image from the specified
FITS file and uses pgsbox() to plot a 2-D coordinate graticule for
each alternate representation found.

- fitshdr lists headers from a FITS file specified on the command
line, or else on stdin, printing them as 80-character keyrecords
without trailing blanks.

* General

- New configure options, --with-pgplotinc, --with-pgplotlib,
--with-cfitsioinc and --with-cfitsiolib allow additional directories
to be added to the library and include file search path.

- Miscellaneous fixes and improvements to the installation process.

- Generate a metadata file for pkg-config.

- Added 'make MODE=interactive check' to run the test programs in
interactive mode rather than batch.

- Merged the separate CHANGES files for C, Fortran and PGSBOX into
one (this), with a new section for utilities.


WCSLIB version 4.3.3 (2009/04/30)
---------------------------------

* C library

- fitshdr.l, wcsbth.l, and wcspih.l: use setjmp/longjmp to preempt
the call to exit() which is hard-coded in function yy_fatal_error()
supplied by flex.

- wcspih.l: if NAXIS is non-zero but there were no WCS keywords at
all in the header then create a default WCS with blank alternate
version.

* Fortran wrappers

- (No changes.)

* PGSBOX

- (No changes.)


WCSLIB version 4.3.2 (2009/03/16)
---------------------------------

* C library

- utils/GNUmakefile: create BINDIR if necessary prior to installing
utilities.

* Fortran wrappers

- (No changes.)

* PGSBOX

- (No changes.)


WCSLIB version 4.3.1 (2008/09/08)
---------------------------------

* C library

- Top-level GNUmakefile: install header files.

* Fortran wrappers

- (No changes.)

* PGSBOX

- (No changes.)




Ads
 




Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
[fitsbits] WCSLIB 4.3 Mark Calabretta FITS 0 February 28th 08 01:49 AM
[fitsbits] WCSLIB 4.2 Mark Calabretta FITS 0 September 23rd 05 06:44 AM
[fitsbits] WCSLIB 4.1 Mark Calabretta FITS 0 August 31st 05 06:14 AM
[fitsbits] WCSLIB 4.0 Mark Calabretta FITS 0 February 7th 05 12:46 AM
[fitsbits] WCSLIB 3.3 Mark Calabretta FITS 0 October 22nd 03 10:24 AM


All times are GMT +1. The time now is 04:27 PM.


Powered by vBulletin® Version 3.6.4
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
Copyright 2004-2019 SpaceBanter.com.
The comments are property of their posters.