SAOimage Release History

March 20, 2001 - Release 1.29.3 (Doug Mink, SAO)
Fix minor bugs in WCS subroutines

March 8, 2001 - Release 1.29.2 (Doug Mink, SAO)
Change WCS selection separator in filenames from : to %

February 28, 2001 - Release 1.29.1 (Doug Mink, SAO)
Support multiple WCS's

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September 29, 2000 - Releae 1.28.5 (Doug Mink, SAO)
Fix bug which caused Segmentation Faults at some zoom levels with large images.
Set FITS WCS if any CD matrix terms are in header; set rest to zero.
Read fITS keyword values even if no equal sign is present

August 1, 2000 - Release 1.28.3 (Doug Mink, SAO)
Improve handling of 1-D WCS data.  Fix numerous warning-generating bugs.

June 13, 2000 - Release 1.28.2 (Doug Mink, SAO)
If imh pixel file has no directory, *always* use same as header file

June 9, 2000 - Release 1.28.1 (Doug Mink, SAO)
Read keyword values in hget.c even if no equal sign is present.

June 2, 2000 - Release 1.28.0 (Doug Mink, SAO)
Only a few minor changes due to running lint on everything

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May 10, 2000 - Release 1.27.4 (Doug Mink, SAO)
In wcstype(), default to WCS_LIN, not error (after Bill Joye)

May 1, 2000 - Release 1.27.3 (Doug Mink, SAO)
Pixel files whcih are in subdirectories of files where IRAF .imh header
files reside are now dealt with correctly.
All dates in the old FITS format (dd/mm/yy) where the year ranges from
 0 to 999 have 1900 added to them:  01/05/100 becomes 2000-05-01.

March 27, 2000 - Release 1.27.2 (Doug Mink, SAO)
Fix bug reading IRAF .imh files with pathnames longer than 67 characters.
Fix bug precessing coordinates which were at equinoxes other than J2000
or B1950. 

February 3, 2000 - Release 1.27.0 (Doug Mink, SAO)
Upgrade WCS code to Mark Calabretta's WCSLIB 2.5
Add support for modified Julian date to dateutil.c

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December 20, 1999 - Release 1.26.11 (Doug Mink, SAO)

Fix date conversion bugs which were insignificant on the scale of SAOimage

December 3, 1999 - Release 1.26.10 (Doug Mink, SAO)
Fix bug which caused strings starting with d and e followed by numbers
to be declared numeric even though they're not really numbers

November 17, 1999 - Release 2.6.9 (Doug Mink, SAO)
Fix bug which caused loss of NCP projection

November 5, 1999 - Release 1.26.8 (Doug Mink, SAO)
Added point release to match WCSTools
imhfile.c: Use title from binary part of header as OBJECT; add DATE-MOD
hput.c: Check for end of header buffer before writing (bug fix)
Lots of unused variables eliminated after using lint

August 16, 1999 - Release 1.26 (Doug Mink, SAO)
mainkey.c:  Print 6 decimal places in degree mode
wcs.c: Display dd:mm:ss dd:mm:ss when displaying longitude and latitude
       in non-degree mode.
hput.c: In dec2str() change limits from -90 - +90 to -180 - +360
imgcheck.c: Check file type with isfits() so -fits not needed
wcsinit.c: Add PIXSCALE as arcsec/pixel keyword
           Fill in CDELTs from arcsec/pixel keyword if zero or absent
mgfyctrl.c mainkey.c: Label and switch between quad cube faces 0-5 correctly
cmdimage.c:  Add -face command to display specfic quad cube face
ctrldisk.c:  Fix bug in VMS version of disk I/O subroutines

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December 2, 1998 - Release 1.25 (Doug Mink, SAO)
cmdparse.c: -reg command added to read a region file and display it
cmdparse.c: help and version commands added
csrshape.c: add square, diamond, + and x shapes for input region files
imhfile.c: New file, replacing iraf2fits.c, same as in WCSTools
mainkey.c: z command added to cycle through zoom levels
mainkey.c: f command added to print the FITS header of an image
mainkey.c: [ and ] commands added to toggle region display and label display
mainkey.c: fix zooming and add region exclusion
mainkey.c: add version and help commands
readiraf.c: Fixed to read ALL imh2 files
rgn*.c: added code to use comments in region file to label regions
wcs.c: fix bug dealing with rotated mirrored images; fixed scale printing
wcsinit.c: Read projection constants neaded for some WCSLIB projections
wcslib.h: add cel.h, lin.h, proj.h, and wcstrig.h to wcslib.h
worldpos.c: fix bug in inverse (sky to pixel) COE projection
fitsfile.c: fix bug to deal correctly with very large headers

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September 4, 1998 - Release 1.24 (Doug Mink, SAO)
cmdparse.c: -ccursor command added to start up with pointer in center of image
cmdparse.c: -fn command added to set commands for Fn keys
ctrldisk,c: unistd.h included
display.c:  Code added to support positioning pointer to image coordinates
fitsfile.c: Renamed from fitsio.c to avoid conflict with CFITSIO package
fitsfile.h: Renamed from fitsio.h to avoid conflict with CFITSIO package
imhfile.c:  Renamed from imhio.c for consistency with fitsfile.c
mainkey.c:  Home command added to recenter pointer in image
mainutil.c: stdlib.h included
wcs.c wcs.h wcsinit.c: Changes to support multiple WCS commands

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July 16, 1998 - Release 1.23.2 (Doug Mink, SAO)
wcslib.c, wcs.c: Correct implementation of CSC, and probably all, quad cube
projections.  
mainkey.c: Add 1-9 keys for image layer selection

July 13, 1998 - Release 1.23.1 (Doug Mink, SAO)
wcs.c: bug fixes
mainkey.c: fix i key to respond instantly
mainkey.c: fix +, -, and = keys for 3-D image navigation
mgfyctrl.c: Add image number to 3-D image coordinates
prntcurs.c: Add image number to 3-D image coordinates

July 7, 1998 - Release 1.23 (Doug Mink, SAO)
Bug fixes in and restructuring of WCS subroutines
wcsinit.c: New file made up of header-accessing parts of old wcs.c
wcs.c and mainkey.c:  Add support for multiple faces of quad cube images
mainkey.c: Add h key command to switch between degrees and sexigesimal RA and Dec

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May 15, 1998 - Release 1.22 (Doug Mink, SAO)
Implement equinox of image coordinates (header EPOCH = date, 2000, 1950)
wcs.c: Implement Mark Calabretta's WCSLIB projections, IRAF TNX projection,
and WCSTools polynomial projection (uses COi_nnn keywords)
Implement ecliptic coordinate tracking using e key
Add i command to track in equinox of image, as an alternative to j or b
Lots of small changes to wcs.c subroutines

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January 14, 1998 - Release 1.21 (Doug Mink, SAO)
wcs.c: bug failing to precess DSS coordinates fixed
iraf2fits.c: Capability of reading  IRAF 2.11 .imh files added
readiraf.c: Architecture-independent access to all IRAF .imh files

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October 25, 1996 - Release 1.20 (Doug Mink, SAO)
cmddisp.c: Add cursor commands in new subroutine, parse_cursor()
cmdpars.c: Add call to parse_cursor()
wcs.c: Add plate scale to wcscent() (SAOimage WCS descriptive message)

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August 13, 1996 - Release 1.19 (Doug Mink, SAO)
Fix many small bugs in WCS library; match to wcslib-1.1
wcs.c: Add more possibilities to simple WCS, including systemless
       coordinates which cannot be translated by j, b, or g keys

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February 9, 1996 - Release 1.18 (Doug Mink, SAO)
The Q key no longer exits from SAOimage when an image is being
displayed in IMTOOL mode.
Fix size problem with image pixel value in cursor tracking window
Switch display mode instead of printing for B, G, and J keys
Get rid of pipe error message if displaying an image from the
command line.
readiraf.c: Read arbitrary, rather than fixed-sized, IRAF image header
wcs.c: Add simple WCS if RA, DEC, and SECPIX (arcsec/pixel) keywords
       are in the header.  Assume north at top, east at left of image.

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December 14, 1995 - Release 1.17 (Doug Mink, SAO)
Add WCS tracking for IRAF images
readiraf.c: Add conversion to FITS header and WCS initialization
iraf2fits.c: New subroutine to convert IRAF headers to FITS headers
hput.c:  New subroutine to add parameters to FITS headers

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November 7, 1995 - Release 1.16 (Doug Mink, SAO)
platepos.c: Add 0.5 pixel offset between FITS image pixels and DSS plate
            pixels for more accurate astrometry from DSS plates. 
worldpos.c: Fix WCS bug when dealing with WFPC preview images which have
            horizontal declination and vertical right ascension. 

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October 18, 1995 - Release 1.15 (Doug Mink, SAO)
wcs.c: Add new subroutine, wcscent, to print image center and size so it is
       not automatically printed 
platepos.c: Fix RA,DEC ->image pixel subroutine so it works 
panwndw.c: Fix pan box to display images correctly 
prntcurs.c: Fix WCS check before printing WCS information 
readarr.c: Skip to correct image directly instead of fudging header length 
1. Improvements for VMS from Harry Payne at STScI 
2. Makefile for Linux from Peter Teuben at UMd 
3. Additional bug fixes from Jay Travisano at STScI 

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August 18, 1995	- Release 1.14 (Doug Mink, SAO)
wcs.c: Move wcs structure outside of file, but still allocate it with wcsinit() 
wcscon.c: New subroutine to convert between FK4, FK5, and galactic coordinates 
cmdparse.c: Add new commands to set coordinate system for cursor tracking 
mainkey.c: Add new commands to print cursor position in any coordinate system. 
mgfyctrl.c: Blank part of coordinate field if display length gets shorter 

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May 5, 1995	- Release 1.13 (Doug Mink, SAO)
platepos.c: Fix bug in DSS plate solution subroutine
readint.c:  Add Martin Bly's (Starlink) modification for 64-bit-long machines
hget.c:  Replace strstr() string search with faster homebrew version, strsrch()

1. Numerous bug fixes suggested by Corby Jacobs of STScI and Grant Privett of
   Starlink
2. Changes to make ANSI C compatible
3. Changes for port to native Solaris C

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March 8, 1995   - Release 1.12 (Doug Mink, SAO)
platepos.c: compute WCS from Digital Sky Survey plate solutions
1. Major bug in DSS plate solution subroutine found May 3, 1995

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January 20, 1995   - Release 1.11 (Doug Mink, SAO)
Add ability to handle narrow files which previously crashed SAOimage
when the pan box could not display them.

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December 22, 1994   - Release 1.10 (Doug Mink, SAO)
Add use of CD matrix as an alternate to CDELT/CRROT WCS description

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October 19, 1994   - Release 1.09 (Doug Mink, SAO)
Add World Coordinate System tracking

hget.c: extract parameter values from FITS headers
wcs.c: set of subroutines to initialize and format WCS information
worldpos.c: version of NRAO worldpos to compute WCS from pixel coordinates
prntcent.c: compute intensity-weighted center of 9x9 array around cursor
prntcurs.c: display WCS of cursor position

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May 9, 1993   - Release 1.08 (Doug Mink, SAO)
Add linear autoscale base on histogram using -lfrac, fraction
Display floating point images on byte-reversed (i.e. DEC) machines correctly

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August 26, 1994   - Release 1.07 (NOAO)
This was the last of several 1.07 releases
NOAO modifications for use as IMTOOL with IRAF

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August 14, 1991	- Release 1.06 (Mike VanHilst, SAO)
disppsct.c:	Generate EPS (Adobe v2.0), CDB

Known bugs:
1. Sizes for images being displayed with less than full resolution can
    be mis-calculated in some circumstances, resulting in an extra,
    non-image line at the bottom.
2. SAOimage is NOT X11 ICCCM compliant in the following areas:
  a. It does not use resources for defaults (i.e. background and border
    colors).
  b. No cut and paste mechanisms are supported
3. Massively zoomed tiny images may have coloring anomolies at the edges.

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June 21, 1991	- Release 1.04 (Mike VanHilst, SAO)
doc/manual.tex: Latex'd manual!
all makefiles:	Redone by NOAO for better porting
ctrlcntn.c:	Removed autoflush (bad for MIPS implementations)
mainevnt.c:	Fixed mask inconsistancy causing "bad file number" errors
hfiles/imtool.h:Some new IRAF support (alternate paths to fbconfig)
cmdimage.c cmdparse.c:
		Added + type switches where switch can toggle feature on/off.
hfiles/coord.h crdtemp.c dispbtmp.c dispdfse.c dispdthr.c disppxmp.c imgnew.c
mgfydraw.c sclctrl.c:
		Fixed numerous bugs for handling of very small images.
histlist.c:	Fix for infinite loop problem
btnlib/draw.c cmdparse.c wndwadj.c:
		#ifdef'd kludge switches buttons to ZPixmap format for
		ALLIANT server which does not display XYBitmap correctly.

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Jan 1, 1991	- Release 1.03 (Mike VanHilst, SAO)
csrcoord.c csrctrl.c csrdraw.c csrmove.c csrsave.c csrshape.c csrslct.c:
csrtext.c (new):
doc/cursor.txt doc/hardcopy.txt doc/region.txt:
editdraw.c:
mainkey.c mainslct.c:
panel/cursor.menu panel/menucsr.h:
rgnctrl.c rgnmake.c rgnread.c rgntoken.c rgnwpros.c:
		New features for labeling images - arrow and text cursors

clralloc.c:	Permits users with 4-5 plane machines to try color features
cmdimage.c:	Removed restrictions on file names starting with non-alpha
doc/manual.tex	The manual has been Latex'd! (see manual.dvi - 36 pages)
imgflip.c:	Fixed rotation of long or skinny images
imgnew.c:	Fixed load_mainbuf buffer zeroing
mainevnt.c:	Fixed non-portable #ifdefs
mgfydraw.c:	Fixed fatal magnifier bug (noticed by users of small images)
mgfyval.c:	Upgraded optimal output format algorithm
wndwconf.c wndwinit.c:	Match arg typing to new Xlib.h (ANSII C type warning)

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June 3, 1990	- Release 1.02 (Mike VanHilst, SAO)
sclctrl.c:	fixed bug which assigned wrong image type at init time
clralloc.c:	added colormap creation needed for OpenWindows and
		SiliconGraphics
wndwcre.c, editctrl.c: added ICCCM compliant focus message for window manager
cmdimage.c:	upgraded experimental real-time code

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May 1, 1990 - Release 1.0 (Mike VanHilst, SAO)
Changes from beta version:
File names have all been shortened to an 8.3 (or smaller) format to enable
movement through MSDOS file systems.  A second button appearance is available.
Many internal code changes (to aid in debugging and support socket IO, to
name a couple).