.help revisions Dec00 xdimsum

xdimsum$src/xdshifts.cl
    Added a hidden parameter to control the number of frames to use with
    IMEXAM.  The default value works with both DS9 and XIMTOOL.  A larger
    number could then be used with XIMTOOL.  (1/2/24, Valdes)

==============
August 6, 2002
==============

xdimsum$src/xnregistar.cl
    IMCOMBINE normalizes the input scales to the first image rather than
    using them in an absolute sense.  A correction needed to be applied
    to produce output images per unit exposure time and exposure masks in unit
    exposure times.  (8/6/02, Valdes) 

xdimsum$src/xnregistar.cl
xdimsum$src/xnregistar.hlp
xdimsum$src/xfirstpass.cl
xdimsum$src/xmaskpass.cl
xdimsum$src/xmaskpass.hlp
xdimsum$src/xmosaic.cl
xdimsum$src/xmosaic.hlp
    Added the omasks and nprev_omask to the xregistar task and add support
    for previous object masking. Made the necessary modficiations
    to xfirstpass, xmaskpass, and xmosaic and their help pages. 
    (Davis, 26/01/01)

xdimsum$src/maskdereg.cl
xdimsum$src/maskpass.cl
xdimsum$src/maskdereg.hlp
    Removed the nprev_omask parameter from the maskdereg task and the
    maskdereg calls in xmaskpass. (Davis, 25/01/01)

xdimsum$src/xmaskpass.cl
xdimsum$src/xmosaic.cl
    Added the mask region growing parameter ngrow to the xmaskpass and xmosaic
    scripts.  Rearranged the xmosaic parameters. (Davis 25/01/01)

xdimsum$src/xmshifts.cl
    Fixed an error in the code which computes the average shifts, that
    was introduced when xdimsum was recently modified. (Davis 24/01/01)

xdimsum$src/xmosaic.cl
    Added switch checks to the xfirstpass and xmaskpass calls so that the
    routines are not called if no switchs are set.  (Davis 23/01/01)

xdimsum$src/xmaskpass.cl
    Added checks for the existence of the input combined  image, input
    exposure map, and input sections file. (Davis 23/01/01)

xdimsum$src/xfirstpass.cl
xdimsum$src/xmaskpass.cl
xdimsum$src/xmosaic.cl
xdimsum$doc/xfirstpass.hlp
xdimsum$doc/xmaskpass.hlp
xdimsum$doc/xmosaic.hlp
    Added the parameter nrepeats to the xfirstpass, xmaskpass, and xmosaic
    script tasks. If the same pixel is bad in nrepeats or more images then
    it is set to bad in the bad pixel mask. (Davis 01/17/01)

xdimsum$src/makemask.cl
xdimsum$src/xzap.cl
xdimsum$src/makemask.hlp
    Added the parameter negthresh to the makemask task. If negthresh is
    yes both positive and negative masking threshold are used otherwise
    only positive masking threshold are used. Negthresh was set to no in
    the xzap makemask call. (Davis 01/17/01)

xdimsum$src/xfirstpass.cl
xdimsum$src/xmaskpass.cl
xdimsum$src/xmosaic.cl
xdimsum$src/xfirstpass.hlp
xdimsum$src/xmaskpass.hlp
xdimsum$src/xmosaic.hlp
    Added the parameter negthresh to the xfirstpass, xmaskpass, and xmosaic
    tasks. (Davis 01/17/01)

.endhelp
