path: root/noao/digiphot/apphot/Revisions

.HELP revisions Jun88 noao.digiphot.apphot
.nf


apphot/wphot/apwmag.x
    Minor typo where procedure closed with a ']'  (8/19/09, MJF)

apphot/wphot/t_wphot.x
    A call to apstats() was being passed 'cl' instead of 'ap' (8/19/09, MJF)

apphot/phot/apqradsetup.x 
apphot/phot/apradsetup.x 
apphot/wphot/apbwphot.x
    The ap_wmag() was incorrectly being used as apwmag() (8/17/09, MJF)

apphot/aputil/apvectors.x
    Modified so the calculation is done in floating point (8/15/09, MJF)

apphot/daofind/apfdcolon.x
    A call to apsets() was mistakenly using a closed 'cl' pointer instead
    of the 'ap' apphot struct pointer (8/15/09, MJF)

apphot/radprof/apfrprof.x
    The cvrject() subroutine was called w/ an extra argument (7/12/09, MJF)

apphot/aputil/apnlfuncs.x
    1.	Comments now say whether a parameter is a variance or a sigma.
    2.  Check for zero variance or sigma were improved.  The default value
    	is a sigma of 6 or a variance of 36.
    3.  CGAUSS1D was setting the wrong variable (z instead of r2) when
    	a zero variance is found.
    (3/18/09, Valdes: reported by Jason Quinn)

aplib/apwparam1.x
     The CLEAN parameter was being printed with UN_CSCALEUNIT units instead
     of UN_CSWITCH (7/8/08, MJF)

aplib/apwparam1.x
     The format string had 'yyy' instead of 'yyyy'.
      (5/27/08, Valdes)

apphot/fitpsf/apsffit.x
apphot/phot/apmag.x
apphot/phot/apremag.x
apphot/wphot/apwmag.x
apphot/wphot/apwremag.x
     Fixed some procedure calls being closed with a ']' instead of a ')'
     (2/17/08, MJF)

=======
V2.12.3
=======

apphot/aputil/apnlfuncs.x
    Catch error when the input sigma is zero.  (5/2/05, Valdes)

=======
V2.12.2
=======

apphot/aputil/aptopt.x
    Catch error when the input sigma is zero.  (2/24/03, Valdes)

apphot/center/t_center.x
apphot/fitpsf/t_fitpsf.x
apphot/fitsky/t_fitsky.x
apphot/phot/t_phot.x
apphot/phot/t_qphot.x
apphot/polyphot/t_polyphot.x
apphot/radprof/t_radprof.x
apphot/wphot/t_wphot.x
    The handling of the "default" parameter value for coordinate lists
    failed when the input list had more than one image.  The way this
    was done relied on a string not being modified but it was being
    modified in a call to apfroot.  (9/30/02, Valdes)

=======
V2.12.1
=======

apphot/center/apcenter.x
apphot/fitpsf/apfitpsf.x
apphot/fitsky/apsky.x
apphot/phot/apphot.x
apphot/polyphot/apyhot.x
apphot/radprof/apradprof.x
apphot/wphot/apwphot.x
    Fixed problems with the 'v' that can occur if the same star is measured
    with different parameters without an intervening cursor move.

    Davis, June 20, 2002

apphot/fitsky/mkpkg
    declaration. Added a missing <imhdr.h> file dependency to the apsky.x
    declaration.

    Davis, December 13, 2001

apphot/daofind/mkpkg
    Removed an unnecessary ../lib/display.h file dependency from the apbfdfind
    declaration. Added a missing ../lib/display.h file dependency to the
    apfdcolon.x declaration.

    Davis, December 13, 2001

apphot/aputil/appcache.x
    Added a call setting IM_BUFFRAC to 0 to the memory caching code in the
    apphot package tasks in order to force the imio buffer to be the size of
    the input image.

    Davis, December 10, 2001

apphot/center/apcenter.x
    Fixed a boolean / integer conversion problem in the interactive variable.
    This bug should not be present in released code.
    
    Davis, September 19, 2001

apphot/polyphot/apymkinit.x
    The call to ap_defsetup was missing the fwhmpsf argument. Since
    this is never used in the code this bug may not cause a problem.

    Davis, September 19, 2001

apphot/aplib/apwres2.x
     The pargr routine was being called with a double precision constant
     0.0d0 argument.

    Davis, September 19, 2001

apphot/fitsky/apcentroid.x
    Fixed a real/double type mismatch in a call to alimr.

    Davis, September 19, 2001

apphot/
    Modified all the apphot tasks to accept input coordinates in logical, tv,
    physical, or world coordinates and to write the output coordinates in
    logical, tv, or physical coordinates. One consequence of this is that
    the apphot tasks will now work correctly off image sections in interactive
    mode. Another is that users can work on image sections while preserving
    the coordinate system of the entire image.

    Davis, May 30, 2000

apphot/
    Modified all the apphot tasks to strip the directory information from
    the input image and coordinate file names written to the output files,
    to the terminal, and to the plot headers. The colon commands will still
    read and write full image and coordinate file path names. This change
    improves the likelyhood  that the full root image name will be written
    to the output. This root image name is used by the photometric calibration
    code to construct images sets.

    Davis, April 19, 2000

apphot/*/mkpkg
    Added some missing file dependencies and deleted some unecessary ones
    from the mkpkg files.

    Davis, September 20, 1999

apphot/polyphot/apyfit.x
apphot/polyphot/appyerrors.x
apphot/aplib/apwres2.x
    Improved the error reports for polyphot in the case where the effective
    aperture is 0, which may occur if the polygon is off the image or due
    to fractional pixel effects.

    Davis, August 10, 1999

apphot/polyphot/apyget.x
apphot/polyphot/apmkpylist.x
apphot/polyphot/ayphot.x
apphot/polyphot/apyradsetup.x
    Modified the polygon drawing code (the g keystroke command) to flush
    the graphics buffer after every polygon segement is drawn instead
    of after the polygon is complete.

    Davis, July 9, 1999

apphot/aputil/apotime.x
    Modified the code which reads the time of observation value from the image
    header to extract the time field from the date-obs keyword if it is
    present.

    Davis, May 11, 1999

apphot/aputil/apdate.x
    Modified the date and time photometry file keyword encoding tasks to
    write the date and time in the proper fits format and in units of GMT.
    Note that GMT is deactivated in digiphotx because the necessary routine
    is not yet in the system.

    Davis, May 11, 1999

apphot/aputil/apfnames.x
    Modified the default input and output file nameing routines to handle
    input images with kernel sections and cluster indices more gracefully.

    Davis, January 17, 1999

apphot/aplib/apwparam1.x
apphot/aputil/apdate.x
    Modified the apphot output file writing routines to write the "DATE"
    keyword in the new FITS standard format, eg. yyyy-mm-dd instead of
    mm-dd-yy.

    Davis, December 29, 1998

apphot/daofind/t_daofind.x
    Modified the default output file naming code to support names of the
    form "directory/default" as well as "default" in interactive mode
    as well as non-interactive mode.

    Davis, February 13, 1998

apphot/daofind/apfind.x
    Modified the centering routines to protect against a rare floating
    divide by 0 condition.

    Davis, June 24, 1997

apphot/aptest.cl
    Modified the rfits calling sequence so that the test script will
    run correctly with the new version of rfits.

    Davis, May 29, 1997

apphot/daofind/apfind.x
    Modified the routine that computes the new roundness parameter to check
    for <= 0.0 quantities in the denominator of the new roundness statistic.
    Zero valued quantities can in rare cases cause a divide by zero or
    floating operand error.

    Davis, July 21, 1996

apphot/lib/polyphotdef.h
apphot/aplib/apset1.x
apphot/aplib/apset2.x
apphot/aplib/apset.x
apphot/aplib/apstat1.x
apphot/aplib/apstat2.x
apphot/aplib/apstat.x
apphot/aplib/apwres2.x
apphot/aplib/aparrays.x
apphot/aplib/aprcursor1.x
apphot/aplib/mkpkg
apphot/phot/apmag.x
apphot/phot/apremag.x
apphot/phot/appinit.x
apphot/phot/appfree.x
apphot/phot/appplot.x
apphot/phot/apmeasure.x
apphot/phot/apcomags.x
apphot/phot/mkpkg
apphot/wphot/apwmag.x
apphot/wphot/apwremag.x
apphot/wphot/apgmeasure.x
apphot/wphot/aptmeasure.x
apphot/wphot/mkpkg
apphot/radprof/apfrprof.x
apphot/radprof/aprpindex.x
apphot/radprof/aprpplot.x
apphot/radprof/aprmmeasure.x
apphot/polyphot/apyfit.x
apphot/polyphot/mkpkg
    Modified the aperture sum routines to work in double precision where
    appropriate. This avoids rounding errors that become visible when
    working on synthetic data or data with neglible sky noise.

    Davis, July 18, 1996

apphot/doc/qphot.hlp
    Fixed some typos / omissions in the qphot help page.

    Davis, April 11, 1996

apphot/apphot.cl
apphot/apphot.men
    Replaced the txdump task with the more general pdump task and added the
    pcalc, pconvert, prenumber, pselect, and psort tasks to the apphot
    package.

    Davis, March 15, 1996

apphot/aplib/apwres1.x
apphot/daofind/apfind.x
    Fixed a serious bug in the daofind centering code which resulted
    in incorrect fractional pixel corrections being computed. This error
    can most easily be detected by plotting the histogram of the fractional
    pixel corrections for an image with a large number of detected objects.
    The histogram will be modulated with "peaks" around the .33 and .66
    fractional pixel values.

    This bug is also present in the standalone version of daophot ii. User
    should obtain a new version of daophot ii from Peter Stetson.

    Added a new roundness statistic to daofind. This statistic is sensitive
    to objects which are elongated in directions other than x and y.

    Davis, March 15, 1996

apphot/center/apcenter.x
apphot/fitpsf/apfitpsf.x
apphot/fitsky/apsky.x
apphot/phot/apphot.x
apphot/phot/apqphot.x
apphot/polyphot/apyphot.x
apphot/radprof/apradprof.x
apphot/wphot/apwphot.x
    The new m keystroke command was doing exactly the same thing as the n
    keystroke command due to a confusion of the key and colonkey variables.

    Davis, Feb 12, 1996

apphot/doc/centerpars.hlp
apphot/center/mkpkg
apphot/center/apfitcen.x
apphot/center/aprefitcen.x
apphot/center/apcplot.x
apphot/aputil/apgtools.x
    Modified the centering algorithm code to recognize 3 separate cases:
    1) cthreshold = 0.0 invokes the default thresholding technique for
    each algorithm, 2) cthreshold = +val sets the threshold to  some
    value above (below) the local data minimum (maximum), 3) cthreshold=INDEF
    or undefined turns off all thresholding. This change does not
    change the default behavior of the code.

    Changed the definition of local data minimum from the minimum pixel
    in the centering box to the minimum median value for each row in the
    centering box. This gives a value much closer to the background values
    and protects against very low valued pixels in the centering box defining
    the thresholding level.

    Davis, Sept 29, 1995

apphot/fitsky/apskybuf.x
    Changed the misleading error return code from AP_SKY_OUTOFBOUNDS to
    AP_NSKY_TOO_SMALL in the case when all the sky  are out of the good
    data range.

    Davis, June 22, 1995

apphot/daofind/apfind.x
    Added a check to avoid a divide by zero error in the code which computes
    the x and y positions of the detected objects. The divide by zero error
    can occur when the datamin value is too high for the image and there
    are not enough points to accurately compute the new x and y position.

    Davis, June 19, 1995

apphot/aplib/mkpkg
apphot/aplib/apwres1.x
apphot/aplib/apwres2.x
apphot/aplib/apwres3.x
apphot/aplib/apwres4.x
apphot/doc/phot.hlp
apphot/doc/polyphot.hlp
apphot/doc/qphot.hlp
apphot/doc/radprof.hlp
apphot/doc/wphot.hlp
    Added a FLUX column to the output of the PHOT, POLYPHOT, QPHOT, RADPROF,
    and WPHOT tasks and updated the appropriate help pages.

    Davis, Nov 14, 1994

apphot/daofind/apfdstars.x
apphot/daofind/apbfdfind.x
    Added a missing check for an INDEF value of sigma that could cause
    a floating point overflow in daofind when run from the APPHOT package
    with the default parameters.

    Davis, Oct 20, 1994

apphot/aplib/apwres2.x
    Added a check to make sure that the OTIME and IFILTER fields do not
    overflow the 23 character space allotted for them in the output file.

    Davis, Oct 12, 1994

apphot/center/t_center.x
apphot/daofind/t_daofind.x
apphot/fitpsf/t_fitpsf.x
apphot/fitsky/t_fitsky.x
apphot/phot/t_phot.x
apphot/phot/t_qphot.x
apphot/polyphot/t_polymark.x
apphot/polyphot/t_polyphot.x
apphot/radprof/t_radprof.x
apphot/wphot/t_wphot.x
    Fixed a bug in the default input and output file naming code which was
    causing the directory specifications to be stripped from the names.

    Davis, Oct 4, 1994

apphot/phot/apphot.x
apphot/phot/apqphot.x
apphot/wphot/apwphot.x
apphot/polyphot/apyphot.x
apphot/radprof/apradprof.x
apphot/phot/phot.key
apphot/phot/qphot.key
apphot/wphot/wphot.key
apphot/polyphot/polyphot.key
apphot/radprof/radprof.key
apphot/doc/phot.hlp
apphot/doc/qphot.hlp
apphot/doc/wphot.hlp
apphot/doc/polyphot.hlp
apphot/doc/radprof.hlp
    Added a new keystroke command 'a' to the phot, qphot, wphot, polyphot
    and radprof commands. The a keystroke command compute a sky value
    by averaging several sky values sampled in different regions of the
    image. Basically it is a loop over the the t keystroke command.
    The sky value in each region is computed using the current algorithm
    and geometry and the individual sky, sky sigma and sky skew values
    are averaged to produce a final sky, sigma and skew, whereas the
    number of sky pixels and number of rejected sky pixels are summed.
    The a keystroke command is intended for use with the p and o keystroke
    commands to produce an offset sky measurement capability.

    Davis, Feb 10, 1994

apphot/fitpsf/apsffit.x
apphot/fitpsf/apsfrefit.x
apphot/aplib/apwres4.x
    1. Modified the fitpsf task fitting routines so that the  parameter and
    parameter error arrays are initialized to INDEF (instead of being left
    with the values from the previous fit), in the case that the
    fitting box is entirely off the image or that that there are too few
    pixels in the fitting box to fit the model psf. 
    2. Modified the output formatting routines to print the errors in 
    the fitted rsigma (function=radgauss), xsigma and ysigma (function=
    elgauss), and rgyrat and ellip (function=moments) to three decimal
    places instead of two.

    Davis, Jan 17, 1994

apphot/center/t_center.x
apphot/fitpsf/t_fitpsf.x
apphot/fitsky/t_fitsky.x
apphot/phot/t_phot.x
apphot/polyphot/t_polyphot.x
apphot/phot/t_qphot.x
apphot/phot/t_radprof.x
apphot/wphot/t_wphot.x
    If the number of input images was greater than one, the number of output
    files exactly equal to one, and the input coordinate file for the image
    did not contain any decodable coordinates the coordinate file rather
    than the empty output file is deleted. This was ocurring because the
    output file was not being correctly stored each time through the image
    loop and empty output files are deleted by the apphot tasks.

    Davis, Dec 31, 1993

apphot/fitsky/aprefitsky.x
    The SCALE parameter in the call to ap_crossor was incorrectly
    dereferenced as AP_SCALE(sky) instead of AP_SCALE(ap).

    Davis, Sep 13, 1993

apphot/aplib/apinpars2.x
    The shiclip parameter, default = 0.0, was incorrectly being set to the
    value of the sloclip parameter at startup time.

    Davis, Sep 9, 1993

apphot/center/aprefitcen.x
    The CMAXITER parameter was incorrectly referenced in the call to 
    the ap_lgctr1d routine inside the routine aprefitcenter.
    This centering routine is not often used, and the bug is trigggered
    only if an object is recentered using different algorithm parameters
    but the same image data, something only likely to occur in interactive
    mode.

    Davis, Sep 6, 1993

apphot/center/apcencolon.x
    The arugument cmdstr in the routine apcentercolon was declared as
    "char cmdstr" instead of "char cmdstr[ARB]. This has not caused any
    errors in the code but is poor style.

    Davis, Sep 6, 1993

apphot/phot/apgqppars.x
apphot/doc/qphot.hlp
apphot/fitskypars.par
apphot/doc/fitskypars.hlp
    Changed the default sky fitting algorithm for the qphot and phot tasks from
    "mode" to "centroid" with histogram smoothing, to minimize problems
    with data taken at low light levels which have poorly sampled 
    histograms.

    Davis, Aug 14, 1993

apphot$
    The sky fitting routines were revised. Two new parameters, ploclip and
    phiclip, which define the percentage of  pixels to clip on the low
    and high sides of the sky pixel distribution were added to fitskypars. The
    fitskypars parameter skreject was split into two parameters
    sloreject and shireject which define the low and high side rejection
    parameters respectively. For the mean, median, and mode algorithms
    the first rejection cut is now made below sky - min (smax - sky, sky - smin,
    sloreject * skysigma) and above sky + min (smax - sky, sky - smin, 
    shireject * skysigma) where sky is the first estimate of the mean, median,
    and median of the sky pixels respectively, instead of below and above the
    skreject rejection limits alone. The median is computed using
    the average of 5% of the pixels around the median instead of 10 pixels.
    All the histogram dependent algorithms: histplot, centroid, gauss,
    crosscor, ofilt now use the median of the sky pixels as the center
    of the histogram, and define the extent of the
    histogram in a manner similar to that used for the first cut in
    the mean, median, and mode algorithms. The sigma parameter is
    no longer used to define the extent and binsize of the sky histogram.
    Instead the computed sky sigma is used.

    Added m and n keys to the apphot tasks. These keys operate in the same
    way as the :m and :n keys which have no arguments.

    Added the o key to the apphot tasks. This behaves in the same way
    as the p key but outputs the results to the output results file.

    Davis, Feb 24, 1993

apphot/aputil/apgflags.x
    Removed this routine which was not being used and referenced gio.h from
    the apphot library.

    Davis, Feb 11, 1993

apphot/daofind

    Added the findpars pset to the daofind task and removed the parameter
    threshold from datapars to findpars. All the detection algorithm
    parameters moved to findpars.

    Changed the name of the output convolved image to starmap. Added
    an option to output the best fit sky image skymap.

    Davis, Sept 17, 1992

apphot$
    Modified all tasks (daofind, center, fitpsf, fitsky, phot, polymark,
    polyphot, qphot, radprof, and wphot) that were designed to draw marks
    on the image display to use the imd kernel. All graphics
    drawing commands are done with portable gio calls. A temporary routine
    which uses the imd interface to fetch the display device viewport and
    window is called each time a new image is mapped. A warning message
    is issued if the image is not loaded in the display and the default
    full frame viewport is used.  All display drawing is done to the
    current frame, even if the current frame is not the frame containing
    the image. The imd kernel does not support the gflush command so
    a gframe command is used instead. This can create a messy metacode
    file but is a reasonable approximation for interactive use. 

    Davis, Sep 2, 1992

apphot$phot/apphotcolon.x
apphot$phot/apqcolon.x
apphot$radprof/aprpcolon.x
apphot$wphot/apwpcolon.x
apphot$wphot/aptmeasure.x
apphot$wphot/apgmeasure.x
apphot$aplib/apverify1.x
apphot$daofind/apfcolon.x
apphot$fitpsf/apppsf.x
apphot$fitpsf/apsfcolon.x
apphot$polyphot/apycolon.x
    Added some missing sfree statements.

    Davis, Sep 2, 1992

apphot$fitsky/aplgsky,x
    The test "if (ier != AP_OK)" was being made instead of the proper test
    "if (iter < 0)". The local variable ier was never defined or used which 
    tripped a bug in the DEC fortran compiler.
		
    Davis, August 3, 1992

apphot$datapars.par
apphot$centerpars.par
apphot$doc/datapars.hlp
apphot$doc/centerpars.hlp
apphot$lib/noisedef.h
apphot$lib/noise.h
apphot$lib/centerdef.h
apphot$lib/center.h
apphot$center/apcinit.x
apphot$center/apcencolon.x
apphot$center/apcshow.x
apphot$center/apcconfirm.x
apphot$center/apcplot.x
apphot$center/apfitcen.x
apphot$center/refitcen.x
apphot$aplib/apinit.x
apphot$aplib/apnscolon.x
apphot$aplib/apnshow.x
apphot$aplib/apinpars.x
apphot$aplib/apoutpars.x
apphot$aplib/aprcursor1.x
apphot$aplib/apverify1.x
apphot$aplib/apset2.x
apphot$aplib/apstat2.x
apphot$aplib/apwparam1.x
    Changed the units of the cthreshold parameter to sigma and moved it
    to the centerpars parameter set.

    Davis, July 7, 1992

apphot$center/t_center.x
apphot$fitpsf/t_fitpsf.x
apphot$fitsky/t_fitsky.x
apphot$phot/t_phot.x
apphot$phot/t_qphot.x
apphot$polyphot/t_polyphot.x
apphot$radprof/t_radprof.x
apphot$wphot/t_wphot.x
    1. The apphot tasks center, fitspf, fitsky, phot, qphot, polyphot,
    radprof, anbd wphot were not closing the coordinate files correctly
    in the case that coords="default" was the length of the coordinate
    list was being incorrectly set to 1.

    Davis, June 24, 1992

apphot$aplib/apapcolon.x
    1. The interactive :image <imname> command was not updating the time of
    observation correctly since the obstime keyword was not being read.

    Davis, June 23, 1992

apphot$polyphot/apyfit.x
    1. Improved the precision of the polyphot fractional pixel algorithm.

    Davis, April 1, 1992

apphot$polyphot/apyfit.x
    1. The intersection points of an image line and a polygon could
    be incorrectly translated into a list of ranges if the polygon was
    concave and contained a side collinear with the image line.

    Davis, February 25, 1991

apphot$daofind/apfdstars.x
    1. Removed an extraneous "include <fset.h> statement from daofind.

    Davis, November 20, 1991

    *** Ran spplint on the apphot code

apphot$daofind/apfshow.x
apphot$aplib/apnshow.x
apphot$aplib/apqshow.x
apphot$aplib/apwparam1.x
    1. Fixed several places in the code where the boolean function itob
    was declared an integer.

apphot$aplib/apoutpars.x
    1. Removed an extra maxch argument  from all the clppset calls.

apphot$fitpsf/apppfpars.x
apphot$phot/apqppars.x
    1. Removed an extra argument from the clpstr call.

apphot$aplib/aprcursor2.x
    1. The call to ap_rparam in ap_cpapert was being made with the integer
    argument PSFAPERT instead of the string argument KY_PSFAPERT.

apphot$fitsky/apskycolon.x
    1. The calls to ap_apcolon and ap_nscolon were being made with a type
    real junk variable instead of a type in junk variable. This was harmless.

apphot$fitsky/apspshow.x
    1. Changed a pargi call to a pargb call.

    Davis, Oct 7, 1991

apphot$test/aptest.cl
    1. Made some minor formatting changes to the aptest CL script.

    Davis, Aug 23, 1991

apphot$aplib/apfrprof.x
    1. Radprof was incorrectly normalizing the integral of the total intensity,
    by failing to multiply by the step size.

    Davis, Aug 23, 1991

apphot$aplib/apwres2.x
apphot$radprof/apprprof.x
    1. Changed the unit on output for the radial profile and fwhm from "pixels"
    to "scale".

    Davis, Aug 23, 1991

apphot$aplib/apwres1.x
    1. Changed the unit for RAPERT on output from "pixels" to "scale".

    Davis, Aug 23, 1991

apphot$
    1. Support for picking up the time of observation, for example UT,  was
    added to all the apphot routines. 

    2. Apphot will now print out INDEF for all object which have bad data
    inside the photometry apertures.

    3. Whitespace  is stripped from the filter id and the iraf version
    definition before either of these quantities is written to the photometry
    files.

    4. The output file header parameters are now 23 characters long instead
    of 15.

    5. The numerical values of the error codes have been changed for book-
    keeping purposes.

    Davis, August 1, 1991

apphot$apselect/
    1. Added the replacement task for apselect, txdump, to the package. 

    2. Added the pexamine task to the package.

    3. Removed the apselect subdirectory.

    Davis, July 29, 1991

apphot$qphot/
apphot$polymark/
apphot$nlfit/

    1. Moved all the routines in the qphot subdirectory into the phot 
    subdirectory and deleted the qphot subdirectory.

    2. Moved all the routines in the polymark subdirectory into the polyphot 
    subdirectory and deleted the polymark subdirectory.

    3. Removed the old nlfit library from the apphot package and replaced it
    with the new version which has been installed in the math package.
    The affected algorithms are the gauss centering algorithm, the gauss
    sky fitting algorithm, and the fitpsf task radial and elliptical gaussian
    function fitting algorithms.

    4. The errors computed by the gauss centering routine are smaller in the
    new version than the old version as the old code was dividing by sqrt
    (nfree) instead of sqrt (npts).

    Davis, July 28, 1991

apphot$fitpsf/apsffit.x
apphot$fitpsf/apsfrefit.x
apphot$fitpsf/apsfradgauss.x
apphot$fitpsf/apsfelgauss.x
    1. The errors computed by the fitpsf radial and elliptical gaussian
    fitting routines are smaller in the new version than the old version
    as the old code was dividing by sqrt (nfree) instead of sqrt (npts).

    2. The error output for rsigma in the fitpsf radial gaussian fitting
    routine and for xsigma/ysigma in the elliptical gaussian fitting routines
    in the old code was actually the error in rsigma ** 2 or xsigma ** 2
    and ysigma ** 2 respectively.  These errors were too small.

    Davis, July 28, 1991

apphot$center/apfitcen.x
apphot$center/aprefitcen.x
apphot$center/apgctr1d.x
apphot$center/aplgctr1d.x
apphot$aputil/aptopt.x
apphot$aputil/apqzero.x
    1. Modified all the centering routines so that the fitted centers are
    contrained to stay in the fitting box after each iteration. The gauss
    algorithm in particular could runaway when fitting objects near the
    edge of the frame or very weak objects.

    2. Fixed a bug in the optimal filter algorithm wherein the
    normalization procedure could fail if there wa no star in the
    centering box.

    Davis, May 30, 1991

apphot$center/apcconfirm.x
apphot$fitsky/apsconfirm.x
apphot$phot/appconfirm.x
apphot$wphot/apwconfirm.x
apphot$polyphot/apyconfirm.x
apphot$radprof/aprconfirm.x
apphot$fitpsf/appsfconfirm.x
    1. Modified all the apphot task verify routines to verify datamin and
    datamax.

    Davis, Mar 29, 1991

apphot$nlfit/nliter.x
apphot$nlfit/nlacpts.x
    1. Modified nlfit routines to get rid of the wtflag argument in those
    routines where it was not actually used.

    Davis, Nov 20, 1990

apphot$aputil/apwlimr.x
apphot$fitpsf/apsfradgauss.x
apphot$fitpsf/apsfelgauss.x
apphot$fitpsf/apsffit.x
apphot$fitpsf/apsfrefit.x
    1. Modified the fitpsf task so the the radial gaussian and elliptical
    gaussian fitting routines use the maximum (emission objects) or
    minimum (absorption objects) pixel position as the first guess for
    a good position instead of the center position.

    Davis, Nov 16/1990

apphot$daofind/apbfdfind.x
apphot$daofind/apconvolve.x
apphot$daofind/apfdstars.x
    1. Fixed a bug in the batch mode execution of DAOFIND wherein
    DAOFIND quit with an "cannot write pixel file error" when run on
    a previously existing convolved image.  This bug was introduced by the
    Mar 12 1990 bugfix.

    Davis, Nov 8, 1990

apphot$polyphot/t_polyphot.x
apphot$lib/polyphot.h
    1. Changed the default size of MAX_NVERTICES from 100 to 900 to satisfy
    some surface photometry people. Removed a redundant MAX_NVERTICES
    declaration in t_polyphot.x

    Davis, Aug 24, 1990

apphot$phot/apmagbuf.x
   1. Phot was refusing to fit stars whose apertures were < 1.0 pixels from
   the edge of the image because the out-of-bounds criterion was too
   conservative. I modified the code to remove this problem.

    Davis, Aug 6, 1990

apphot$daofind/apbfdfind.x
apphot$daofind/apfdstars.x
apphot$daofind/apfind.x
    1. Changed the daofind program to automatically include the relative
    error in the detection threshold.

Davis, July 17, 1990

apphot$fitsky/apskybuf.x
    1. In a few cases due to fractional pixel effects the skyfitting
    routines were not preallocating sufficient space to hold the sky
    pixels resulting in a memory corruption error.

    Davis, June 27, 1990

apphot$aplib/apfrprof.x,mkpkg
    1. Modified radprof so that it would integrate 2*PI*r*I instead of
    just I itself.

    Davis, June 18, 1990

apphot$aplib/apfdres.x
    1. Renamed the round and sharp parameters to roundness and sharp to
    remove and ambiguity in the naming convention.

    Davis, May 24, 1990

apphot$daofind/apconvolve.x
    1. Added an imflush after the last write in apconolve which cured
    a "pixel file is truncated error". This error showed up when
    daofind was run on an image that was 641 by 1025 but not on
    one that was 640 by 1024. Apparently this problem has been there
    all along but only occurs very rarely.

    Davis, Mar 29, 1980

apphot$aptest.cl
apphot$aptest.par
    1. Added the aptest task to the apphot package.

    Davis, Mar 19, 1990

apphot$aplib/
    1. Fixed two bugs in the output formating code. Long file names could
    overflow the fixed format space allotted and destroy the syntax of the
    file making it impossible for apselect to decode it. Second the COORDS
    parameter was mistakenly typed as integer instead of string.
    Davis, Mar 14, 1990

apphot$daofind/
    1. Fixed a bug which was causing daofind to fail to compute the convolved
    image when the input and output images were in hhh format. The hhh format
    was failing the test [if (IM_PIXFILE(im) == EOS)] as the pixel
    file names are set at different places in the oif and stf kernel.
    The test was dangerous and redundant, and has been removed.

    Davis, Mar 12, 1990

apphot$qphot/mkpkg
    1. Removed a duplicate entry for apqcolon.x from the mkpkg file.

    Davis, Feb 20, 1990

apphot$center/apcsnratio.x
    1. Recoded this routine slightly to avoid an optimizer bug in
    the 386i version.

    Davis, Feb 13, 1990

apphot$center/apcinit.x
apphot$fitsky/apsinit.x,apsplot.x
apphot$phot/appplot.x
    1. The sky fitting algorithm string was not being correctly set if
    salgorithm was "gauss" or "median" resulting in garbage in the output
    file header. The correct algorithm was being used.

    2. A floating point error would occur if salgorithm = "constant",
    sigma = "INDEFR" and radial profile plotting was enabled. The problem
    occurred because the plot was trying to draw the 3 * sigma of the
    sky line by adding the sky value and the sky sigma which is INDEFR.

    3. Disabled plotting the centering pixel buffer in the case where
    "calgorithm" was none and the sky pixel buffer when salgorithm is
    "none".

    Davis, Feb 7, 1990

apphot$fitpsf/apfitpsf.x
apphot$fitpsf/aprefitpsf.x
    Fixed a bug in the weighting scheme for fitpsf in which the gain was
    not scaling the image intensities correctly. I also added a check
    for 0 valued weights.

    Davis, Jan29, 1990

apphot$
    Added a setup menu mode to all the apphot tasks. When the user types
    i they enter the setup menu instead of a pre-defined set of commands.
    The default setup is still available as the v key, but each parameter
    can now be set individually as well.

    The documentation has been brought up-to-date.

    Davis, Jan 29, 1990

apphot$phot/t_phot.x

    Added calls to ap_airmass and ap_filter to the phot task as the filter
    and airmass were not updating correctly.

    Davis, Jan 16, 1990

apphot$
    Four new parameters airmass, xairmass, filter, ifilter were added to
    the datapars task  to permit users to pick up the filter and airmass
    quantities form the image headers for later transmission to calibration
    programs.

    Davis, Nov 28, 1989

apphot$radprof.par
    The default value of the verbose parameter in radprof was yes
    instead of no as it should have been.

    Davis, Nov 28, 1989

apphot$
    Added a new algorithm "mean" to the sky fitting options.

    Davis, Nov 17, 1989

apphot$
    Added an update parameter to all the apphot tasks. If verify is yes
    and the task is run in non-interactive mode update will update
    the critical parameters into the psets.

    Davis, Nov 16, 1989

apphot$radprof/t_radprof.x
    Removed a defunct define MAX_NAPERTS 15 statement from the
    radprof task. It now uses the definition in phot.h like all
    the other tasks.

    Davis, Nov 9, 1989

apphot$daofind/
    Changed daofind so that a new .coo file is output everytime daofind
    is run in interactive mode.

    Davis, Oct 30, 1989

apphot$fitsky/apmode.x
    Made some subtle mods to the mode fitting algorithm. In particular
    only the first cut is made around the median the remainder are around
    the mode.

    Davis, October 11, 1989

apphot$
    1.  apphot$center, fitsky, phot, wphot, polyphot, fitpsf and radprof tasks
    Activated the datamin and datamax parameters. Pixels outside
    this range are rejected from sky fitting algorithms and from the
    non-linear least squares fits in fitpsf and radprof. If a bad pixel
    is in the centering aperture or in a photometry aperture a magnitude
    is still computed but a warning message is issued.

    The only task where these parameters are not currently implemented
    is daofind, pending algorithm review.

    2. apphot$polyphot/apyphot.x
    Added a keystroke option to fit polygons that are not shifted to the
    current cursor position.

    3. apphot$fitsky/aprefitsky.x
    Fixed an error in the stellar position reported on the plot in the
    radplot option for sky fitting. The last cursor position was not
    being reported.

    4. apphot$fitsky/apmode.x
    Changed the cut to one around the mode. Things look ok.

    Davis, October 10, 1989

apphot$apselect/apkeywords.x
    1. Fixed a bug in the apselect task. Apselect was not picking up changes
    int the keywords (#K) values correctly. The pointer in the ky_addval
    procedure was being incorrectly computed and the new value was being
    put in the wrong place.

    Davis, Sept 15, 1989

apphot$
    1. I removed the query for fwhmpsf from phot.

    2. I fixed a serious problem in daofind when interactive = yes and
    the task was rerun on the same convolved image but using a new
    threshold. There was also a problem with the naming of the
    temporary image.

    Davis, Aug 22, 1989

apphot$aplib/aprcursor.x
apphot$aplib/apradpsf.x 

    1. The prompt for the psf fitting box parameter box has been changed from
    "centering radius" to "fitting box half width".
    The prompt for the centering box parameter cbox has been changed from
    "centering radius" to "centering box half width".

    2. The code to quickly center the radial profile before fitting has
    been added to the interactive setup routine. Somehow the fitpsf
    task was overlooked when this update was made originally.

    Davis, Aug 1, 1989

apphot$aprcursor.x
    The procedure ap_caper() inside apphot$aplib/aprcursor.x was define as
    a type real procedure but called as a subroutine. I removed the type
    real declaration.

    Davis, July 31, 1989

Version 2.8 export

*************************************************************************

apphot$
    1. The inverse of the scale was being incorrectly printed out by
    the :show command.

    2. Fwhmpsf is in scale units not pixels as listed in datapars.

    3. Exposure, ccdread and gain were not being updated correctly
    in interactive mode.

    Davis, June 20, 1989

apphot$
    1. A new parameter scale has been added to datapars and integrated into
    the apphot tasks. All the radial profile plots will now display
    units of scale and of pixels. The .hlp. .key and : commands
    have all be changed appropritately. Testing is complete.

    2. Some minor changes have been made to the quick look output formats.

    3. A verbose and verify switch have been added to all the appropriate
    tasks.

     4. Daofind has been modifed so that the convolved image is automatically
     up to date if any of the convolution kernel parameters have been
     modified.

    Davis, May 27, 1989

apphot$
    1. Add the verify switch to radprof and wphot.

    2. Began separation of the scale and fwhmpsf parameter.
       Scale was added to the apphot structure.

    Davis, May 17, 1989

apphot$
    1. Fixed an error in the definition of the skyfile format in phot.hlp
    and wphot.hlp. The are seven columns not five with the x and y position
    in columns 1 and 2.

    2. Added the verify switch to the center, fitsky, fitpsf and polyphot tasks.

    Davis, Mar 20, 1989

apphot$
    1. Modified the prompts in datapars.par, centerpars.par, fitskypars.par
    and photpars.par.

    2. Added a confirm switch to the phot task.

    Davis, Mar 15, 1989

apphot$
    1. Changed the interactive setup routine in daofind so that the radial
    profile is centered before the interactive setup menu is entered.

    2. A confirm switch has been added to the daofind task so that in batch
    mode (the default) the user can check/confirm/modify the critical
    task parameters. A similar 'v' for verify key has been added to 
    the list of interactive menu setup commands.

    Davis, Mar 14, 1989

apphot$
    1. Edited the daofind parameter file to make the prompts more illuminating.

    2. Changed all the daofind subdirectory procedure names beginning with
    ap to ap_. This continues the apphot cleanup begun in January.

    3. Fixed a bug in the interactive daofind code. If no convolution image
    was opened daofind was trying to delete a nonexistent image at 
    task termination.

    Davis, Mar 13, 1989

apphot$apselect/
    I changed all the apselect subdirectory procedure names to begin with
    ap_. This continues the cleanup begun in January. Moved the apkeysdef.h
    file into the aplib subdirectory with all the other .h files.

    1. Davis, Mar 3, 1989

apphot$
    I changed all the .keys and .skeys file extensions to .key extensions.
    This removes a problem with installations which do a strip operation.

    Davis, Feb 3, 1989

apphot$apyfit.x
    I fixed a potential problem in polyphot. If a user specified a concave
    polygon and the image line intersected the polygon exactly on a vertex
    polyphot might not be able to tell whether a line segment was inside
    or outside the polygon, causing a error in the total flux computation.
    The affected routine was ap_yclip in apyfit.x

    1. Davis, Jan 30, 1989

apphot$
    All the tasks doing interactive setup using a radial profile now
    center the profile before plotting. This facilitates marking the full
    width half maximum of the psf on the plot.

    Davis, Jan 23, 1989

apphot
    1. Davis, Jan 21, 1989
    Began cleanup of file and procedure names. All file names now begin with
    ap. All procedure names begin with ap. Eventually I will clean up
    the ap to ap_ convention. The subdirectories polyphot and polymark
    have been completely overhauled. Note caution about updates is in order.

apphot
    1. Davis, Nov 11, 1988
    Removed a call to imparse in apimroot.x and a call to iki_parse in
    apoutname.x. The calls were changed to imgimage.

apphot
    1. Davis, Nov 3, 1988
    Daofind was outputing an incorrect magnitude estimate due to an indexing
    problem. The correct stellar position was being output.

apphot
    1. Davis, Oct 27, 1988
    The :aperts coomand in qphot.keys, phot.keys and wphot.keys was changed
    to the correct :apertures command. The corresponding help pages were
    also modified.

apphot
    1. Davis, Oct 4, 1988
    The statement z = z + p[4] was out of order in the routine cdgauss1d
    in cgauss1d.x. The evaluation of the derivative with respect to sigma
    was in error. This bug would not be noticed in the apphot code as 
    sigma was being held constant whenever this routine was called.

apphot
    1. Davis, Sept 12, 1988
    The APPHOT package was installed in the apphot subdirectory of the
    digiphot package.

apphot
    1. Davis, Aug 15, 1988
    If the i key (interactive setup option) was used after the first object
    record was written to the database file then the changed parameters
    were not being updated in the database file. The : commands were
    being updated correctly. This problem has been fixed in all the
    interactive tasks.

apphot
    1. Davis, Aug 18, 1988
    Apselect will now accept a list of text files as input. 

apphot
    1. Davis, Aug 16, 1988
    The apphot tasks now save the apertures string as well as the list
    of apertures. The phot, qphot and wphot phot tasks will noe accept
    a ranges syntax of the form ap1:apn:apstep. This syntax can be
    mixed with the former syntax. In addition it is know possible to read
    the apertures from a text file.

apphot
    1. Davis, Aug 11, 1988
    Fixed a bug in the angle computation for the elliptical Gaussian fitting
    routine in fitpsf. Positive angles from 0 to 90 were correct, the
    rest were being forced to be positive.

    2. It is now possible to change the image, coordinate file and output
    file name from apphot interactive mode.

apphot
    1. Changed the maximum number of apertures from 15 to 100.
    2. Changed apwparam to allocate astring of SZ_LINE long.

    Davis, Aug 4, 1988

apphot
    1. Fixed a bug in polyget.x. The program was hanging in batch mode when
    one tried to read a polygons file created by the imtool cursor readback
    facility. I removed an incorrectly placed next statement.

    Davis, Jul 29, 1988

apphot
    1. Added id strings to all the parameter files which request
    algorithm names etc.

    Davis, Jun 1, 1988

apphot
    1. I fixed a potentially serious problem in the way daofind handles
    out of bounds regions. Daofind was accessing an out of bounds array
    which accasionally would fail with divide by zeros NaNs etc.
    The positions of stars near the edge of the image could be affected.

    Davis, Apr29, 1988

apphot$
    1. Added a new parameter threshold and changed old parameter threshold
    to cthreshold.

    2. Daofind now reads the datapars file. It can now work on both emission
    and absorption features.

    3. Cleaned up the output and integrated with rest of apphot.

    Davis, Apr22, 1988

apphot$
    1. Removed redundant MISC string definitions.

    2. Added the DATAMIN and DATAMAX parameters required by daophot. This
    required changes to the apphot structure, the get and put pars routines
    and the set and stat calls.

    Davis, Apr12, 1988

apphot$
    1. Added correct error code handling for the case where cbox <= 0.0
    or dannulus = 0.0. The correct action but incorrect error code was
    being returned.

    2. Fixed the same bug in the code for fitpsf.

    Davis, Apr4, 1988

apphot$
    1. Fixed a bug in decoding the apertures string. If a nonsensical
    apertures string was given then the apertures could be decoded into
    some strange number.

    Davis, Apr4, 1988

apphot$apselect.x
    1. I fixed a bug in the apselect task which occurred when the user
    requested all the output fields with the * command and the output
    records contained array valued fields. The select buffer
    was being allocated space equal to the number of unique keys, not
    space for the total number of elements causing memory overflow
    problems.

    Davis, Apr1, 1988

apphot$
    1. Added a needed gdeactivate command to i setup key menus when they
    terminate prematurely. Otherwise the terminal is left in graphics
    mode.

    2. A bug in the batch mode of running apphot tasks occurred if a single
    output file was specified and there were no stars in the first file.
    The header could be written several times and cause and error in apselect.

    Davis, Mar31, 1988

apphot$fitpsf/
    1. I changed the initial guess for the sigma to be the fwhmpsf instead
    of a small fraction of the fitting box as before. This affects both the
    radial Gaussian and the elliptical Gaussian.

    Davis, Mar15,1988

apphot$
    1. Floating divide by 0 errors were occurring in daofind when the threshold
    was set to zero. These were arising in two different places. The
    magnitude estimate is based on a ratio with respect to threshold
    and the sharpness computation can blow up when the peak pixel is zero.

    2. I have added a warning message to aptime.x, appadu.x and aprdnoise.x
    so that they will print an error message if the header parameter
    keyword cannot be found in the image header.

    Davis, Mar8,1988

apphot$
    The graphics and image device opens have been moved outside of the
    image loop in interactive mode.

    Davis, Feb23,1988

apphot$
    1. All the next now print out a short help page at startup time if they
    are run in interactive mode.

    2. I changed the task termination sequence.  q from inside the cursor
    loop calls up a verification sequence, return goes back into the cursor
    loop, n exits the cursor loop and asks for the next image, q quits the
    task and w quits the task and writes to the pset parameter files.

    3. I have added the bell character to the end of all warning messages.
    More specific error messages were added to tell people that they are
    at the end of a coordinate lists etc.

    Davis, Feb18,1988

apphot$
    I switched the exposure and itime parameters from the photpars and
    polypars psets to the datapars pset where they more properly belong.

    Davis, Feb9, 1988

apphot$
    If salgorithm = constant then the algorithm which computes the magnitude
    errors will try to use the value of the sigma parameter to estimate the
    random noise inside the aperture. If sigma is INDEFR it will use only the
    poisson statistics of the star.

    Davis, Feb 6, 1988

apphot$
    Moved the pfeature parameter from centerpars and placed it in datapars
    where it logically belongs.

    Corrected a radprof error in which the extracted pixel array was being
    call out of bounds even when it wasn't.

    Polyphot was centering on the cursor position even when no polygon
    had been defined.

    Davis, Feb 5, 1988

apphot$radprof/,apphot$apselect/
    Fixed a minor bug in apselect. If string parameters were exactly equal
    to their formatted lengths then a single extra character would get
    printed at the end of each selected field. This happened for example
    when the photometry parameter was out of bounds.

    In the radprof task the sky subtracted sums were being printed out
    instead of the total sums. The mangnitudes were being computed
    correctly.

    Davis, Feb 2, 1988

apphot$apselect/
    Made extensive changes to the keyword and units string maintenance
    facilities, mostly to make the package easier to maintain.

    Changed the pfeature keyword to emission which makes more sense.

    Davis, Jan 25, 1988

apphot$t_apselect.x
    Corrected a bug in the apselect program in which the package would
    crash if the fields string was set to NULL. I included a check for
    the null string in the t_apselect.x procedure.

    Davis, Jan 20, 1988

apphot$
    I made the task lintran part of the apphot package. This allows the
    user to manipulate the coordinate lists.

    Davis, Jan 20, 1988

apphot$polyphot/pyprint
    I corrected an error in the format string for the polyphot magnitude
    error which was shifting the number over 2 columns.

    Davis, Jan 9, 1988

apphot$daofind/apfind.x
    A bug in the way daofind computed the convolution kernel for very
    small kernels was discovered and corrected. The kernel is supposed to
    be defined for all pixels < 2.0 pixels from the center. For small
    kernels these elements were being left at zero. IN most cases this
    causes no problems except for the fact that the sharpness parameter
    was lower than seen from daofind and that the nomalization for the
    magnitudes is different. Workarounds are to increase nsigma from the
    default of 1.5.

    Davis, Jan 6, 1988

apphot$polyphot/polyfit.x
    The itime normalization was not working correctly in the polyphot
    task. The time was being picked up correctly but the zero-point
    correction was not being made to the magnitude.

    Davis, Dec 31, 1987

apphot$polyphot/pybphot.x
    Davis, Dec 30, 1987
    I fixed a bug in the polyphot batch mode processing routine. An
    "illegal file descriptor" error was occurring when polyphot was run
    in batch mode with a null coordinate file list and a polygons list.

apphot$
    I continued the clean up of apphot output files. Some of these
    bugs could cause problems for potential users of apselect.
    Changed the units string for CERROR, SERROR, PERROR and RERROR to
    "cerrors", "serrors", "rerrors" and "perrors" from "cerror",
    "serror", "perror" and "rerror" respectively to make things consistent
    with the other tasks.

    I changed to polyphot units string for ZMAGNITUDE and EXPOSURE to
    "zeropoint" and "keyword" respectively for consistency with the phot
    bug.

    Fixed a bug in the polyphot output file where a # was missing in front
    of the line beginning with XCENTER.

    Fixed a bug in the output of fitpsf with function = radgauss where
    the SIGMA keyword was used for two different quantities and only the
    first one was being output.

    I changed the order of the output table headers from for example
    #N#N#N #U#U#U and #F#F#F to #N#U#F #N#U#F and #N#U#F. I rechecked 
    apselect on all this.

    Davis, Dec 22, 1987

apphot$
    I added a comment about the definition of box in the fitpsf parameter
    file.

    Changed the output format of the center task slightly. The units for
    HOST are now "computer". Similarly the units string for GAIN and
    CCDREAD are now "keyword" and "keyword". These changes will affect
    all tasks in the apphot package which use the datapars parameter set.

    Changed the units string for SALGORITHM to "algorithm". I also corrected
    an error in the COORDS keyword by changing it from CCORDS to COORDS.
    I added an s to the ERROR units string, changing it from error to
    errors.

    I corrected a bug in the output file for the wphot task. The record
    names, units and formats were not being written to the output file.
    The problem was that the task name in the batch program had not
    been changed from ophot to wphot. See also that the task statement
    was incorrect.

    Davis, Dec 21, 1987

apphot$
    I changed the default mode for the binary version of the  plotfile from
    NEW_FILE to append. This avoids annoying cannot open plotfile
    information when phot is run many times. The user must be aware
    however that very long plot files can be generated. The affected
    tasks are center, fitsky, phot, wphot, and radprof.

    Davis, Dec 21, 1987

apphot$apselect/apselect.x
    I installed the new apselect in apphot. In the process I fixed the last
    memory allocation bug which only showed up in the output of the radprof
    program where the records were unusually long.

    Davis, Dec 21, 1987

apphot$radprof/apprprof.x
    I fixed some minor bugs in the output format of radprof which were
    causing apselect errors. First the records PRADIUS, INTENSITY, INTENSITY
    should read PRADIUS, INTENSITY and TINTENSITY. The total intensity
    record was never being read. I added a trailing slash at the end of the
    magnitude record to indicate that the record continued on to include
    the radial profile. If the radial profile was long > 20 records a
    segmentation violation would occur as the program was not reallocating
    extra memory correctly.

    Davis, Dec 21, 1987

apphot$radprof/aprpinit.x
    Radprof was not reading multiple appertures from the photpars parameter
    file correctly. The problem was that the napert and weight arguments
    were reversed in the call to ap_photsetup making napert always equal
    to  1.

    Davis, Dec 15, 1987

apphot$apselect/
    Array subscripts in the apselect task were not being handled correctly
    on the sun machines. The problem was in the call to the stridx routine.
    A character constant was being placed in the first argument which is
    interpreted as an integer. This wa ok on Vax machines with their reverse
    byte order but did not work on the Suns. I set up some character
    constants and taht removed the problem.

    Arrays and array elements were not always being handled correctly by the
    expression parser. In fact arrays are curently illegal in expression.
    The program will now abort with a more informative error message if
    it detects an array in an expression. Array elements are permitted
    however.

    I added  some missing mfree statements which were causing random
    segmentation violation errors from time to time.

    Finally I made some changes for the sake of efficiency. For example
    I call the routine apchoose only once instead of once for each record
    in the output file.

    Davis, Dec 15, 1987

apphot$apphot.hd
    Changed the name of the wphot help page from ophot.hlp to wphot.hlp
    and the same of the source code file from t_ophot.x to t_wphot.x.
    Ophot was the historical name of this package.

    Corrected an error in the installation guide instructions on installing
    the help database. The help apphot command was not functioning
    correctly. The problem was a missing apphot defintion infront of the
    .men, .sys etc commands.
    
    Davis, Dec 15, 1987

apphot$apimroot.x
    Fixed a bug in the output file name generating code. If output = default
    and the image name specification included an image section then apphot
    tasks would try to create an output file name of the form .extension.
    version. The left square brackett made the image name appear like a
    directory to fio. I included code to strip the image section off the
    image name before constructing the output file name. The image
    section information is however preserved in the output file.

    Davis, Dec 10, 1987

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    October 27, 1987 Alpha Test Version Released

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.endhelp