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diff --git a/pkg/images/immatch/skymap.cl b/pkg/images/immatch/skymap.cl
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+++ b/pkg/images/immatch/skymap.cl
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+# SKYMAP -- Compute the geometric transformation required to register an
+# input image to a reference image using celestial coordinate WCS information
+# in the input and reference image headers. SKYMAP is a simple script task
+# which calls the SKYXYMATCH task to compute the control points followed by
+# the GEOMAP task to compute the transformation.
+
+
+procedure skymap (input, reference, database)
+
+file	input		{prompt="The input images"}
+file	reference	{prompt="The input reference images"}
+file	database	{prompt="The output database file"}
+file	transforms	{"", prompt="The database transform names"}
+file	results		{"", prompt="The optional results summary files"}
+real	xmin		{INDEF,
+			prompt="Minimum logical x reference coordinate value"}
+real	xmax		{INDEF,
+			prompt="Maximum logical x reference coordinate value"}
+real	ymin		{INDEF,
+			prompt="Minimum logical y reference coordinate value"}
+real	ymax		{INDEF,
+			prompt="Maximum logical y reference coordinate value"}
+int	nx		{10, prompt="Number of grid points in x"}
+int	ny		{10, prompt="Number of grid points in y"}
+string	wcs		{"world", prompt="The default world coordinate system",
+			enum="physical|world"}
+string	xformat		{"%10.3f", prompt="Output logical x coordinate format"}
+string	yformat		{"%10.3f", prompt="Output logical y coordinate format"}
+string	rwxformat	{"",
+			prompt="Output reference world x coordinate format"}
+string	rwyformat	{"",
+			prompt="Output reference world y coordinate format"}
+string	wxformat	{"", prompt="Output world x coordinate format"}
+string	wyformat	{"", prompt="Output world y coordinate format"}
+string	fitgeometry	{"general",
+			prompt="Fitting geometry",
+			enum="shift|xyscale|rotate|rscale|rxyscale|general"}
+string	function	{"polynomial", prompt="Surface type",
+			enum="legendre|chebyshev|polynomial"}
+int	xxorder		{2, prompt="Order of x fit in x"}
+int	xyorder		{2, prompt="Order of x fit in y"}
+string	xxterms		{"half", enum="none|half|full",
+			  prompt="X fit cross terms type"}
+int	yxorder		{2, prompt="Order of y fit in x"}
+int	yyorder		{2, prompt="Order of y fit in y"}
+string	yxterms		{"half", enum="none|half|full",
+                         prompt="Y fit cross terms type"}
+real	reject		{INDEF, prompt="Rejection limit in sigma units"}
+string	calctype	{"real", prompt="Computation precision",
+			enum="real|double"}
+bool	verbose		{yes, prompt="Print messages about progress of task ?"}
+bool	interactive	{yes, prompt="Compute transformation interactively ? "}
+string	graphics	{"stdgraph", prompt="Default graphics device"}
+gcur	gcommands	{"", prompt="Graphics cursor"}
+
+
+begin
+	# Declare local variables.
+	int nimages
+	string tinput, treference, tcoords, toutput, ttransforms, tresults
+	string	tsections1, tsections2, tcname
+
+	# Cache the sections task.
+	cache sections
+
+	# Get the query parameters.
+	tinput = input
+	treference = reference
+	toutput = database
+	if (transforms == "") {
+	    ttransforms = tinput
+	} else {
+	    ttransforms = transforms
+	}
+	tresults = results
+
+	# Get the temproary coordinates file list.
+	tsections1 = mktemp ("tmps1")
+	tsections2 = mktemp ("tmps2")
+	if (access ("imxymatch.1")) {
+	    tcoords = mktemp ("imxymatch")
+	} else {
+	    tcoords = "imxymatch"
+	}
+	sections (tinput, option="fullname", > tsections1)
+	nimages = sections.nimages
+	for (i = 1; i <= nimages; i = i + 1) {
+	    printf ("%s\n", tcoords // "." // i, >> tsections2)
+	}
+	delete (tsections1, go_ahead+, verify-, default_action+,
+	    allversions+, subfiles+, > "dev$null")
+	tcname = "@"//tsections2
+
+	# Compute the control points.
+	skyxymatch (tinput, treference, tcname, coords="grid", xmin=xmin,
+	    xmax=xmax, ymin=ymin, ymax=ymax, nx=nx, ny=ny, wcs=wcs,
+	    xcolumn=1, ycolumn=1, xunits="", yunits="", xformat=xformat,
+	    yformat=yformat, rwxformat=rwxformat, rwyformat=rwyformat,
+	    wxformat=wxformat, wyformat=wyformat, min_sigdigits=7, verbose=no)
+
+	# Compute the transformation.
+	geomap (tcname, toutput, xmin, xmax, ymin, ymax, transforms=ttransforms,
+	    results=tresults, fitgeometry=fitgeometry, function=function,
+	    xxorder=xxorder, xyorder=xyorder, xxterms=xxterms, yxorder=yxorder,
+	    yyorder=yyorder, yxterms=yxterms, reject=reject, calctype=calctype,
+	    verbose=verbose, interactive=interactive, graphics=graphics,
+	    cursor=gcommands)
+
+	# Cleanup.
+	delete (tcname, go_ahead+, verify-, default_action+,
+	    allversions+, subfiles+, > "dev$null")
+	delete (tsections2, go_ahead+, verify-, default_action+,
+	    allversions+, subfiles+, > "dev$null")
+end