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.IX Title "funds9 1"
.TH funds9 1 "January 2, 2008" "version 1.4.2" "SAORD Documentation"
.SH "NAME"
\&\fBFunDS9: Funtools and DS9 Image Display\fR
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
Describes how funtools can be integrated into the ds9 Analysis menu.
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
SAOImage/DS9 is an astronomical imaging and data visualization
application used by astronomers around the world.  \s-1DS9\s0 can display
standard astronomical \s-1FITS\s0 images and binary tables, but also has
support for displaying raw array files, shared memory files, and data
files automatically retrieved via \s-1FTP\s0 and \s-1HTTP\s0.  Standard functional
capabilities include multiple frame buffers, colormap and region
manipulation, and many data scaling algorithms. \s-1DS9\s0's advanced
features include TrueColor visuals, deep frame buffers, true
PostScript printing, and display of image mosaics. The program's
support of image tiling, \*(L"blinking\*(R", arbitrary zoom, rotation, and pan
is unparalleled in astronomy. It also has innovative support for
automatic retrieval and display of standard image data such as the
Digital Sky Survey (using servers at \s-1SAO\s0, StScI, or \s-1ESO\s0).
.PP
\&\s-1DS9\s0 can communicate with external programs such as Funtools using the
\&\s-1XPA\s0
messaging system.  In addition, programs can be integrated directly
into the \s-1DS9\s0 \s-1GUI\s0 by means of a configurable Analysis menu.  By
default, the \s-1DS9\s0 Analysis menu contains algorithms deemed essential to
the core functions of \s-1DS9\s0, e.g., display cross-cuts of data,
iso-intensity contours, and \s-1WCS\s0 grids. However, new programs can be
added to \s-1DS9\s0 by creating a set-up file which can be loaded into \s-1DS9\s0 
to reconfigure the Analysis menu.
.PP
The basic format of the analysis set-up file is:
.PP
.Vb 6
\&  #
\&  # Analysis command descriptions:
\&  #   menu label/description
\&  #   file templates for this command
\&  #   "menu" (add to menu) |"bind" (bind to key)
\&  #   analysis command line
.Ve
.PP
For example, the funcnts program can be specified in this way:
.PP
.Vb 4
\&  Funcnts (counts in source/bkgd regions; options: none)
\&  *
\&  menu
\&  funcnts $filename $regions(source,,) $regions(background,,) | $text
.Ve
.PP
As shown above, \s-1DS9\s0 supports a macro facility to provide information
as well as task support to command lines. For example, the \f(CW$regions\fR
macro is expanded by \s-1DS9\s0 to provide the current source and/or
background region to the analysis command. The \f(CW$text\fR macro is expanded
to generate a text window display. It also is possible to query for
parameters using a \f(CW$param\fR macro, plot data using a \f(CW$plot\fR macro,
etc. See the \s-1DS9\s0 documentation for further details.
.PP
A set-up file called funtools.ds9 will
load some useful Funtools applications (counts in regions, radial
profile, X\-ray light curve and energy spectrum, 1D histogram) into the \s-1DS9\s0
Analysis menu (version 2.1 and above).  The file resides in the bin
directory where Funtools programs are installed. It can be manually
loaded into \s-1DS9\s0 from the \fBLoad Analysis Commands ...\fR option of
the \fBAnalysis\fR menu.  Alternatively, you can tell \s-1DS9\s0 to load
this file automatically at start-up time by adding the pathname to the
\&\fBEdit\fR\->\fBPreferences\fR\->\fBAnalysis Menu\fR\->Analysis
File menu option.  (\s-1NB:\s0 make sure you select
\&\fBEdit\fR\->\fBPreferences\fR\->\fBSave Preferences\fR after setting
the pathname.)
.PP
The tasks in this setup file generally process the original disk-based
\&\s-1FITS\s0 file.  Funcnts-based results (radial profile, counts in regions)
are presented in \s-1WCS\s0 units, if present in the \s-1FITS\s0 header. For
situations where a disk file is not available (e.g., image data
generated and sent to \s-1DS9\s0's 'fits' \s-1XPA\s0 access point), versions of the
radial profile and counts in regions tasks also are also offered
utilizing \s-1DS9\s0's internal image data. Results are presented in pixels.
Aside from the units, the results should be identical to the file-based
results.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
See funtools(n) for a list of Funtools help pages