UNIX/IRAF Site Manager's Guide

UNIX/IRAF Site Manager's Guide

4. Graphics and Image Display

IRAF itself is device and window system independent, hence it can be used with any windowing system such as X11 or SunView, or with hardware graphics and display devices. Nowadays most people will be running IRAF on a UNIX workstation under X11. At the time that this is being written, IRAF is most commonly run under X11 using xterm for graphics and saoimage for image display. Binaries for these applications are included in the IRAF distribution if not already provided with the window system software on the host system. New graphics and image display clients, xgterm and ximtool respectively, are being developed for use with IRAF running under X11.

Most people will prefer to use xgterm and ximtool (or a similar display tool such as saoimage) for IRAF graphics and imaging. xgterm is based on xterm, providing an equivalent vt100 (text window) capability but a much enhanced graphics capability. ximtool provides a general interactive image display capbility, including support for multiple image frame buffers and frame blinking, independent zoom, pan, and color enhancement for each frame, and many other features. Both programs are implemented at the host level as general purpose window system tools, and are useful independently of IRAF. Detailed documentation on the basic operation and use of these programs is still in preparation (as of June 1995) but introductory documentation is available from the ftp archive in the same directory as the programs themselves. Our concern in this document is with the use of these programs with IRAF.