Dear Chandra Users,
New versions of the XPA and Gtk modules for S-Lang are available at:
http://space.mit.edu/cxc/software/slang/modules/xpa/
http://space.mit.edu/cxc/software/slang/modules/slgtk/
The release:
- Updates imdisplay to: support scaling/flipping/flopping of
composite image at launch, more intelligently manage screen
real estate via window chaining, and include online help.
- Includes gPrompt, a lightweight terminal-like widget with an
embedded S-Lang prompt, scrolling output, and a simple history
mechanism. gPrompt facilitates the complementary use of a GUI
& interactive command line within a single application process,
without resorting to the complexity of multithreading.
- Provides Gtk 2.10.9 support, including binaries for i686 Linux
and Mac OS/X (PowerPC).
- Bundles TESS [The (Te)st (S)ystem for (S)Lang] version 0.3.0, to
reduce by one the dependencies for end-user regression testing.
More details on S-Lang, SLxpa, and SLgtk are available below.
Regards,
Michael S. Noble
------------------------------------------------
S-Lang is a scripting language which provides a powerful platform
for scientific analysis and rapid development, and may be used in
CIAO from ISIS, Sherpa, Chips, and slsh. By virtue of the PySL
module S-Lang and SLgtk may also be used within Python-based
interactive analysis systems offered by other missions.
SLxpa is a set of bindings which facilitate using the XPA interprocess
communication library directly from S-Lang. It may also be used to
drive DS9 directly from S-Lang, combining the strength of DS9 imaging
with the power and speed of S-Lang's array-based mathematical
capabilities.
SLgtk augments the core numerical strengths of S-Lang by making it
possible to quickly construct sophisticated graphical interfaces from
relatively simple, and highly portable, scripts. One example is the
"VWhere," a tool for visual data mining and correlation, described in
http://arxiv.org/pdf/astro-ph/0412003
Two others are the volview 3D volume visualizer described at
http://space.mit.edu/cxc/software/slang/modules/volview/
and the lightweight imdisplay rendering tool described at
http://space.mit.edu/cxc/software/slang/modules/slgtk/doc/html/slgtk-6.html
Imdisplay allows an effectively unlimited number of images to be easily
stacked into a composite image. Transparency is respected, in the sense
that if any input image contains an alpha channel then the rendered result
will, too, and be suitably blended. A wide variety of file formats are
supported on input, including raw S-Lang arrays, FITS, JPEG, PNG, GIF,
XPM, TIFF, and animations. The rendered result may also be saved to a
variety of formats, including JPEG, PNG, and FITS.
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