S-Lang Gtk 0.5.18 released
Posted on: 02/20/2007 11:58 AM
Version 0.5.18 of SLgtk is now available at
In addition to bugfixes, 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 (both PowerPC and Intel).
- 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.
Additional background info on S-Lang and SLgtk is given below.
Michael S. Noble
The S-Lang interpreter provides a scripting environment well-suited for scientific and engineering tasks, due to the fast and powerful vectorized numerical capabilities that are native to the language.
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
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.