Computing links

General

• FOLDOC, the Free On-Line Dictionary of Computing.
• Mirror @ UNSW CSE: GNU, Debian, CTAN, all the good stuff.

Operating systems

GNU/Linux

• The GNU Project
  • Australian GNU FTP mirror
  • GNU Manuals Online
• The Linux Documentation Project

Computer programming languages

Fortran

• GNU Fortran 95—Free number crunching FORALL!, the official gfortran site
• gfortran, a wiki
• G95—It's free crunch time…
• ANSI X3.9-1978—American National Standard Programming Language Fortran

m4

• GNU M4, the GNU manual.
• The m4 macro package, by Robert Adams in The Linux Journal.

Octave

Octave is an high-level language well-suited to numerical computations.

R

• The R Project for Statistical Computing
• R for Octave Users
• The ROctave package

Mathematical and numerical packages

• GAMS, NIST's Guide to Available Mathematical Software
• ‘Netlib is a collection of mathematical software, papers, and databases.’

Calc

• some Calc recipes

xmds

www.xmds.org

Visualization, graphics, and data analysis systems

• Gnuplot:
  • gnuplot homepage
  • on-line manual
  • T. Kawano's —not so frequently asked questions— page
• Kpl: ‘It's purpose is the two- and three-dimensional graphical presentation of data sets and functions.’
• SciCraft: a GPL data analysis tool.
• OpenDX
• Stefan van der Walt's FFMpeg wrapping class ‘allows you to generate movies from within Octave’.
• FPDF:—generate PDF files with PHP

Drawing

Drawing languages

• MetaPost
• SVG:— Scalable Vector Graphics
• Asymptote
• g2 graphical library:— an easy to use, portable and powerful 2D graphics library released under the GLPL
• Cairo:— a 2D graphics library with support for multiple output devices [including] the X Window System

Interactive drawing systems

• Inkscape—open source Scalable Vector Graphics editor

Digital typography

• Pango:— a library for laying out and rendering of text
• FreeType:— a free, high-quality, and portable font engine
• FontForge:— an outline font editor that lets you create your own postscript, truetype, opentype, […] fonts, or edit existing ones

Animation, movies, &c.

Generating MPEG with Imagemagick

Imagemagick can convert multiple-image files (like PPM) to the much more compact MPEG format, but it requires mpeg2encode, which is available in the mpeg2vidcodec package. As an example of the compactness, the 85M vorticity.ppm von Kármán vortex street animation produced by Gerris, becomes 1.9M after

$ convert vorticity.{ppm,mpg}

swftools

swftools looks nice

Image manipulation systems

• The GIMP—the GNU Image Manipulation Program
• pfstools— for HDR processing. HDR means High Dynamic Range. Pfstools offers ‘good integration with a high-level mathematical programming language GNU Octave’.

Information processing, transmission, and mark-up

• LaTeX:
  • www.latex-project.org
  • a LaTeX Wikibook
  • Text Processing using LaTeX, at the University of Cambridge Department of Engineering
  • BibTeX:
    • Nicholas Markey's Tame the BeaST
  • tools for checking LaTeX documents:
    • lacheck
    • ChkTeX
• XML
  • I like to edit XML with GNU Emacs's nxml-mode.
• Displaying Math on the Web—Samples and Tools

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