Grafix

Grafix is a simple, portable tool for creating high-quality scientific diagrams (in the present stage: Cartesian diagrams only).

• The diagram contents are defined by SGML files. If an SGML-capable text editor is used (e.g., XEmacs), the user obtains guidance by menus. But it is also possible to work with a simple ASCII editor (e.g., vi); the SGML tags are more or less self-explaining.
• Data can be transformed by arbitrary, user-defined functions prior to plotting (e.g., adding an offset, taking the logarithm, but also more complicated operations, like converting from degree Fahrenheit to degree Kelvin).
• It is possible to plot arbitrary, user-defined functions.
  
• Data can be fitted to arbitrary, user-defined functions, and the result plotted.
• Data can be interpolated by several methods (cubic splines, parametric cubic splines, Akima polynomials)
• Texts may contain subscripts, supercripts, italic, bold, or Greek portions
• Output is PostScript (EPS) code - scalable to any size without loss of quality.
  

System requirements

Grafix requires the following:

• an ANSI C compiler (GNU gcc and HP-UX cc are known to work)
• the make command (a standard feature of UNIX and Linux)
• XEmacs (with the SGML/PSGMLmodule included)
  [optional - but this provides menu guidance]
• GhostView
  
• the mathC library
• The Grafix source
  

Examples and other information

• Diagram and corresponding SGML source showing a simple data plot, using transformation of the input data - here
• Curve fitting and function plotting - here
• Manual: Using Grafix (PDF file)

project summary page: http://sourceforge.net/projects/grafix/

contact: Ulrich K. Deiters (deiters@xenon.pc.uni-koeln.de)