Xfig

Xfig is a version of the Fig graphics editor which runs under X Windows Version 11 windowing systems. This package can be used to draw block diagrams and figures. The graph can be exported into many kinds of output formats, e.g., L^ATEX, PiCTEX, or Encapsulated PostScript. For more information, please read the man pages on Xfig.

We recommend you to export your Xfig output in Encapsulated PostScript format, then use \includegraphics (as described in Section [*].[*].[*]) to include them. If the Xfig drawing is larger than the dimensions of one page, scale the drawing to fit within the dimensions of one page or portions of the drawing will not appear in the thesis. There are some restrictions on L^ATEX picture output. For example, the length of a \line must be more than 10pt (or 1/7 in), the diameter of a circle must be less than 1/2 inch, and the diameter of a disk (\circle*) must be less than 0.2 inch. There is an ellipse in Xfig, but there is no ellipse font in the L^ATEX picture environment. If you draw an ellipse in Xfig and export it in L^ATEX format to be used in the picture environment, all you can get is an oval. There are no similar restrictions if you select Encapsulated PostScript output.

Some L^ATEX fonts are available in the Xfig package that are compatible with the computer modern roman fonts. Times-Roman fonts are seemingly the best ones to use. If you need special characters or Greek letters, try the PSfrag package. PSfrag can replace a text string in a Encapsulated PostScript file with L^ATEX text or equations. For instance, if an Encapsulated PostScript figure has an angle to be denoted by , one can use the ``'' character from L^ATEX rather than drawing a in Xfig. There are three steps to use PSfrag:

1.

Place \usepackage{psfrag} in the thesis.tex file before \begin{document}.

2.

Add \psfrag commands to specify the text to replace. For the example above, in Xfig place text ``q1'' where the should appear in the figure and add the line \psfrag{q1}{$\theta_1$} to the thesis before the \includegraphics command for the figure.

3.

Use the \includegraphics command as usual.

PSfrag was designed to be used with dvips and may not work with PC or MAC distributions of L^ATEX. PSfrag replaces exact text strings and will not work with some drawing programs that break text strings into several PostScript commands. For more information about PSfrag, see the documentation at http://www.ece.tamu.edu/ tex or the document Using Imported Graphics in L^ATEX2_e.