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-*-text-*- $Id: README,v 3.11 2010/05/06 17:46:29 krisrose Exp $
======================================================
THE Xy-pic PACKAGE FOR TYPESETTING GRAPHS AND DIAGRAMS
======================================================
Xy-pic is a package for typesetting graphs and diagrams with TeX.
It works with most formats, including LaTeX (both 2.09 and 2e),
AMS-LaTeX, AMS-TeX, and plain TeX.
It has been used to typeset complicated diagrams from many application
areas including category theory, automata theory, algebra, neural
networks, and database theory.
- o -
See below in this file for an overview of the structure and features!
See CATALOG for up to date version information!
See TRAILER for author and accessibility information!
See COPYING for the conditions for redistribution and modification!
See VERSIONS for the exact list of the versions of all source files!
See INSTALL for how to install Xy-pic on your system!
Go to <URL: http://xy-pic.sourceforge.net> for source and news!
- o -
Xy-pic is structured as a `kernel' and several orthogonal modules called
`options', each defining a custom notation for a particular kind of
graphical object or structure.
These (combinable) structures are available:
* A graph combinator mode where diagrams are specified the way they are
composed as graphs.
* A matrix-like mode where the dimensions of the drawing are computed by
aligning diagram entries in rows and columns (this is the `diagram'
mode Xy-pic version 2 users are used to).
* A polygon mode where diagrams shaped as regular polygons are entered
in a simple way.
* A mode for typesetting beautiful knots and links.
* A general object-oriented `turtle graphic' drawing language for
specifying graphs with objects and connections between them in a
manner independent of orientation.
* An experimental facility for generating movies where diagrams wiggle
and bend into place...
The following objects may be used:
+ Positions can be given in variety of formats (extendable) including
user defined coordinates (x,y) and relative to previous positions,
objects, object edges, and points on connections.
+ Objects may be circular, elliptic, or rectangular (more shapes can be
added) and adjusted in several ways.
+ Large library of objects with mnemonic names.
+ Objects that orient themself along a connection when placed relative
to it, e.g., `\dir{|-}' is like \vdash but thus oriented; new such
objects can be defined in a convenient way.
+ TeX `boxes', i.e., text and mathematical formulae.
+ Includes circle segments and optionally arbitrary elliptical,
quadratic, and cubic arcs.
+ Connections are aligned between the reference points of objects but
start and end on the edges.
+ Any object can be used to build a connection (using `diagonal
filling'); library objects provide common line types.
+ Flexible notation for drawing arrows and general paths with tail,
stem, and head built from any object(s). Special support for arrows
that cross each other, arrows that `go by' other entries, paired
arrows (including support for 2-cells), curved arrows, and arrows with
bends.
+ Library of frames and braces.
+ Special notation for rotation, scaling, colour, and line thickness.
The correct typesetting of these features requires a backend that
supports it (i.e., PostScript) but even when this is not available
Xy-pic tries to approximate what is requested such that at least the
picture size is stable (and thus page breaks).
+ Output can use PDF or PostScript for drawing (several \special
formats are supported, including pdfTeX, dvips, and Textures).
Notation for inclusion of literal PostScript is available.
* Other graphics can be imported and then `decorated' using Xy-pic.
All object forms may be used with all structures.
- o -
Finally, enjoy Xy-pic!
Sincerely,
Kristoffer H. Rose <krisrose@tug.org>
Ross Moore <ross.moore@mq.edu.au>
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