Xy-pic User's Guide

# Xy-pic User's Guide

** Kristoffer H. Rose <krisrose@brics.dk>**

**Version 3.3, 1996/12/19**

*This document is a hypertext version of a document obtainable in several printable formats through the Xy-pic home page. It was generated using LaTeX2HTML.*

### Abstract:

Xy-pic is a package for typesetting graphs and diagrams using
Knuth's TeX typesetting system. Xy-pic works with most of the
many formats available, *e.g.*, plain TeX, LaTeX, and AMS-TeX.
Several styles of input for various diagram types are supported; they
all share a mnemonic notation based on the *logical composition of visual components*. This guide concentrates on how to
typeset "matrix-like" diagrams, such as commutative diagrams,
in the following style:

was typeset by the Xy-pic input lines

\xymatrix{
U \ar@/_/[ddr]_y \ar@/^/[drr]^x
\ar@{.>}[dr]|-{(x,y)} \\
& X \times_Z Y \ar[d]^q \ar[r]_p
& X \ar[d]_f \\
& Y \ar[r]^g & Z }

Such diagrams have the following characteristics:
- Specified as a matrix of entries that are automatically aligned in
rows and columns.
- Any entry may be connected to any other entry using a variety of
arrow styles all rotated and stretched as required.
- Arrows may be decorated with labels that are tied to a specified
point along the arrow and extend in a particular direction; and
arrows may be paired, cross, and visit/bend around other entries "on
the way."

Several other styles of input are supported; a short survey of the
possibilities is included last at the end along with information on
how Xy-pic can be obtained.

Xy-pic User's Guide

© Kristoffer H. Rose
<krisrose@brics.dk>
January 6, 1997
/
LaTeX2`HTML`v96.1-h