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<P ALIGN=RIGHT><FONT SIZE=1>Xy-pic User's Guide</FONT> <A HREF="18pt.html"><IMG SRC="./quest.gif" ALIGN=TOP HEIGHT=27 WIDTH=21 BORDER=0 ALT="?"></A><A NAME="basicsentries" NAME="tex2html116" HREF="node4.html"><IMG WIDTH=27 HEIGHT=27 BORDER=0 ALIGN=ABSMIDDLE ALT="previous" SRC="./previous.gif"></A><A NAME="tex2html120" HREF="node4.html"><IMG WIDTH=27 HEIGHT=27 BORDER=0 ALIGN=ABSMIDDLE ALT="previous" SRC="./previoussection.gif"></A><A NAME="tex2html122" HREF="node3.html"><IMG WIDTH=27 HEIGHT=27 BORDER=0 ALIGN=ABSMIDDLE ALT="up" SRC="./up.gif"></A><A NAME="tex2html118" HREF="node6.html"><IMG WIDTH=27 HEIGHT=27 BORDER=0 ALIGN=ABSMIDDLE ALT="next" SRC="./nextsection.gif"></A><A NAME="tex2html124" HREF="node6.html"><IMG WIDTH=27 HEIGHT=27 BORDER=0 ALIGN=ABSMIDDLE ALT="next" SRC="./next.gif"></A></P><H2><A NAME="SECTION00032000000000000000">1.2 Entries</A></H2> A diagram is created by the command
<P><CENTER><TABLE BORDER=BASIC CELLPADDING=3 COLS=1><TR><TD> <code>\xymatrix</code><code>{</code> ... <code>}</code>
</TABLE></CENTER><P>
<P>
where the "..." should be replaced by <em>entries</em> to
be <em>aligned in rows and columns</em> where
<UL>
<LI> entries in a row are separated by <code>&</code> and
<LI> entire rows are separated by <code> \\</code>.
</UL>
For example,
<P><CENTER><BR><IMG WIDTH=259 HEIGHT=103 ALIGN=BOTTOM ALT="displaymath73" SRC="img2.gif"><BR></CENTER><P>
was typeset by
<BLOCKQUOTE><PRE>\xymatrix{
A &*+[F]{\sum_{i=n}^m {i^2}} \\
& {\bullet} & D \ar[ul] }</PRE></BLOCKQUOTE>
Notice the following:
<UL>
<LI>entries are typeset as mathematics (using "text style"); entries
should not start with a macro (as illustrated by the use of
<code>{}</code> around <code>\bullet</code>.
<LI>all entries are centered,
<LI>the separation between rows and columns is usually quite large in a
diagram,
<LI>empty entries at the end of rows may be omitted,
<LI>"Xy-decorations" (here <code>\ar[ul]</code>) in entries allow drawing of
arrows and such relative to the entries without changing the overall
layout, and
<LI>"Xy-modifiers" (here <code>*+[F]</code>) first in entries allow changing the
format and shape in many ways.
<P>
</UL><P> <P ALIGN=RIGHT><FONT SIZE=1>Xy-pic User's Guide</FONT> <A HREF="18pt.html"><IMG SRC="./quest.gif" ALIGN=TOP HEIGHT=27 WIDTH=21 BORDER=0 ALT="?"></A><A NAME="tex2html116" HREF="node4.html"><IMG WIDTH=27 HEIGHT=27 BORDER=0 ALIGN=ABSMIDDLE ALT="previous" SRC="./previous.gif"></A><A NAME="tex2html120" HREF="node4.html"><IMG WIDTH=27 HEIGHT=27 BORDER=0 ALIGN=ABSMIDDLE ALT="previous" SRC="./previoussection.gif"></A><A NAME="tex2html122" HREF="node3.html"><IMG WIDTH=27 HEIGHT=27 BORDER=0 ALIGN=ABSMIDDLE ALT="up" SRC="./up.gif"></A><A NAME="tex2html118" HREF="node6.html"><IMG WIDTH=27 HEIGHT=27 BORDER=0 ALIGN=ABSMIDDLE ALT="next" SRC="./nextsection.gif"></A><A NAME="tex2html124" HREF="node6.html"><IMG WIDTH=27 HEIGHT=27 BORDER=0 ALIGN=ABSMIDDLE ALT="next" SRC="./next.gif"></A><P><ADDRESS>
<BR><HR>
<a href="COPYING/index.html">�/a> <a href="http://www.brics.dk/~krisrose/">Kristoffer H. Rose</a>
<<a href="mailto:krisrose@brics.dk">krisrose@brics.dk</a>>
January 6, 1997
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