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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="arrowstargets" NAME="tex2html255" HREF="node15.html"><IMG WIDTH=27 HEIGHT=27 BORDER=0 ALIGN=ABSMIDDLE ALT="previous" SRC="./previous.gif"></A><A NAME="tex2html259" HREF="node15.html"><IMG WIDTH=27 HEIGHT=27 BORDER=0 ALIGN=ABSMIDDLE ALT="previous" SRC="./previoussection.gif"></A><A NAME="tex2html261" HREF="node11.html"><IMG WIDTH=27 HEIGHT=27 BORDER=0 ALIGN=ABSMIDDLE ALT="up" SRC="./up.gif"></A><A NAME="tex2html257" HREF="node17.html"><IMG WIDTH=27 HEIGHT=27 BORDER=0 ALIGN=ABSMIDDLE ALT="next" SRC="./nextsection.gif"></A><A NAME="tex2html263" HREF="node17.html"><IMG WIDTH=27 HEIGHT=27 BORDER=0 ALIGN=ABSMIDDLE ALT="next" SRC="./next.gif"></A></P><H2><A NAME="SECTION00045000000000000000">2.5 More targets</A></H2> The target address can be given in a large number of formats
called <em>positions</em>. The full range of possibilities is
described in the reference manual [<A HREF="node34.html#RM95:Xy-picRM">8</A>, fig. 1,]; here
is a number of useful ones in addition to the <em>hop</em> format
described in section <A HREF="node6.html#basicsarrows">1.3</A>:
<UL>
<LI><IMG WIDTH=42 HEIGHT=29 ALIGN=MIDDLE ALT="tex2html_wrap_inline2622" SRC="img44.gif">??!C[], where <I>r</I>,<I>c</I> are integers, denotes the
<em>relative entry</em> found <I>r</I> rows below and
<I>c</I> columns to the right of the current entry (the current entry itself is thus <code>[0,0]</code>). This always corresponds to a
<code>[</code><em>hop</em><code>]</code>, <I>e.g.</I>, <code>[1,2]</code> is the same as <code>[drr]</code> and
<code>[-2,0]</code> is the same as <code>[uu]</code>.
<LI><IMG WIDTH=45 HEIGHT=27 ALIGN=MIDDLE ALT="tex2html_wrap_inline2630" SRC="img45.gif">, where <I>r</I>,<I>c</I> are positive integers, denotes the
<em>absolute entry</em> found in the <I>r</I>th row and <I>c</I>th column
of the diagram. The top left entry is <code>"1,1"</code>.
<LI><IMG WIDTH=31 HEIGHT=31 ALIGN=MIDDLE ALT="tex2html_wrap_inline2638" SRC="img46.gif"> , where <I>t</I>' is any target, changes the base entry
of the present arrow to <I>t</I>' and then sets the target to <I>t</I> relative
to the original base entry. For example,
<BLOCKQUOTE><PRE>\xymatrix{ A \\
B & C \ar@<1ex>[ul]
\ar@<1ex>[ul];[] }</PRE></BLOCKQUOTE>
typesets
<P><CENTER><BR><IMG WIDTH=195 HEIGHT=89 ALIGN=BOTTOM ALT="displaymath707" SRC="img47.gif"><BR></CENTER><P>
<I>i.e.</I>, the second <code>\ar[ul]</code> arrow starts at the <code>[ul]</code> entry and ends
in the current entry.
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</UL>
See section <A HREF="node26.html#entriesnaming">3.5</A> for how to use a label as a target.
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<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="tex2html255" HREF="node15.html"><IMG WIDTH=27 HEIGHT=27 BORDER=0 ALIGN=ABSMIDDLE ALT="previous" SRC="./previous.gif"></A><A NAME="tex2html259" HREF="node15.html"><IMG WIDTH=27 HEIGHT=27 BORDER=0 ALIGN=ABSMIDDLE ALT="previous" SRC="./previoussection.gif"></A><A NAME="tex2html261" HREF="node11.html"><IMG WIDTH=27 HEIGHT=27 BORDER=0 ALIGN=ABSMIDDLE ALT="up" SRC="./up.gif"></A><A NAME="tex2html257" HREF="node17.html"><IMG WIDTH=27 HEIGHT=27 BORDER=0 ALIGN=ABSMIDDLE ALT="next" SRC="./nextsection.gif"></A><A NAME="tex2html263" HREF="node17.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:[email protected]">[email protected]</a>>
January 6, 1997
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