From: Michael Barr <barr@math.mcgill.ca>
To: Categories list <categories@mta.ca>
Subject: ticked arrowheads in xy-pic and diagxy
Date: Wed, 25 Feb 2009 20:08:48 -0500 (EST) [thread overview]
Message-ID: <E1Lca2p-0003G3-DV@mailserv.mta.ca> (raw)
A month or two ago, Micah McCurdy wrote to ask me if it was possible to
make an arrow with a tick in the middle (that is ----+---->) and I said I
didn't know how to do that and suggested he ask Ross Moore. Ross told him
that xy-pic didn't have that capacity. Well, Micah discovered that it
did. Here are some samples, using diagxy, but that is just a front end to
xy-pic.
$$\bfig
\node a(0,0)[A]
\node b(300,400)[B]
\arrow/@{>}|-*@{>}/[a`b;f]
\efig$$
$$\bfig
\ptriangle/>`>`@{>}|-@{|}/[A`B`C;f`g`h]
\efig$$
$$\bfig
\morphism/@{>}|-@{+}/<700,0>[ABCDE`F;h]
\efig$$
$$\bfig
\morphism/@{>}|-*@{|}/<700,0>[ABCDE`F;h]
\efig$$
As far as I can tell, the * between the - and the @ has no effect. The
one limitation is that what goes inside the -@{ } must be a \dir. This is
a limitation for me, since I cannot figure out the syntax of \newdir. For
this to work, it clearly has to be something that tex can rotate.
Michael
reply other threads:[~2009-02-26 1:08 UTC|newest]
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