[Xy-pic] xy-pic Digest, Vol 112, Issue 1

Mon Jun 6 03:15:20 CEST 2016

You might get some ideas by looking at the diagxy package, invoked in xy by the [barr] option (sorry, it was not my choice of names):

\documentclass{article}
\usepackage[barr]{xy}

\begin{document}

 $$\bfig
 \node 1a(0,800)[R]
 \node 1b(1000,800)[S=\prod I(R)]
 \node 2a(400,400)[R/P]
 \node 2b(1000,400)[I(R/P)]
 \node 3a(0,0)[D]
 \node 3b(1000,0)[I(D)]
 \arrow [1a`1b;f]
 \arrow [1a`2a;]
 \arrow [1a`3a;g]
 \arrow [2a`2b;]
 \arrow |r|[1b`2b;\pi_P]
 \arrow [2a`3a;]
 \arrow [2b`3b;]
 \arrow |b|[3a`3b;=]
 \efig$$

\end{document}

A document/tutorial is loaded by:
texdoc diagxy.

Michael Barr

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To: "<Unknown>" <xy-pic at tug.org>
Sent: Sunday, June 5, 2016 6:51:09 PM
Subject: xy-pic Digest, Vol 112, Issue 1

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Today's Topics:

   1. Arrow head direction using xy-pic (Ryan Sherrill)
   2. Re: Arrow head direction using xy-pic (Ross Moore)

----------------------------------------------------------------------

Message: 1
Date: Sun, 5 Jun 2016 17:35:07 -0500
From: Ryan Sherrill <ryanesherrill at gmail.com>
To: xy-pic at tug.org
Subject: [Xy-pic] Arrow head direction using xy-pic
Message-ID:
	<CAAN+52JvWc6Gdyn4_5ABNfvXs78=-9W6+oj_R=4Fq9qG58GPzg at mail.gmail.com>
Content-Type: text/plain; charset="utf-8"

Good afternoon all,

I joined the mailing list hoping for some suggestions with a problem I'm
having.  I've previously used xymatrix, but for a paper I'm working on I
need the ability to put lines with arrows at arbitrary locations in x-y
space.  In the following MWE I specified two points and then drew a line
between them. From the xy-pic reference manual I used `?>*' to combine two
commands and then tried to add an arrow head to the end of my line.

\documentclass{article}\usepackage[all]{xy}
\begin{document}
\xy(0,0)="A",(15,15)="B",
"A";"B"**@{.}?>*{>},\endxy
\end{document}

>From the MWE the arrow head appears but it is not in the same direction as
the line.  I would appreciate any assistance the group could offer.

Thank you,
Ryan Sherrill
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Message: 2
Date: Sun, 5 Jun 2016 22:50:57 +0000
From: Ross Moore <ross.moore at mq.edu.au>
To: Ryan Sherrill <ryanesherrill at gmail.com>
Cc: "xy-pic at tug.org" <xy-pic at tug.org>
Subject: Re: [Xy-pic] Arrow head direction using xy-pic
Message-ID: <DF3CA551-A08E-4ABA-8AF2-5C59EC242AFD at mq.edu.au>
Content-Type: text/plain; charset="utf-8"

On Jun 6, 2016, at 8:35 AM, Ryan Sherrill <ryanesherrill at gmail.com<mailto:ryanesherrill at gmail.com>> wrote:

Good afternoon all,

I joined the mailing list hoping for some suggestions with a problem I'm having.  I've previously used xymatrix, but for a paper I'm working on I need the ability to put lines with arrows at arbitrary locations in x-y space.  In the following MWE I specified two points and then drew a line between them. From the xy-pic reference manual I used `?>*' to combine two commands and then tried to add an arrow head to the end of my line.

\documentclass{article}
\usepackage[all]{xy}

\begin{document}

\xy
(0,0)="A",
(15,15)="B",
"A";"B"**@{.}?>*{>},

That just drops the ?>? character, not an arrowhead.

Instead try

"A";"B"**@{.}?>*@{>},

or simply   "A";"B"**@{.>}

Try also the effect of:    "A";"B"**@{>.>} or   "A";"B"**@{(.>}

\endxy

\end{document}

>From the MWE the arrow head appears but it is not in the same direction as the line.  I would appreciate any assistance the group could offer.

Thank you,
Ryan Sherrill
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Hope this helps,
Ross

Dr Ross Moore

Mathematics Dept | Level 2, S2.638 AHH
Macquarie University, NSW 2109, Australia

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M:+61 407 288 255<tel:%2B61%20409%20125%20670>  |  E: ross.moore at mq.edu.au<mailto:rick.minter at mq.edu.au>

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