[Xy-pic] xy-pic question
Ross Moore
ross at ics.mq.edu.au
Sat Jan 9 23:59:08 CET 2010
Hi Michael,
On 07/01/2010, at 1:11 AM, Michael Gass wrote:
> Ross,
>
> How can I get something like $A \subseteq B$ within xy-pic?
> In particular, how can I get a vertical version of the above?
> For instance, a triangle where the left and right side "arrows"
> are replaced by subset symbols. I have looked hard in the
> documentation and cannot find how to do it.
Is this what you want ?
Set an empty arrow, then drop the character (rotated)
half-way along, as a "break".
To get the rotated character you'll need to use the
PostScript backend, which requires processing via
dvips + Ghostscript, rather than directly in pdfLaTeX.
So the Xy-pic Reference manual for the syntax to specify
rotating a character to match the current direction
(which is set by the empty arrow).
>
> Thank you for any help you can give me.
Alternatively, you might just put the \subseteq symbols
above ordinary arrows, as a label.
But even then you may want to rotate it.
Here is example coding:
\documentclass[11pt]{article}
\usepackage{amsmath}
\usepackage{amsfonts}
\usepackage[dvips,ps,rotate,all]{xy}
\begin{document}
$$
\xymatrix{
& A \ar@{}[dl]|*[vflip][@]{\subseteq} \ar@{}[dr]|*[@]{\subseteq}& \\
B\ar [rr]|*+[@]{\subseteq}& & C }
$$
$$
\xymatrix{
& A \ar[dl]_(.4)*+[vflip][@]{\scriptstyle\subseteq}
\ar[dr]^*-[@]{\scriptstyle\subseteq}& \\
B\ar [rr]^{\subseteq}& & C }
$$
\end{document}
... which produces the attached image.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: texshop_image.jpeg
Type: image/jpeg
Size: 18425 bytes
Desc: not available
URL: <http://tug.org/pipermail/xy-pic/attachments/20100110/d3611e91/attachment.jpeg>
-------------- next part --------------
Note the need to "flip" the character before rotating,
to make it point down & left.
>
> Michael Gass
Hope this helps,
Ross
------------------------------------------------------------------------
Ross Moore ross at maths.mq.edu.au
Mathematics Department office: E7A-419
Macquarie University tel: +61 (0)2 9850 8955
Sydney, Australia 2109 fax: +61 (0)2 9850 8114
------------------------------------------------------------------------
More information about the xy-pic
mailing list