[Xy-pic] arc overshooting endpoint
Leslie Saper
saper at math.duke.edu
Sat Mar 5 05:08:02 CET 2011
Hello,
The following code produces two diagrams. The first connects the origin
to point at <10pc,4pc> by a circular arc beginning with an angle of 45
degrees. The output is as expected. The code for the second diagram is
identical except the point is 1 pica higher. But in the output the arc
overshoots the point by around 3/4 inches.
\documentclass{article}
\usepackage[arc,pdf]{xy}
\begin{document}
\xy
*\dir{*}
;+<10pc,4pc>*\dir{*}
,{\ellipse ru,_{}}
\endxy
\xy
*\dir{*}
;+<10pc,5pc>*\dir{*}
,{\ellipse ru,_{}}
\endxy
\end{document}
What did I do wrong? Or is this to be expected and why?
I am using Xy-pic version 3.8.4 processed with pdflatex. The output pdf
file may be found at
https://www.math.duke.edu/faculty/saper/arc_test.pdf
Thanks,
Leslie Saper
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