2

Starting from this code where I have used xy package:

\documentclass[a4paper,12pt]{article}
\usepackage{amssymb}
\usepackage[all,cmtip]{xy}

\begin{document}
\xymatrix@!0{
& \alpha \ar@{-}[rr]\ar@{-}'[d][dd]
& & \beta D \ar@{-}[dd]
\
\gamma \ar@{-}[ur]\ar@{-}[rr]\ar@{-}[dd]
& & \delta A \ar@{-}[ur]\ar@{-}[dd]
\
& ax \ar@{-}'[r][rr]
& & bx\xi\mu
\
\Gamma_r(f(x,y)) \ar@{-}[rr]\ar@{-}[ur]
& & \lambda P \ar@{-}[ur]
}
\end{document}

enter image description here

looking this image taken in this question,

enter image description here

the labels seem to be rotated, put in a frontal perspective. Is it possible to do this with the xy package instead of tikz-cd?

Sebastiano
  • 54,118

1 Answers1

1

Second approach

With the extension Rotate and Scale extension by Ross Moore you can also achieve a similar output. Therefore, load the option \xyoption{rotate} and add the argument [@!<number>] . For further details, see p. 29 of Reference manual

\documentclass[a4paper,12pt]{article}
\usepackage{amssymb}
\usepackage[all,cmtip]{xy}
\xyoption{rotate}

\begin{document}
    \def\angle{50}
    \xymatrix@!0{
        & +[@!\angle]{\alpha} \ar@{-}[rr]\ar@{-}'[d][dd]
        & & +[@!\angle]{\beta D} \ar@{-}[dd]
        \
        \gamma \ar@{-}[ur]\ar@{-}[rr]\ar@{-}[dd]
        & & \delta A \ar@{-}[ur]\ar@{-}[dd]
        \
        & +=[@!\angle]{ax} \ar@{-}'[r][rr]
        & & +=[@!\angle]{bx\xi\mu}
        \
        \Gamma_r(f(x,y)) \ar@{-}[rr]\ar@{-}[ur]
        & & \lambda P \ar@{-}[ur]
    }
\end{document}

enter image description here

First approach

The answer of David Carlisle to Rotating labels in xypic shows you a possible solution, that is, using for example the \rotatebox command of the graphicx package.

\documentclass[a4paper,12pt]{article}
\usepackage{amssymb}
\usepackage{graphicx}
\usepackage[all,cmtip]{xy}

\begin{document}
\def\angle{50}
\xymatrix@!0{
& \rotatebox[origin=c]{\angle}{$\alpha$} \ar@{-}[rr]\ar@{-}'[d][dd]
& & \rotatebox[origin=c]{\angle}{$\beta D$} \ar@{-}[dd]
\
\gamma \ar@{-}[ur]\ar@{-}[rr]\ar@{-}[dd]
& & \delta A \ar@{-}[ur]\ar@{-}[dd]
\
& \rotatebox[origin=c]{\angle}{ax} \ar@{-}'[r][rr]
& & \rotatebox[origin=c]{\angle}{$bx\xi\mu$}
\
\Gamma_r(f(x,y)) \ar@{-}[rr]\ar@{-}[ur]
& & \lambda P \ar@{-}[ur]
}
\end{document}

enter image description here

Ñako
  • 3,626
  • Thank you nako but the label not are parallel with the line. See the pink rectangle of the 2nd image. I appreciate your effort. – Sebastiano Aug 22 '20 at 21:11
  • @Sebastiano you can add the option [origin=c], see the edit, please – Ñako Aug 22 '20 at 21:16
  • I'll probably change the initial MWE and build the basis of the second design. I'm not so sure this is just a rotation. I think there is a rotation around an axis as seen from the second figure. However infinity thank you. – Sebastiano Aug 22 '20 at 21:20