TikZ: Unexpected difference between \draw and -- vs \path and edge

Asked Jul 25 '14 at 20:26

Active Jul 25 '14 at 21:01

Viewed 986 times

While modifying this answer for my own use, I encountered something unexpected. In my experience, using \draw (1) -- (2) is equivalent to \path (1) edge (2). However, adding the option to draw or edge suggested in the linked answer gives different outcomes:

enter image description here

\documentclass[tikz,border=10pt]{standalone}
\usepackage{tikz}
\usetikzlibrary{arrows,decorations.markings}

\tikzset{
 ->-/.style={
  decoration={
   markings,
   mark=at position 0.5 with {\arrow[xshift=1.4pt]{angle 90}, \node[below] {+};}
  },
  postaction={decorate}
 }
}

\begin{document}
\begin{tikzpicture}
 \node (1) {};
 \node (2) [right of=1] {};
 \draw[->-] (1) -- (2);

 \node (3) [below of=1] {};
 \node (4) [right of=3] {};
 \path (3) edge[->-] (4);
\end{tikzpicture}
\end{document}

Question

What is the reason for this different behavior?

edited Apr 13 '17 at 12:36

Community

asked Jul 25 '14 at 20:26

Tyson Williams

6,100

I get the same output in each case here. In general, though, aren't edges supposed to be different in that they are constructed after the main path rather than as part of it? – cfr Jul 25 '14 at 20:44
Which answer is that? And I also don't get any difference. Must be some global option interfering. And edges are to paths not lines. – percusse Jul 25 '14 at 20:55
@percusse Oh, yes, sorry. Added the missing link. – Tyson Williams Jul 25 '14 at 21:02
3

I'm voting to close this question as off-topic because the problem is not reproducible with a current TeX distribution. – Paul Gessler Jan 24 '15 at 04:34
@Paul What is your definition of "a current TeX distribution"? – Tyson Williams Jan 24 '15 at 06:22
@TysonWilliams: See How do I update my TeX distribution? – Werner Jan 24 '15 at 06:34
@Werner I don't want to update my TeX distribution. I want to know what Paul means by "a current TeX distribution". – Tyson Williams Jan 24 '15 at 06:38
1

@TysonWilliams, at the present time, TeX Live 2014, MikTeX 2.9, or MacTeX-2014 with all packages updated using the chosen distribution's package manager. – Paul Gessler Jan 24 '15 at 14:31

TikZ: Unexpected difference between \draw and -- vs \path and edge

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