I have a defined style which I am applying to many arrows. Most of the time, I want them to have label nodes positioned using auto, but occasionally I do not. Currently, I simply add auto wherever necessary. Since auto is the default, though, it would seem more natural to include it in the style; but if I do so, is there a way to occasionally turn it off?

Currently writing e.g.:

  \draw[myarrow,auto] (0,0) to node {L} (0,1);
  \draw[myarrow,auto] (1,0) to node {L} (1,1);
  \draw[myarrow,auto] (2,0) to node {L} (2,1);
  \draw[myarrow] (3,0) to node {M} (3,1);

Would prefer to write something like:

  \draw[myarrow] (0,0) to node {L} (0,1);
  \draw[myarrow] (1,0) to node {L} (1,1);
  \draw[myarrow] (2,0) to node {L} (2,1);
  \draw[myarrow,not auto] (3,0) to node {M} (3,1);

but I don’t know what to put for not auto.

  • @percusse: OK, I fail on reading comprehension — I had looked over that section of the manual several times over and somehow missed this! If you make that an answer, I’ll accept it. – Peter LeFanu Lumsdaine Feb 27 '13 at 22:14
  • No problem at all. The CVS version manual is 1052 pages ;) – percusse Feb 27 '13 at 22:39

The auto option is both an anchor selector and at the same time an on/off switch. That means you can both use auto=<left,right> and auto=<true,false>.

For the interested

\tikzoption{auto}[]{\csname tikz@install@auto@anchor@#1\endcsname}

is how it is defined. So whatever option is given replaces #1 and providing false option or just using auto causes the following to be triggered.


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