Qrrbrbirlbel

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2h	comment	How to rotate a TikZ label Another solution would be to overwrite the automatically computed anchor (e.g. `label={[rotate=-90,anchor=west]below:a long text}`, note the change of direction), though in this case, I probably would prefer “real” nodes for their flexibility.
2h	comment	How can I set the tikz label anchor explicitly? For having the same effect on labels of coordinates one must add `\let\tikz@compute@direction\pgfutil@gobble` to the (improved) `anchor` key.
2h	comment	How to rotate a TikZ label (I’d use `xshift` or `yshift` for correcting the label placement instead of fiddeling with the `text depth`, especially if you want to use (drawing/filling/referencing) the label later.) The `rotate` key rotates around the `anchor` of the label which is automatically set to `west` as you use `right` (or `east`) for the label’s direction. Instead of labeling an empty node, one should label a coordinate, an additional `label distance` can be provided: `\path (2.5,1) coordinate [label={[rotate=-90]right:{a long text}}];`
1d	revised	Checking if a string contains # with its original catcode markup-fix (space/␣)
2d	comment	Add annotations at right margin of plot The `execute at end plot visualization` code may not get executed twice, but the `add node at x` style gets with the `+` and without the mentioned options. To test it, add `\newcounter{test}` to the preamble and `/utils/exec=\stepcounter{test}\errmessage{\arabic{test}}` to the `add node at x` style. If you use the style twice (`[add node at x={3}{B4LYP},add node at x={4}{B3LYP}]`), you will get something similar to what @Jellby reported.
2d	comment	Add annotations at right margin of plot Without the options `cycle list name=linestyles*` and `clip mode=individual` the `execute at end plot visualization` gets executes twice.
2d	comment	*Modifying `` and `o` style tikz arrows so that they are centered at the end of line** A similar problem arises with the `\|` and the `[`/`]` arrows (well, actually, all arrows are defined this way): TikZ arrow tip is displaced
2d	comment	Add annotations at right margin of plot Related: Align pinned nodes in PGFplots
2d	answered	How can I \Aboxed a Matrix?
2d	comment	How can I \Aboxed a Matrix? Enclose the `pmatrix` in the `\Aboxed` version in a pair of braces `{ }`. The `\Aboxed` macro works by scanning its argument for `&`, the `{ }` hide those from it.
May 19	comment	How to surround portions of a tree with boxes How do you create your trees? Can you show us your code? For TikZ-based solution the `fit` library will help.
May 19	revised	trees wiki excerpt edited body
May 19	comment	How do I embed an external image within tikzpicture? `\pgftext` is not a TikZ command. The `\node` thing from @Jubobs should work. `\pgftext[at={\pgfpoint{0pt}{0pt}}]{…}` and `\pgftext[x=100pt, y=0pt]{…}` are possible `\pgftext` solutions. (The `at …` stuff you wrote is just ignored by TikZ as usual.)
May 19	comment	Broken tikz chains Well, you don’t have a definition for the `terminal` nor the `nonterminal` style. The example (or another one) in the PGf manual, p. 61, defines them.
May 19	comment	homemade glyph in lualatex The kerning is wrong: `\normalk x = \kf x`. Maybe: `\ooalign{\hss\kern.05em\lower.7ex\hbox{\tiny f}\hss\cr k}` or `\rlap{\kern.18em\raise.7ex\hbox{\tiny f}}k`
May 18	comment	How to draw bent arrows going to a new line in long formulas (ex. chain complexes) @kan I have included a (hopefully) improved version of your answer. It uses text width instead of minimum size (which would have also changed the height). Is this the improvement you were talking about in your comment? Of course, OP’s way of using an empty column (containing only `{}` so that a node is created) is another possibility (I’d suggest to use `&[+0pt]`), sadly one has to keep track of all the columns.
May 18	revised	How to draw bent arrows going to a new line in long formulas (ex. chain complexes) edited tags
May 18	revised	How to draw bent arrows going to a new line in long formulas (ex. chain complexes) added 2778 characters in body
May 18	comment	Which package should I use for doing a connecting homomorphism diagram like this in latex Ah, that was supposed to be xy-pic (the `\xymatrix` macro is what you are looking for). There are a few tikz-cd questions here that are very similar to your image (especially the long arrow): How to draw bent arrows going to a new line in long formulas (ex. chain complexes), How do you draw the "snake" arrow for the connecting homomorphism in the snake lemma? and Tikz-cd and snake lemma: "loseness" and centered figures.
May 18	revised	how to make this circles? edited body