Roelof Spijker

9,631 reputation

21840

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	location	Hilversum, Netherlands
	age	25
visits	member for	1 year, 7 months
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I'm a discrete mathematician. My main research interests are discrete optimization and scheduling in specific. I've been using LaTeX on and off since 2007, mostly for homework assignments. I have really gotten into it while writing my thesis though. Scheduling problems call for quite a lot of diagrams, so my main focus and interest within LaTeX is TikZ.

	9,631 reputation	bio	website	about:blank	visits	member for	1 year, 7 months
21840 badges		location	Hilversum, Netherlands		seen	May 16 at 15:01

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Mar 22	revised	How do I apply both \mathbf and \left to a \langle? added 18 characters in body
Mar 21	revised	Shifting the subcaption in subfigure Fixed code, removed thanks
Mar 21	comment	Dashed draw with a node including a fraction I can't reproduce this. When I run the file through TeX and view the DVI it's just a regular line, same when I then convert it to pdf and view that.
Mar 19	comment	problem making a commutative diagram in tikz using positioning library The top left node has a subscript, hence it has a greater depth. The `below=of x` on both nodes simply positions the new node some standard distance below `x` (`node distance` actually, which is `1cm and 1cm` by default). `below` uses the south anchor, so if one of the nodes has a greater depth it will also have a slightly lower anchor (since the centers are aligned, due to the placement using `right=of...`). This causes the new nodes to not be aligned horizontally. You can remedy this by using the center anchor explicitly. when saying `below=of ...`.
Mar 18	comment	Draw reversed path in TikZ I don't see how "drawing it reversed" (whatever that actually means) gives you the result you want. You seem to want to get a path that is reflected in x everywhere, and reflected in y half of the time. Perhaps you should draw a different part of the path and reflect that (since you want the reflection over the x axis everywhere, I suggest drawing either the left or right hand side and mirroring that). Perhaps I am just misunderstanding you, it's not terribly clear.
Mar 16	comment	How to generate stem plots with TikZ like stem() in Matlab? Take a look at the `ycomb` plot option from `pgfplots`.
Mar 13	comment	Is there an interpreter available that will convert infix to RPN? Do you want the interpreter to be in TeX? Otherwise I think this might be a bit off-topic here.
Mar 13	answered	Add a node above matrix column
Mar 8	revised	Detect if \\ can be used added 2 characters in body
Mar 6	revised	Unix Command Highlighting latex changed \verb to \texttt
Mar 6	answered	Unix Command Highlighting latex
Mar 6	comment	Unix Command Highlighting latex Usually `\texttt` is used for this kind of thing. You could wrap it with the `\indent`'s in a command to make it semantically more pleasing. Something like `\newcommand{\shellcmd}[1]{\indent\indent\texttt{\scriptsize\# #1}}`. You could then simply use `\shellcmd{apt-get --purge remove rubygems}` where you want to display the command.
Mar 6	revised	Tikz,PGFplots: drawing in node's cs placed on plot Fixed code, removed thanks
Mar 5	comment	Grid customized @Tobi: Ah, yes! I forgot about the separate `>` and `<` versions. Then it can indeed be used quite well.
Mar 5	comment	Grid customized @Tobi: it's used to get longer lines, not shorter ones. And it's not necessarily symmetrical. For instance, we might want to have better connecting vertical lines. But when we try to add a line from (4,4) to (5,4) it only needs to be made longer on one end (namely on the side of the minus). As far as I know, this isn't possible with `shorten`.
Mar 5	answered	Grid customized
Mar 5	comment	Grid customized A TikZ matrix node and some overlays should get you pretty much there. Check out the manual‌.
Mar 5	comment	TikZ: Large arrow tips at the end of smooth curves The decoration options never make it to the `edge`. The main path is drawn (which in your case is just a coordinate) and then a new path is drawn for the edge. The problem here is that you specify your decoration options on the main path and not on the edge. Page 198 of the TikZ manual explains the edge operation in detail.
Mar 5	revised	How can I draw an arc from point A -> B on a 3D sphere in TikZ? fixed image inclusion
Mar 1	comment	Splitting a beamer animation I think this would be a lot easier to diagnose if you added a minimal working example. You have some code now, but I would be interested in the definition of `\makeanimation` for instance. Best would be to just add a complete minimal working example showing the problem.