TeX, LaTeX and Friends - 2012-09-06 (page 2 of 2)

Gonzalo Medina

6:06 PM

@PauloCereda Tested and works as expected. Thanks, again!

Paulo Cereda

@GonzaloMedina Yay! :) Thankfully we didn't forget to turn the alpha channel off this time. :)

percusse

6:17 PM

@PauloCereda Martin already commented in the blogspot. :)

agodemar

Hello to all

Paulo Cereda

@MartinScharrer: Martin, you are fantastic! :)

Paulo Cereda

7:11 PM

@agodemar 'ello! :)

egreg

@agodemar Ciao, Agostino!

tohecz

Hi! Does anybody know Sigitas Tolušis? I'm trying to get into his package cuted, I need to change its behaviour a bit...

Stephan Lehmke

7:46 PM

Can I make "favourite" to be more important than "ignored"? I have most distributions and editors on "ignore" because I'm mostly interested in TeX questions, but a lot of people are tacking the name of their distro or GUI to a perfectly normal question.

tohecz

@StephanLehmke You can do a great contribution by untagging them

Stephan Lehmke

@tohecz sigh I knew you'd say that. But I wonder what's the point in ignoring distro specific questions in the first place if I'm then reading them especially for retagging???

tohecz

@StephanLehmke I get your point. My comment was more a sarcasm than a seriously meant suggestion

Stephan Lehmke

8:04 PM

Ooh I can be a stealth tag editor also now. I suddenly feel so powerful ;-)

... I just don't see the purpose of releasing this privilege so late??

Andrew Stacey

8:19 PM

@cmhughes Re your answer about closing. Absolutely. There is no rush on this site. One great thing about our "Answer the Unanswered" sessions is that they clean up these questions where there's been requests for more information (or whatever) and no response by the OP. So we have no need to speed-close.

3

Joseph Wright

0

Q: tikz 3d helix torus with hidden lines

Anyone have any idea how to create a 3d helix torus in tikz that has hidden lines for invisible sections of the torus? A helix torus is a torus that uses helices it instead of small parallel(w.r.t to the torus) circles. A good visual is but but shaded part is actually the torus(glue one end ...

tikz-pgf 3d

There's an edit: not actually sure it helps! Sort-of looks like a slinky spring, so perhaps I am on the right track :-)

@AndrewStacey As I said to @cmhughes, a meta quest might be helpful here

Andrew Stacey

@JosephWright Maybe you didn't notice, but I was referring to an answer that cmhughes posted on an old meta question of mine about etiquette of closing which seemed a reasonable fit for what you were suggesting. This has bumped the question so will remind people. (That's not to say Don't ask another one if you think it warranted)

Stephan Lehmke

@JosephWright Wanna bet?

Joseph Wright

@AndrewStacey Ah, right. I could 'feature' it so it pops up in the Community Bulletin: useful?

@StephanLehmke Like I said, not sure it helps. One of the mathematicians can take a look at the math.sx question and perhaps work it out!

Sigh: There's also another comment

Stephan Lehmke

@JosephWright Certainly it takes a lot of Chuzpe to take three totally different images and claim everyone of them "almost" illustrates the same thing ;-)

Joseph Wright

8:30 PM

@StephanLehmke It's the classic problem that as the OP does know what they want, to them the explanation makes sense

@StephanLehmke As you say, the images are all different and I really can't be sure what is actually wanted

Stephan Lehmke

@JosephWright Oh wow he's not the type who makes friends easily...

Joseph Wright

@StephanLehmke No. There's another edit, which does sound very much like my concept of what is wanted. I think I'll ask.

cmhughes

@AndrewStacey yes, I agree, there's usually no rush- there were just a couple of cases recently that motivated me to respond to your question

@JosephWright I started composing a question, but was pointed to @AndrewStacey's question, so decided not to start a new question- didn't want to duplicate; would have been very ironic to have it closed considering the content :)

Andrew Stacey

8:49 PM

\documentclass{article}

\usepackage{pgfplots}

\begin{document}

\begin{tikzpicture}
    \begin{axis}[view={70}{40},
       xlabel={$x$},
       ylabel={$y$},
       zlabel={$z$},
       zlabel style={rotate=90},
       ]
       \addplot3[surf,
       colormap/greenyellow,
       samples=40,
       domain=0:2*pi,y domain=0:20*pi,
       z buffer=sort]
       ({(.25*cos(deg(x))) + cos(deg(y))}, {(3 + (.25*sin(deg(x))) +
sin(deg(y)))*cos(deg(y/10))}, {3 * sin(deg(y/10))});
    \end{axis}
\end{tikzpicture}

cmhughes

I made one comment to the helix guy and he flames me.

Andrew Stacey

But it takes a few moments to compile and I need to increase something to make it more rounded. Could it be farmed off to gnuplot?

(Incidentally, yes that is @cmhughes's code with a small alteration)

cmhughes

@AndrewStacey it looked familiar :)

Andrew Stacey

A quick glance at the pgfplots convinces me that it could be done with gnuplot, but that I haven't enough experience with pgfplots to figure it out. Anyway, from reading the description now then that is my best guess at what he's asking for. It certainly was not clearer before and that's my official opinion as a professional mathematician.

cmhughes

9:04 PM

@AndrewStacey I'm going to have a go at getting gnuplot to do the hard work- if nothing else it'll be fun to try something new :)

Andrew Stacey

@cmhughes I'd like to see the results.

cmhughes

@AndrewStacey will do :) looks promising at the moment (famous last words :) )

tohecz

@StephanLehmke I know it's tricky. It should be an occasional thing

Stephan Lehmke

9:23 PM

@tohecz Still, page breaking inevitably means output routine, and this means footnotes, floats and a lot of other stuff getting in the way...

cmhughes

9:37 PM

@AndrewStacey a starting point?

% http://tex.stackexchange.com/questions/45775/pgfplots-in-combination-with-gnuplot-requires-additional-semicolon
\documentclass{article}

\usepackage{pgfplots}

\pgfplotsset{parametric=true}

\begin{document}

\begin{tikzpicture}
\begin{axis}[view={70}{40},
xlabel={$x$},
ylabel={$y$},
zlabel={$z$},
zlabel style={rotate=90},
]
\addplot3 [raw gnuplot,mesh] gnuplot [mesh]{
set parametric;
set isosamples 30,30;
set urange[0:2*pi];
set vrange[0:20*pi];
x(u,v)= ((.25*cos(u)) + cos(v));
y(u,v)= ((3 + (.25*sin(u)) + sin(v))*cos(v/10));

run with pdflatex -shell-escape myfile.tex

Jack Schmidt

hehe the new helix question is much clearer and nicer, but the comments are still a bit growly

percusse

9:54 PM

@JackSchmidt It's indeed weird to talk about lazyness when you can't even post an image of what you want (not even a sketch)

Andrew Stacey

10:15 PM

@cmhughes Looks okay, how do I increase the sample size? I tried putting isosamples higher (to 60,30) but that exceeded TeX's capacity.

c0772

hello, I have a question, I just asked a question and somebody just edited to make it easier to read, how can I thank him and where can I find the good way to write my question?

Torbjørn T.

@c0772 Post a comment to your question. You can alert the user who edited by saying @<username> in the comment, e.g. @Kurt. As far as highlighting code in questions/answers, select it and press Ctrl + K, or click the button marked {} above the text field. Backticks (`) are used for inline code, indenting by four spaces for blocks.

egreg

@c0772 You can enable more helps in the editing window by clicking on the ?; consult also tex.stackexchange.com/editing-help for more information.

c0772

Thanks, To edit, I will probably have forgotten that next time except moreover I do not have a back tick on my keyboard!

egreg

@c0772 You can simply select the code to highlight and press the {} button (or Ctrl-K). If you select a whole line it will be indented by four spaces, which is the signal for large code snippets; otherwise backquotes will be added around the item.

@c0772 Did you try my suggestion?

c0772

10:30 PM

I will try it for next question, too late for this one, Kurt did the job for me, ... that why I wanted to thank him!

egreg

@c0772 I meant the suggestion for your .bst problem.

@c0772 .bst files use a language in reverse Polish notation; so 0 'inlinelinks := means "set the variable inlinelinks to 0". The initial # is the concatenation symbol. So you just have to change the 0 to 1.

@c0772 I've added an answer; if it works correctly, then you can upvote it and, after some time, accept it (if no better answer comes along) by clicking on the checkmark next to the answer.

Martin Scharrer

11:30 PM

@PauloCereda Thanks! Reading your great blog entry again, I was thinking to add a sprite key to \adjustbox / \adjustimage. Maybe something like \adjustimage{sprite=1/10 2/10}{<image>} to get the 1st out of ten horizontally and the second out of then vertically.

Paulo Cereda

@MartinScharrer ooh the syntax seems very clean! :)

Martin Scharrer

@PauloCereda Yeah, sprite={10}{10}{1}{2} is less intuitive, isn't it?

Paulo Cereda

BTW the blog post is just a humble attempt of emulating the CSS spritesheet. :)

@MartinScharrer Less intuitive indeed. :)

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