TeX, LaTeX and Friends

Joseph Wright

06:16

@UlrikeFischer, @AlanMunn I think you might need up-to-date l3backend, which had a bug in the last release related to PDF objects; I'll check

Anonymous

% arara: pdflatex
% arara: pdflatex
% arara: pdflatex

\documentclass[a4paper, landscape]{article}
\pagestyle{empty}
\usepackage[showframe=false,
margin=20mm,
]{geometry}
%\geometry{paperwidth=15cm, paperheight=30cm, margin=2mm}% optional
\usepackage{textcomp}

\usepackage{tikz}
\usetikzlibrary{calc}
\pgfkeys{/tikz/savevalue/.code 2 args={\global\edef#1{#2}}}
\pgfdeclarelayer{background}
\pgfdeclarelayer{foreground}
\pgfsetlayers{background,main,foreground}

\usepackage[most]{tcolorbox}
\tcbset{

Anonymous

06:36

\documentclass[a4paper, landscape]{article}
\usepackage[margin=0cm, showframe=false]{geometry}
\geometry{paperwidth=15cm, paperheight=30cm}
\usepackage{mwe} % Dummy images

\usepackage{comment}

\usepackage[skins]{tcolorbox}
\tcbuselibrary{raster}

\usepackage{eso-pic}
\newcommand\myvhcenter[1]
{%
\begingroup
\sbox0{#1}%
\raise.5\dimexpr\dp0-\ht0\relax\hbox to 0pt{\hss\usebox0\hss}%
\endgroup
}
\newcommand\myhcenter[1]{\makebox[0pt][c]{#1}}

\usepackage{tikz}
\usepackage{tikzpagenodes} % current page text area.center

Gaussler

@PhelypeOleinik And a similar logic applies to the difference between \tl_if_blank:nTF and \str_if_empty:nTF?

I should almost always use the latter rather than the former?

Wait, I just realize, there is no \str_if_empty:nTF, only :NTF. Why?

Joseph Wright

08:17

@Gaussler For strings, it's far easier to test for 'blank' than 'empty', and most of the time it's the right test

Ulrike Fischer

09:15

@samcarter_is_at_topanswers.xyz there is a date error in the overview (and we are very satisfied about the 9.9., also for personal reasons).

samcarter_is_at_topanswers.xyz

@UlrikeFischer Upps, should be fixed. Thanks for the ping!

Paulo Cereda

quack

Joseph Wright

@PauloCereda quack

Paulo Cereda

@JosephWright ooh a duck

Anush

@samcarter_is_at_topanswers.xyz hi

samcarter_is_at_topanswers.xyz

09:24

@Anush Hi!

Anush

I am trying to follow your advice and make separate pdf's for the expensize tikz drawings

Here I am just trying to make the picture with the smaller circles

\documentclass{standalone}
\usepackage{tikz}
\def\numcolors{10}
\def\numdots{200}

\newcommand{\tikzcircle}[2][red]{\tikz[baseline=-0.5ex]{\fill[{#1},radius=#2] (0,0) circle ;}\hspace{0pt}}%
\pgfmathparse{1/\numcolors}%
\definecolorseries{foo}{hsb}{step}{red!90!black}{\pgfmathresult,0,0}
\resetcolorseries[\numcolors]{foo}%

\newcounter{bar}
\foreach \x in {1,...,\numcolors}{
\setcounter{bar}{\x}
\newcounter{mycount\alph{bar}}
}

\begin{document}

\begin{tikzpicture}
\foreach \x in {1,...,\numdots}{%

but as you can see, I am not succeeding :)

samcarter_is_at_topanswers.xyz

@Anush You must not nest tikzpictures insides each other, that can be dangerous

Anush

@samcarter_is_at_topanswers.xyz am I nesting? Don't I \end{tikzpicture} before I \begin{tikzpicture}?

samcarter_is_at_topanswers.xyz

@Anush You are using \tikz inside a tikzpicture, that is nesting.

\documentclass{standalone}
\usepackage{tikz}
\def\numcolors{10}
\def\numdots{200}

%\setbeamertemplate{navigation symbols}{}

\newcommand{\tikzcircle}[2][red]{\tikz[baseline=-0.5ex]{\fill[{#1},radius=#2] (0,0) circle ;}\hspace{0pt}}%
\pgfmathparse{1/\numcolors}%
\definecolorseries{foo}{hsb}{step}{red!90!black}{\pgfmathresult,0,0}
\resetcolorseries[\numcolors]{foo}%

\newcounter{bar}
\foreach \x in {1,...,\numcolors}{
\setcounter{bar}{\x}
\newcounter{mycount\alph{bar}}
}

\begin{document}

\begin{minipage}{10cm}

Anush

09:41

@samcarter_is_at_topanswers.xyz thanks but is not quite what I need.

samcarter_is_at_topanswers.xyz

@Anush Can you explain?

Anush

let me just test something to see if there is an easy fix

\documentclass{standalone}
\usepackage{tikz}
\def\numcolors{10}
\def\numdots{200}

%\setbeamertemplate{navigation symbols}{}

\newcommand{\tikzcircle}[2][red]{\tikz[baseline=-0.5ex]{\fill[{#1},radius=#2] (0,0) circle ;}\hspace{0pt}}%
\pgfmathparse{1/\numcolors}%
\definecolorseries{foo}{hsb}{step}{red!90!black}{\pgfmathresult,0,0}
\resetcolorseries[\numcolors]{foo}%

\newcounter{bar}
\foreach \x in {1,...,\numcolors}{
\setcounter{bar}{\x}
\newcounter{mycount\alph{bar}}
}

\begin{document}
\pgfmathsetseed{2}

that almost does it

I think the only problem is the page width

I use \setbeamersize{text margin left=10mm,text margin right=5mm} in beamer

so I need to imitate that

samcarter_is_at_topanswers.xyz

use a 11.3cm minipage then

Anush

that still isn't right

samcarter_is_at_topanswers.xyz

@Anush are you using default aspect ratio? The it should be 12.8-1-0.5

Anush

09:49

that's what I am looking for

Paulo Cereda

@Anush You want confetti? :)

Anush

:)

it is demonstrating an algorithm

samcarter_is_at_topanswers.xyz

@PauloCereda I was thinking about smarties

Paulo Cereda

@samcarter_is_at_topanswers.xyz ooh chocolate

Anush

@samcarter_is_at_topanswers.xyz my entire preable is bpa.st/WEJ

I don't think I change the aspect ratio

samcarter_is_at_topanswers.xyz

09:50

@Anush I get an error from the website

@Anush Can you show me the first line of your beamer file

Anush

bpa.st/WEJA

is that better?

samcarter_is_at_topanswers.xyz

@Anush yes. Looks like default ratio. Then it should be 11.3cm

\documentclass{standalone}
\usepackage{tikz}
\def\numcolors{10}
\def\numdots{200}

%\setbeamertemplate{navigation symbols}{}

\newcommand{\tikzcircle}[2][red]{\tikz[baseline=-0.5ex]{\fill[{#1},radius=#2] (0,0) circle ;}\hspace{0pt}}%
\pgfmathparse{1/\numcolors}%
\definecolorseries{foo}{hsb}{step}{red!90!black}{\pgfmathresult,0,0}
\resetcolorseries[\numcolors]{foo}%

\newcounter{bar}
\foreach \x in {1,...,\numcolors}{
\setcounter{bar}{\x}
\newcounter{mycount\alph{bar}}
}

\begin{document}
\pgfmathsetseed{2}%

Anush

brilliant! Let me try to include it

samcarter_is_at_topanswers.xyz

a couple if % had been missing

Anush

ah ok

samcarter_is_at_topanswers.xyz

09:55

(the vertical space between the lines might be a bit larger than in beamer because the font is substituted with 5pt)

Anush

brilliant.. saving time already

thanks

samcarter_is_at_topanswers.xyz

@Anush You're welcome!

Gaussler

How do I wrote \xetex in non-XeTeX engines?

TeXnician

@Gaussler Have a look at the hologo package.

Gaussler

@TeXnician Thanks!

Anush

10:00

in tikz, how do you draw a line the full width of the screen or how do you tell what that is in the measurements tikz needs?

I will need to divide this by powers of 2 so ideally I could just declare it to be 64 and have 64 be the width of the slide

but I can cope if that is hard

samcarter_is_at_topanswers.xyz

@Anush You know the width, so

Paulo Cereda

@yo' bbc.com/news/world-europe-54041568

samcarter_is_at_topanswers.xyz

\begin{tikzpicture}
\draw[red] (0,0) -- (11.3cm,0);
\end{tikzpicture}

Anush

oh ok. I will get my calculator out :)

Paulo Cereda

> 253 emails have been leaked from private (high-level) mailing lists of Debian, in which its representatives vocally complain about the talk Linus Torvalds gave at the most recent DebConf conference. Some people insist that he should be permanently banned from future conferences because the language he uses is inappropriate and infringes on the project's Code of Conduct. This could set a very bad precedent for the open source community, which has recently seen an influx of various CoC policies applied to a number of high-profile projects mostly after very vocal concerns from the people who…

Huzzah for GitHub then. :)

Paulo Cereda

10:24

I love this part: "No one asked him any good RNG questions."

Anush

how can I label my underbraces? I want to some text under them. bpa.st/SIMQ

Joseph Wright

@PauloCereda SlashDot?

Paulo Cereda

@JosephWright Yes, but I am going through the the mail archives. It's been fun.

Joseph Wright

@PauloCereda It's from 2014?

Paulo Cereda

@JosephWright yes. :) schestowitz.com/Selected_Mail/2020/debconf-torvalds-private

Anush

10:30

solved it

samcarter_is_at_topanswers.xyz

@Anush \node[yshift=-0.8cm] at ($(5.65,0)!0.5!(11.3,0)$) {f};

Anush

thanks!

\draw [
decoration={
brace,
mirror,
raise=0.2cm
},
decorate
] (0,0) -- node[below=2ex] {even} (5.65,0);

that also works

samcarter_is_at_topanswers.xyz

@Anush Ah, yes that's easier

Paulo Cereda

@JosephWright ah I just love Norbert's messages.

Anush

10:54

@samcarter_is_at_topanswers.xyz topanswers question posed :)

samcarter_is_at_topanswers.xyz

11:07

@Anush posted a couple of workarounds

Anush

thanks!

cis

Is there a way to set <this> global?

\includegraphics[<this>]{example-image}

Anush

both are very helpful

Ulrike Fischer

11:42

@cis \setkeys{Gin}{this} normally.

Pablo González L

3

@PauloCereda :)

Paulo Cereda

@PabloGonzálezL ooh

Pablo González L

3

Paulo Cereda

@PabloGonzálezL ooh

Pablo González L

@PauloCereda Today is a good day to review the entire saga :)

samcarter_is_at_topanswers.xyz

12:03

@PabloGonzálezL You'll have to hurry to finish today, because tomorrow it is time to review daysoftheyear.com/days/star-trek-day

Pablo González L

@samcarter_is_at_topanswers.xyz To finish watching Star Trek you would need a couple more quarantines :)

samcarter_is_at_topanswers.xyz

@PabloGonzálezL A time machine would also do :)

Pablo González L

@samcarter_is_at_topanswers.xyz it would be great to have a "Duck Wars" and a "Duck Trek" in tikzducks:-)

samcarter_is_at_topanswers.xyz

github.com/samcarter/tikzducks/blob/master/duckpond/…

@PabloGonzálezL ^^^

Pablo González L

@samcarter_is_at_topanswers.xyz Interesting

There are some packages equivalent to pst-geometrictools in TikZ?

samcarter_is_at_topanswers.xyz

12:17

@PabloGonzálezL I think someone from technique.fr was working on something like that in tikz. Let me search

Pablo González L

@samcarter_is_at_topanswers.xyz Thank you, I am trying to move from 'pst-eucl' to 'tkz-euclide'...but the elementary constructions (for primary school) need these explanatory elements

Phelype Oleinik

@JosephWright Any idea why (for example, in latex2e) github-0360 fails with:

***************
*** 14,20 ****
  \g__pdf_backend_link_sf_int=\count...
! ) (github-0360.aux)
  LaTeX Font Info:    Checking defaults for OML/cmm/m/it on input line ....
--- 14,21 ----
  \g__pdf_backend_link_sf_int=\count...
! )
! (github-0360.aux)
  LaTeX Font Info:    Checking defaults for OML/cmm/m/it on input line ....

samcarter_is_at_topanswers.xyz

@PabloGonzálezL Have a look at texnique.fr/osqa/questions/7782/… (and other questions by this user)

Phelype Oleinik

@JosephWright but in Travis it passes? And if I change, then it works locally but Travis fails

Ulrike Fischer

@PhelypeOleinik which test?

Phelype Oleinik

12:25

@UlrikeFischer l3build check github-0360 in the latex2e repo

Pablo González L

@samcarter_is_at_topanswers.xyz If that code can help me :) ...the compass is the most complicated part, here in the forum I have seen nice examples, maybe I will propose Alain to add it in the new 'tkz-elements

@PhelypeOleinik Como está seu dia? ...com "ondas" de problemas :)

Phelype Oleinik

@PabloGonzálezL Oh, ¡hola! Its going well, today it's national holiday here, so I have some free time to break LaTeX :-)

@PabloGonzálezL How about you?

Pablo González L

@PhelypeOleinik Entertained trying to re-do some constructions from pstricks to tikz

Ulrike Fischer

@PhelypeOleinik try to load expl3 earlier (to force that the backend is loaded before the \START).

Joseph Wright

@PhelypeOleinik Line break 'fun' between systems :(

Phelype Oleinik

12:37

@UlrikeFischer Ops, sorry, it was l3build check -c config-lthooks2 github-0360. Never trust OP ;-)

@UlrikeFischer Yeah, that should do it. Thanks!

Ulrike Fischer

@PhelypeOleinik I managed to find the test ;-)

Pablo González L

@JosephWright For reporting purposes only (I know there is always someone to blame), the copyright line of texpert.txt needs to be updated :)

Phelype Oleinik

@JosephWright I recall some similar issue with a latex3 test on a Windows machine...

@UlrikeFischer :-)

@JosephWright m3tl-build001, if I recall correctly

Joseph Wright

13:12

@PabloGonzálezL WE'll look at that

@PhelypeOleinik YuP

@PhelypeOleinik Currently I'm wondering about whether to stick on Windows or move to ... something else

@UlrikeFischer Seen the message on the dvipdfmx list?

Phelype Oleinik

@JosephWright The problem is that sometimes you need Windows...

@JosephWright For some time I used a virtualbox with Windows on a Linux machine. It worked pretty well

@JosephWright Here on my PC I have dual boot

Joseph Wright

@PhelypeOleinik No question

@PhelypeOleinik Indeed

Ulrike Fischer

@JosephWright about the color stacks? yes. I already tried yesterday, but they wasn't there yet. I'm not sure, if I should use it for the transparent code - it makes the code pathes more similar, but the special is much shorter ;-). But it could be useful for other things.

yo'

13:38

@barbarabeeton well, the thing is, @PauloCereda has never seen snow, so we should make it in the winter. I can give him a link to a nice company that makes very very good thermalwear :)

@PauloCereda whatever blows the people's minds :-)

Paulo Cereda

13:54

@yo' :D

barbara beeton

14:24

@yo' -- Sounds like a very good plan.

yo'

@barbarabeeton :)

Paulo Cereda

@yo' ooh a discount

yo'

@PauloCereda ?

Paulo Cereda

@yo' to buy thermalwear thingy. :)

yo'

@PauloCereda ah well, uniqlo is not really expensive on thermal underwear. I was actually quite surprised by the price.

Paulo Cereda

14:35

@yo' ooh :)

ooh what's a smart pants

Damn those intelligent clothing

yo'

@PauloCereda ?

Paulo Cereda

@yo' I am browsing their site and found a link to "smart pants"

@yo' sorry today I am idioter :)

@yo' uniqlo.com/us/en/men/smart-pants

yo'

@PauloCereda oh I'm browsing the French one, so it's probably something like "pantalons malins"

Paulo Cereda

@yo' :D

yo'

@PauloCereda I'm completely unsure whether smart here is about technology or about looks.

Paulo Cereda

14:38

@yo' perhaps the pants could make some calculations :)

Looks like the concept of smart pants is similar to the glue system employed by TeX. It's sad to realize a piece of fabric understands TeX way better than me...

4

cis

14:52

pgfmathsetmacro in the loop, the variable \i, one shouldn't use \def, and this and that is bad style etc. etc. etc.

These are all splitting hairs that nobody cares about.

Kind of like that ...

But I will not support this line by line.
In my opinion, this is a reasonable implementation of such a task. You can take it or do it differently.

% arara: pdflatex
% arara: pdflatex
% arara: pdflatex
% arara: ghostscript: {  resolution: 166  , device: png16m, allpages: true}

\begin{filecontents*}[overwrite]{\jobname-data.txt}
Object Date     North  East  Wight Vol  Dens   ImageNo ImageName
0001   2020.08  51.2   49.1  56    120    0.65    1            AImagename
0001   2020.08  51.2   49.1  56    120    0.65    2            A-Image-name
0001   2020.08  51.2   49.1  56    120    0.65    3            A-Image-name
0001   2020.08  51.2   49.1  56    120    0.65    4            A-Image-name

Joseph Wright

15:10

@PhelypeOleinik Using more expl3 I see :)

Phelype Oleinik

@JosephWright Yes! :D (though the \char_generate:nn was Bruno reviewing my code :-)

@JosephWright It's good to have an extra pair of eyes

Joseph Wright

@PhelypeOleinik Cool

@PhelypeOleinik Yup: there's a reason we've moved toward a PR/review workflow, at least for core stuff

Ulrike Fischer

15:25

@JosephWright ? do I miss something, I see no new comments.

Phelype Oleinik

15:50

@UlrikeFischer This commit: github.com/latex3/latex2e/commit/e2748bd6

Anonymous

@cis Thank you very much. I will look at it this week and try to adapt it a bit to meet the shared middle y-rulers (to not print the y-rulers on top of the images). And see how it compares to the code by @UlrichDiez at tex.stackexchange.com/a/561628/67761 Also curious to see how it compares in compilation speed.

Paulo Cereda

16:13

> China bans Scratch, MIT’s programming language for kids

@DavidCarlisle ^^

Anonymous

17:05

Is there an easy way to have a couple of Tex docs workflow bundled into a desktop app? i.e. to create the app?

Skillmon likes topanswers.xyz

19:13

@VincentMiaEdieVerheyen I'm not sure I understand what you're asking. What do you mean by "Tex docs workflow"?

Anonymous

19:58

@Skillmonlikestopanswers.xyz I have never created any desktop app before, so I am looking for an easy way to create one, and ask for some inpute (some images), then have some tex document compile by pushing certain GUI buttons on an app, then have the output of those documents compile by another tex document ... things like that.

Anonymous

If anyone has experience with that?

TeXnician

@VincentMiaEdieVerheyen Do you want to require the user to have a TeX installation?

Skillmon likes topanswers.xyz

@VincentMiaEdieVerheyen which programming languages are you familiar with? Tk is a rather simple (and simplistic) toolkit with good cross-platform support and bindings/libraries for many languages. Other than that GTK is very widespread and much more fleshed out, compared to Tk.

Anush

21:51

S there any way to calculate the number of trailing zeros in the binary expansion of a positive integer in pgf?

David Carlisle

22:01

@Anush \count@=0 \loop\ifodd\n\else\advance\count@1\divide\n by 2\repeat probably leaves the right number in \count@ (untested:-)

egreg

22:34

@Anush Here's an expandable macro.

\documentclass{article}
\usepackage{xparse}

\ExplSyntaxOn

\NewExpandableDocumentCommand{\trailingzeros}{m}
 {% #1 should be an integer expression
  \anush_trailingzeros:n { #1 }
 }
\NewExpandableDocumentCommand{\binary}{m}
 {
  \int_to_bin:n { #1 }
 }

\cs_new:Nn \anush_trailingzeros:n
 {
  \__anush_trailingzeros:nn { #1 } { 0 }
 }
\cs_generate_variant:Nn \__anush_trailingzeros:nn { ee }

\cs_new:Nn \__anush_trailingzeros:nn
 {
  \int_if_odd:nTF { #1 }
   { #2 }
   { \__anush_trailingzeros:ee { \int_eval:n { #1 / 2 } } { \int_eval:n { #2+1 } } }

Transcript for

$TeX - LaTeX$ TeX, LaTeX and Friends