How to produce Unicode characters with Matlab LaTex interpreter - matlab

I have the following line of code
ylabel('Średnia wartość parametru $f_{max}$','Interpreter','latex');
and would like to use it as a label for my plot. Unfortunately what I actually get is:
Warning: Unable to interpret LaTeX string
If I remove Unicode characters like so:
ylabel('Srednia wartosc parametru $f_{max}$','Interpreter','latex');
it works with no problem.
So how could I make Matlab print those unfortunate characters?

Use LaTeX representations for those characters: \'S, \'s, etc. And don't forget to duplicate quote signs within the string:
ylabel('\''Srednia warto\''s\''c parametru $f_{max}$','Interpreter','latex')

Related

Difference between unicode 0001 and 2401?

I am trying to use the SOH character as a delimiter for a CSV file that my code generates. However, it looks like there are two unicode characters for SOH?
https://www.compart.com/en/unicode/U+2401
https://www.compart.com/en/unicode/U+0001
I am not sure what is the difference between the two is? or which one should I use?
U+0001 is the control character. U+2401 is a symbolic picture of the character.
Example: ␁ (May not display in all browsers, but is a single pictograph of SOH)

Unicode variable labels

I have a dataset but its variable labels are in unicode like this:
I tried typing:
unicode
However, this simply displays the following:
How can I correctly display the unicode?
Or, at least, is there any method I can see the labels using another program?
Assuming your data are in a file data.dta in your working directory (where Stata should point):
clear
unicode encoding set euc-kr
unicode translate data.dta
Type help encodings from Stata's command prompt for details regarding the different formats.

Unicode character creation in Python 3.4

Using Python 3.4, suppose I have some data from a file, and it is literally the 6 individual characters \ u 0 0 C 0 but I need to convert it to the single unicode character \u00C0. Is there a simple way of doing that conversion? I can't find anything in the Python 3.4 Unicode documentation that seems to provide that kind of conversion, except for a complex way using exec() of an assignment statement which I'd like to avoid if possible.
Thanks.
Well, there is:
>>> b'\\u00C0'.decode('unicode-escape')
'À'
However, the unicode-escape codec is aimed at a particular format of string encoding, the Python string literal. It may produce unexpected results when faced with other escape sequences that are special in Python, such as \xC0, \n, \\ or \U000000C0 and it may not recognise other escape sequences from other string literal formats. It may also handle characters outside the Basic Multilingual Plane incorrectly (eg JSON would encode U+10000 to surrogates\uD800\uDC00).
So unless your input data really is a Python string literal shorn of its quote delimiters, this isn't the right thing to do and it'll likely produce unwanted results for some of these edge cases. There are lots of formats that use \u to signal Unicode characters; you should try to find out what format it is exactly, and use a decoder for that scheme. For example if the file is JSON, the right thing to do would be to use a JSON parser instead of trying to deal with \u/\n/\\/etc yourself.

Package inputenc Error: Unicode char \u8:β not set up for use with LaTeX

One of my references in Bibdesk contains some latin/Greek character e.g. 'β'. I am getting the error while using the reference in TEXMAKER:
"! Package inputenc Error: Unicode char \u8:β not set up for use with LaTeX."
How can I set it up to work?
Though with inputenc TeX can read all the unicode characters, it doesn't know what to do with most of them, except those in the usual ascii range. I once also had a problem with that, when I wanted to copy some unicode text verbatim into one of my TeX documents, and that text contained symbols like alpha, or other math symbols.
The solution to that is the command \DeclareUnicodeCharacter{#1}{#2} where in #1 you have to put the unicode value of the character and in #2 a tex expression, that gets inserted, when character code #1 is encountered. E.g. for the beta you could use \DeclareUnicodeCharacter{03B2}{\ensuremath{\beta}}, because 03B2 is the unicode character value for the symbol "beta" (you have to look those things up in a Unicode table).
I've also written a tex package for that, if you're interested. It can be found on github at https://github.com/ezander/utf8math. See especially this file here: https://github.com/ezander/utf8math/blob/master/utf8math.sty
Another solution is to use XeTeX, which is more suitable than most other TeX engines for unicode : replace the lines
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
with
\usepackage{fontspec}

Using Unicode in fancyvrb’s VerbatimOut

Problem
VerbatimOut from the “fancyvrb” package doesn’t play nicely with UTF-8 characters.
Minimal working example:
\documentclass{minimal}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{fancyvrb}
\begin{document}
\begin{VerbatimOut}{\jobname.test}
é
\end{VerbatimOut}
\input{\jobname.test}
\end{document}
Error message
When compiled using pdflatex mini, this gives the error
File ended while scanning use of \UTFviii#three#octets.
A different error occurs when the sole occurrence of é above is replaced by something else, e.g. é */:
Package inputenc Error: Unicode char \u8:### not set up for use with LaTeX.
– indicating that in this case, LaTeX succeeds in reading a multi-byte UTF-8 character, but not knowing what to do with it (i.e. it’s the wrong character).
In fact, when I open the produced .test file manually, it contains the character é, but in Latin-1 encoding!
Proof: when I open the files in a hex editor, I get the following:
Original file: C3 A9 (corresponds to LATIN SMALL LETTER E WITH ACUTE in UTF-8)
Written file: E9 (corresponds to é in Latin-1)
Question
How to set VerbatimOut up correctly?
filecontents* (from “filecontents”) shows that it can work. Unfortunately, I don’t understand either code so I cannot fix fancyvrb’s code by replicating the logic from filecontents manually.
I also cannot use filecontents* instead of VerbatimOut because the former doesn’t work within a \newenvironment, while the latter does.
(Oh, by the way: vanilla Verbatim instead of VerbatimOut also works as expected. The error seems to occur when writing the file, not when reading the verbatim input)
Is your end goal to write symbols and accents in Verbatim? Because you can do that like this:
\documentclass{article}
\usepackage{fancyvrb}
\begin{document}
\begin{Verbatim}[commandchars=\\\{\}]
\'{e} \~{e} \`{e} \^{e}
\end{Verbatim}
\end{document}
The commandchars option allows the \ { } characters to work as they normally would.
Source: http://ctan.mirror.garr.it/mirrors/CTAN/macros/latex/contrib/fancyvrb/fancyvrb.pdf
This is still unfixed? I'll take another look. What exactly do you want: your package to use VerbatimOut, or for it not to interfere with it?
Tests
TexLive 2009's Xelatex compiles fine. With pdflatex, version
This is pdfTeX, Version 3.1415926-1.40.10 (TeX Live 2009)
I get an error message that is rather more useful error message than you got:
! Argument of \UTFviii#three#octets has an extra }.
\par
l.8 é
? i \makeatletter\show\UTFviii#three#octets
! Undefined control sequence.
\GenericError ...
#4 \errhelp \#err# ...
l.8 é
If I were to make a wild guess, I'd say that inputenc with pdftex uses the pdftex primitives to do some hairy storing and restoring of character tables, and some table somewhere has got a rarely mistake in it.
Possibly related
I saw a post by Vladimir Volovich in the pdf-tex mailing list archives, all the way back from 2003, that discusses a conflict between inputenc & fancyvrb, and posts a patch to "solve the problem". Who knows, maybe he faced the same problem? It might be worth emailing him.
XeTeX has much better Unicode support. The following run through xelatex produces “é” both in \jobname.test and the output PDF.
\documentclass{minimal}
\usepackage{fontspec}
\tracingonline=1
\usepackage{fancyvrb}
\begin{document}
\begin{VerbatimOut}{\jobname.test}
é
\end{VerbatimOut}
\input{\jobname.test}
\end{document}
fontspec loads the Latin Modern fonts, which have Unicode support. The standard TeX Computer Modern fonts don’t have the right tables for Unicode support.
If you use a character that does not have a glyph in the current font, by default XeTeX writes a blank space to the PDF and prints a warning in the log but not on the terminal. \tracingonline=1 prints the warning to the terminal.
On http://wiki.portal.chalmers.se/agda/pmwiki.php?n=Main.LiterateAgda, they suggest that you should use
\usepackage{ucs}
\usepackage[utf8x]{inputenc}
in the preabmle. I successfully used this in order to insert unicode into a verbatim environment.
\documentclass{article}
\usepackage{fancyvrb}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\newenvironment{MonVerbatim}{%
\count0=128\relax %
\loop
\catcode\count0=11\relax
\advance\count0 by 1\relax
\ifnum\count0<256
\repeat
\VerbatimOut[commandchars=\\\{\}]{VerbatimText.tex}%
}{\endVerbatimOut}
\newcommand\test{A command producing accented characters éà}
\begin{document}
\begin{MonVerbatim}
A little bit text in verbatim mode éà_].
\test
\end{MonVerbatim}
Followed by some accented character éà.
\end{document}
This code is working for me with TeXLive 2018 and pdflatex. Yous should
probably avoid changing catcode if you are using a 16 bits TeX (lualatex or xelatex).
You can use the package "iftex" to check the tex engine used.