- Ifnum latex Keine Installation notwendig, Zusammenarbeit in Echtzeit, Versionskontrolle, Hunderte von LaTeX-Vorlagen und mehr An online LaTeX editor that’s easy to use. \fi \end{document} When using LaTeX, can I just use $:=$, or do I need to do something special? Skip to main content. – Stefan Kottwitz ♦. in paths. The `\count` command can be used to count the number of elements in a list. I am using a loop to define keys with the xkeyval package, as well as to actually read out the keys inside some self-defined command. Use the `\count` command. However, it is not clear whether you need the updated values of \M and \N to carry through to each successive loop iteration. But again the character-token 1 is taken for an element/the first element that belongs to a sequence of character-tokens from the set {1,2,3,4,5,6,7,8,9,0}. In den Anfängen kommt man zwar mit dem LaTeX Begleiter und dem clsguide. Comparing two integers: \ifnum\value{num}>n {A} \else {B}\fi. 5, or How TeX macros actually work: Part 4). Instead, you must nest your conditionals: \newcount\X \X=10 \newif\ifGEzero \loop \the\X\endgraf \advance \X by -1 % The spaces after the 0's are important \ifnum\X>0 \GEzerotrue \else \ifnum\X=0 \GEzerotrue \else\GEzerofalse \fi \fi \ifGEzero \repeat \bye I have some numbers output from Matlab and I want to show them as tables in LaTeX. 65. A You should think to \thechapter as the representation of the chapter number in some strange radix: a numeric test like 100>20 would give wrong results if the left hand side is in base two and the right hand side in base 10 and you're doing something similar. Eine umfassende Dokumentation zur Programmierung von LaTeX Klassen und Paketen gibt es leider nicht. 4 ? ! Missing number, treated as zero. Even if you are using only one bracket, both commands are mandatory. I've tried copying lines 545 to 567 into GEdit to get rid of any unwanted invisible characters, and copied it back to TexMaker, but the errors still show up. I provide two possible solutions, although I would note you probably dont want % Digit-character-token "0" of `\ifnum`'s second TeX-<number>-quantity found, thus the process of % gathering tokens that belong to \ifnum's second TeX-<number>-quantity is still in progress and now % forms a process of gathering more digit-character-tokens or something that terminates the % process of gathering, hereby expanding expandable tokens: @tjk8000 Yeah, I really don't see the point of this els-cas thingy, mainly because they use their own typesetting system (definitely not LaTeX), so elsarticle was good enough (and I doubt bugs will be fixed: the development seems to be stalled). <to be read again> v 1. e. In pgfplotsutil. But there are many, many, many other natbib-compatible styles out there (in fact apacite is more the exception than the rule). 0. \documentclass{article} \usepackage{tikz} \usepackage[active,tightpage] LaTeX help chat. From totcount. Under pdfTeX you can perform string comparisons using \pdfstrcmp{<strA>}{<strB>}. Alternatively, you may try using an online LaTeX editor. Thus the space-token An online LaTeX editor that’s easy to use. Ich weiss, dass es sich um einen LaTeX-Counter und ein TeX-Befehl handelt, aber kann ich die beiden irgendwie miteinander verwenden? sowas wie: \documentclass{minimal} \begin{document} \newcounter{X} \setcounter{X}{20} \ifnum\X<10 Counter X ist kleiner 10. While your code can never work for the reasons stated by egreg and David. In this case you can just add the \ifnum stuff to the node contents to make TikZ happy. So powerful, in fact, that it can be used for much more than document markup. – egreg. Modified 8 years, 11 months ago. Tour Start here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site Hi. 01234e-3 and I want to show them in scientific notation. Then LaTeX starts to gather \ifnum's second TeX-⟨number⟩-quantity. No installation, real-time collaboration, version control, hundreds of LaTeX templates, and more. This is easily achieved and can be extended, if needed, for more complicate issues, An online LaTeX editor that’s easy to use. この記事はLaTeXでプログラミングしてみよう（前編）の続きです。まだ読んでいない方は、先に前編を読むことをオススメします。実践さて、前編ではLaTeXでプログラミングするのに必要となる基礎知識 簡単に使用できるオンラインLaTeXエディター。インストール不要、リアルタイムコラボレーション、バージョン管理、何百種類のLaTeXテンプレートなど多数の機能。 Macro \total of package is not expandable, it starts with a definition. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their TeX - LaTeX Meta your communities . Loading Tour Start \ifnum\ifnum\x=1 1\else\ifnum\x=14 1\else0\fi\fi =1 % <do this> \else <do that> \fi Thus you use 'secondary' conditionals to convert the original problem into a simple TRUE/FALSE situation, where the 'outer' \ifnum is simply testing for 0 or 1. LaTeX is Turing complete; that is, it can be programmed to compute just about anything. In the image I attached, you can see part of the longtable I have. Missing = inserted for \ifnum [closed] Ask Question Asked 9 years, 2 months ago. more stack exchange communities TeX - LaTeX help chat. Note that the number of Curios, your OS is a bit newer than mine (I'm on Open SuSe 42. like this: \noexpand{\ifnum1>0}% hello1 \else world1 % next three lines cause trouble (nested ifnum) \MACROB hello2 \fi \fi Now \noexpand "tells" TeX not to expand the subsequent token if that is In order to set entries of a table in math mode, you need array. Add a comment | 3 Answers Sorted by: Reset to default 15 You can not use floating variables. I'd like the proof cases to reorder themselves automatically when I reorder You can use \@ifnextchar{<char>}{<true>}{<false>} to check if the next character (actually next token) is -. To do this I have attempted to use \\pgfmathparse and \\ifnum in order to decide if to colour a As the closing \fi is following directly thereafter the whole thing \ifnum\z@=`}\fi expands to nothing independent on the actually number value. Log in; Sign up; Home. See the explanation there. \else Counter X ist größer oder gleich 10. They always Open this LaTeX fragment in Overleaf. That resolved my problem. pdf in das Thema hinein, hat dann aber nicht zum Anschließen. Commented Nov 8, 2023 at 16:50. As for the patch, the original version treats the whole mark@corau\theauthor as a single number, so it breaks when you As shown by egreg on this thread, using the \ifstrempty command from the etoolbox package, it's possible to test if the given string is empty or not, with the added bonus that linebreaks in the given string won't cause problems. How can I find/write, a macro that is called like \scn{0. So what you want to test is the "abstract" value of the counter: \renewcommand{\chaptermark}[1]{% As shown by egreg on this thread, using the \ifstrempty command from the etoolbox package, it's possible to test if the given string is empty or not, with the added bonus that linebreaks in the given string won't cause problems. 1,147 2 2 gold badges 10 10 silver badges 15 15 bronze badges. Visit Stack Exchange I think all the answers given so far (including mine above) are not expandable which means that you can't to the test in places like a \write or \edef see the \typeout below. \hline ->\noalign {\ifnum 0=`}\fi \hrule \@height \arrayrulewidth \futurelet l. What you can do is using an advanced feature of many text editors called regular expressions to search and replace all numbers in your Frontmatter in a document is typically associated with an Abstract, ToC, LoF, LoT, Preface, etc. Use \totvalue instead, it maps the name to the internal counter register that can be used with \ifnum. am working on overleaf is there any aux fule generated by overleaf? i cant see sorry for stupid question as i am new to latex – user12. 12 \hline My code is this: \documentcl Skip to main content. Features; For business; For universities; For publishers; In general, the plus-minus symbol is generated in LaTeX with the \pm command inside math mode. If #1 is a number, the \ifnum comparison works in the standard way, since the leading 0 does not affect the numerical value. Graphics with TikZ in LaTeX Raw TeX does not have amenities such as compound Boolean operators. 41x10^{-1}$ or $1. My LaTeX document compiled fine on a Springer Nature template and even on another IEEE template. Package imakeidx tests for \directlua and finds it defined, because it uses eTeX's \ifdefined. One other place this is used is in \hline. Jobs \ifnum compares two integers so you must ensure that the numbers are really integers. Interpunktionszeichen [Bearbeiten] Bezeichnung Ausgabe LaTeX-Code Bindestrich (auch Viertelgeviertstrich) - -Halbgeviertstrich – --Geviertstrich — ---Auslassungspunkte \dots: vertikale Auslassungspunkte ⋮ \vdots: Apostroph ’ ' deutsche Anführungszeichen sie sagte „hallo“ sie sagte ,,hallo`` sie @LéoLéopoldHertz준영 -- you must have a package loaded that changes the meaning (to latex) of \&, but since we don't know that that might be, can't guess at an answer. Abhi Abhi. Log in; Sign up; Home In fact, the parameter #1 is not seen as a number by \ifnum. Here is an example using this command in a macro to test if string #1 is empty : \usepackage{etoolbox} \newcommand{\Test}[1]{% Missing = insterted for \ifnum. For this to work there should be a matching \ifnum 0=`{\fi} following in a macro which is called later on in the process. 10 \hline I expect to see \noalign only after the \cr @kammad93 Lots of things. The numbers are in the form 0. \fi \fi \fi Posts about ifnum written by Izaak Neutelings. \fi % Digit-character-token "0" of `\ifnum`'s second TeX-<number>-quantity found, thus the process of % gathering tokens that belong to \ifnum's second TeX-<number>-quantity is still in progress and now % forms a process of gathering more digit-character-tokens or something that terminates the % process of gathering, hereby expanding expandable latex; tikz; pgf; Share. Everything works perfectly - but for some reason, as soon as I include hyperref, everything breaks:Incomplete \ifnum; all Learn latex - Loops - repeating things. Stack Exchange Network. \fi \@arabic I'm trying to use expl3 sequences in order to stored 0, 1 or more affiliations to 1 or more authors stored in a datatool database. In LaTeX the symbol for material implication is produced by $\to$, but for biconditional? symbols; math-operators; logic; Share. I have a little problem here in my LaTeX code, wich only appears when I put a \begin{center} & \end{center}, that gives me this error: Code: Select all . pgfplots uses library fpu for better precision by default, which has a different internal number format. For this to work there should be a matching \ifnum 0=`{\fi} following in a macro Learn how to use conditional statements in LaTeX for dynamic document creation. Basically, I try to parse strings and test their symbols one by one to define whether they are or not numbers (in order to achieve some more complicated treatment, beyond this topic). TeX - LaTeX Meta your communities . The forms <integer \ifnum is a TeX primitive conditional for comparing integers: \ifnum1=1 true \else \ifnum <integer-1><R><integer-2> <tex-code-1> [\else <tex-code-2>] \fi With values: %A TeX primitive counter: \newcount\countA% \countA=5% %A LaTeX counter: \newcounter{counterB}% \setcounter{counterB}{5}% Lorem ipsum \makeatletter% c@<countername> can access the integer value of the counter. more stack exchange communities company blog. since you're not the person who asked this question, please post a new one, with a compilable example that demonstrates the problem. RIP Tutorial. – Skillmon If you change the \lets in the first branch of the \ifnum to \xdef\M{1}\xdef\N{\i}, you can get it to compile. code. These are set as \chapter* or numberless chapters. D. Ein einfach bedienbarer Online-LaTeX-Editor. If a list is missing an element, the `\count` command will return a value that is less than the expected number of elements. Raw TeX does not have amenities such as compound Boolean operators. No installation, real-time collaboration, version control, hundreds of LaTeX {\ifnum 0=`}\fi \hrule \@height \arrayrulewidth \futurelet l. th. Sie möchten Sonderzeichen oder reservierte Zeichen in LaTeX eingeben? Für die gängisten Sonderzeichen lesen Sie unseren Beitrag. \left and \right can dynamically adjust the size, as shown by the next example: Mit LaTeX lassen sich eine Vielzahl mathematischer Zeichen und Symbole einfügen. > latex version of \firstoftwoarguments / \secondoftwoarguments :) > You don't even need that, thanks to Donald's solution somewhere in this thread: \let\then\iffalse Weirdness with `\ifnum`: `\ifnum\curyear=2024` gives an error, but `\ifnum2024=\curyear` works as expected Hot Network Questions If someone falsely claims to have a Ph. tex this happens outside of groups. Just a note, most of the times graphicx is smart enough to detect the correct driver on its own, and you don't have to specify \usepackage[pdftex]{graphicx} but just do \usepackage{graphicx}. Would appreciate any help! (Compiling with Lualatex) I was looking for some hints in the amsmath documentation and found the following trick (adapted, of course): \usepackage{amsmath} \renewcommand{\theequation}{\thechapter--\arabic{equation}} If we look at the original definition of \theequation, we can find that it's more robust than our first attempt: \long macro:->\ifnum \c@chapter >\z@ \thechapter . Then the test: \if 11<>0 11 is not equal 0. You could use the standard natbib styles for starters: \bibliographystyle{plainnat} or \bibliographystyle{unsrtnat}. Häufig wird man bei dem Thema auf das TeXBook verwiesen welches In latex we can use built-in commands to execute code whether the conditions are true or not. It is possible to implement it approximately with a TeX macro using a cleverly chosen parameter text (see one of the following: The TeXbook chapter 20, TexbyTopic 11. sty: %% Returns the numeric total value of a registered Don't load algorithm2e when you're using algpseudocode. Visit Stack Exchange . 14190949656253118000} or \scn{0. <to be read again> A l. There are some ways: Using a \ifdim by-pass (like in the answers by David Carlisle and Heiko Oberdiek) or the expl3 style with \fp_compare:nNnF which checks for the floating point 'entity'. Commented May 9, 2021 at 17:41 @Alex – Your updated code hangs at the very beginning. Wir listen Ihnen alle Befehle dafür auf. To use it, @ must be a letter \ifnum\countA=\c Für jedes Sonderzeichen gibt es einen LaTeX-Befehl, der es erzeugt. Sometimes there are conflicts between some packages but they usually resolve quickly by releasing an update and you might see that there was nothing wrong with your commands. If with condition: \ifthenelse{condition}{A}{B} We have to load LATEX Mathematical Symbols The more unusual symbols are not defined in base LATEX (NFSS) and require \usepackage{amssymb} 1 Greek and Hebrew letters α \alpha κ \kappa ψ \psi z \digamma ∆ \Delta Θ \Theta β \beta λ \lambda ρ \rho ε \varepsilon Γ \Gamma Υ \Upsilon I am trying to produce a 6-by-6 checkboard of small circles, alternating colour between red and black. If that doesn't work, type X <return> to quit. pdf in the end according to my package specifications. 14190949656253118000 or 0. If a number is odd: \ifodd\value{num} {A}\else {B}\fi. I've read it can be done with \ifnum. latex \ifnum\value{d}=0 \PackageError{mypackage}{Missing number d} \fi. 01234e-3} and results in $1. Improve this question. 23x10^{-5}$. . Of course I cannot tell you which are appropriate for submission for your journal. Instead, you must nest your conditionals: \newcount\X \X=10 \newif\ifGEzero \loop \the\X\endgraf \advance \X by -1 % The spaces after the 0's are important \ifnum\X>0 \GEzerotrue \else \ifnum\X=0 \GEzerotrue \else\GEzerofalse \fi \fi \ifGEzero \repeat \bye If \pgfutil@ifundefined (also the same with LaTeX's \@ifundefined) is called, \directlua gets defined with meaning \relax. The above example produces the following output: \[ F = G \left( \frac{m_1 m_2}{r^2} \right) \] Notice that to insert the parentheses or brackets, the \left and \right commands are used. /trabli. ! Missing = inserted for \ifnum. Given your \sqrt example that probably doesn't matter, but the following is a version using expandable tests that is almost certainly the quickest version posted so far, although rather expensive in terms of \if compares two tokens, independently of what they mean. \tikzset{fpu} \pgfmathparse{int(0)}\show\pgfmathresult Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company No installation, real-time collaboration, version control, hundreds of LaTeX templates, and more. Programmieren in TeX / LaTeX. Users. My problem is that in the last column the title and some letters appeared higher or lower than the rest of the text from the longtable. ChapterName in the header is expected since no chapter counter has been incremented. \ else \ifnum\value{score}> 70 Average score. Sign up or log in to customize your list. Follow asked Apr 20, 2010 at 15:17. \documentclass{article} \usepackage{tikz} \begin{document} \begin{tikzpicture} \draw (0,0) rectangle %node{\ifnum0=1\relax My Label\fi} % Works correctly when the value = TeX has the \ifnum conditional (and also \ifcase), but you may be better off using etoolbox's arithmetic tests. That's also why they don't show up in the ToC, since \chapter* doesn't by default (you need to do this manually via \addcontentsline). We can substitute > with < and =. That's nothing to do with latex, just basic arithmetic. LaTeX is a powerful tool. Therefore \pgfresult is not 1 or 0 anymore and \ifnum cannot be used. \ else Needs improvement. – barbara beeton An online LaTeX editor that’s easy to use. Features & Benefits. An online LaTeX editor that’s easy to use. – Nicola Talbot Commented Dec 17, 2013 at 18:28 \MACROA hello1 \else world1 % next three lines cause trouble (nested ifnum) \MACROB hello2 \fi \fi Now \MACROA is expanded and you have s. ) \ifnum can't be used with floating point numbers, i. If #1 is not a number, then the \ifnum argument expansion stops after the 0 with a false comparison (having already printed out #1), and then Misplaced \noalign. \else 11 equals 0. Questions. The following MWE works nicely: \\documentclass{article} \\usepackage{ Missing = inserted for \ifnum. The primitive was introduced in pdfTEX 1. @Pureferret Use text within \text{} That's what it's for: escaping math mode. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. To demonstrate the general-purpose programming abilities of LaTeX, we’ll look at an example that calculates the first Fibonacci numbers. The former creates an algorithm floating environment, but in order to use algorithmic from algpseudocode, you should load algorithm instead (from the algorithms bundle). If you need math symbols within again, write \text{word $\symbol$} or even better, end the macro argument, such as \text{word } \symbol \text{ and more text}. Here is an example using this command in a macro to test if string #1 is empty : \usepackage{etoolbox} \newcommand{\Test}[1]{% Applying a macro to all numbers in a document globally is so far I know not possible. For example, the previous equation was produced with: % Plus minus symbol in LaTeX \[ x^2+bx+c=0 \implies x=\frac{-b \pm \sqrt{b^2 Solution: If you are using a local LaTeX IDE/Studio, I recommend updating the packages you are using. @user1850133 I added the integer comparison. Tags; Topics; Examples; eBooks; Download latex (PDF) latex. Thank you so much. (This works as TeX keeps expanding until it finds a number when considering the outer \ifnum. Use values as percentage: \documentclass[pstricks,border=4pt]{standalone} \usepackage I want to check if a variable is less than 0 in a tikzpicture environment. on the jacket of a book and they profit from that claim, is that criminal fraud? As the closing \fi is following directly thereafter the whole thing \ifnum\z@=`}\fi expands to nothing independent on the actually number value. Oddly, this conference template is where these odd errors show up. There are, however, cases in which TikZ expects some explicit character, or so. 46 \DeclareUnicodeCharacter{00A4}{\textcurrency} I was expecting I need something similar to \ifnum \j mod 2 = 0 rest of a number, but do not know how to do this in line 22. 10 \hline I expect to see \noalign only after the \cr Read \if_integer_number#1=another_integer_ and not floating point numbers. So a working code, combining the previous answers could be: \documentclass[11pt] See the LaTeX manual or LaTeX Companion for explanation. This code executes A if num>n else B. Stack Exchange network A way out is to tell LaTeX to set every column in Stack Exchange Network. Share. LaTeX Templates Articles, Essays, and Journal Templates Theses, Books, Title pages Letters Presentations and Posters Curricula Vitae / Résumés Assignments, Laboratory books and reports Calendars and Miscellaneous; LaTeX Community Announcements Community talk Comments & Wishes New Members; LaTeX Books LaTeX Beginner's Guide LaTeX Hi. \documentclass{article} \usepackage{algorithm} \usepackage[noend]{algpseudocode} \begin{document} \begin{algorithm} Unfortunately TeX doesn't support \ifnum with <= and >= at primitive level because the author of TeX expected that programmers are able to use the negation, if it is needed. My code, simplified, is \begin{center} \begin{animateinline}[loop, poster = first, \ifnum\dimexpr\relax<\dimexpr\relax works because scaling dimensions preserves the order. Here is a problem that has been puzzling me for a few days. Below are my files and the results I get. – David Carlisle. From the pdfTeX user manual: \pdfstrcmp{<general text>}{<general text>} (expandable) This command compares two strings and expands to 0 if the strings are equal, to -1 if the first string ranks before the second, and to 1 otherwise. Follow edited Aug 20, 2013 at 20:32. If num is odd then it executes A else B. However, neither slashbox nor diagbox (more recent and maintained) apparently can be used in array. 30. はじめにこの記事は群馬高専 Advent Calendar 2024 13日目の記事です。普段私がレポートや課題などでLaTeXを書く際に、とりあえずでまとめたテンプレートを紹介します。「この書 Generally you can use \ifnum etc. If you do, then you can add \global\let\M\M\global\let\N\N to the end of the 2nd branch of the \ifnum. So, printing of 0. Explore if-then-else structures, boolean expressions, and practical {score}{85} \ifnum\value{score}> 90 Excellent score! \ else \ifnum\value{score}> 80 Good score. Getting started with latex; Accessing documentation of LaTeX packages; Add Citation; \ifnum \value{int}<10 \repeat This code does I have a definition with 20 cases or so, and a proof about that definition has one case for each case of the definition. The test \if 1<>0 compares 1 and < and yields false, thus you see 1 equals 0. Viewed 39k times {introduction} % includes latex files from the same directory \include{packages} % could be called Methodology or methods or anyfile name \include{structure} % could be results \include No installation, real-time collaboration, version control, hundreds of LaTeX templates, and more. Tags. Skip to content. Type H <return> for immediate help Try typing <return> to proceed. Here is an \ifnum comparison that can handle non-numeric inputs. 9k 37 37 gold badges 93 93 silver badges 300 300 bronze badges. Mensch. it is meant for integer values only. I would also recommend to not use some \if TT\fi trickery but use a if-macro which accepts the true and false branches as arguments. I appear to be able to return through the messages and I get a properly formatted . For the sake of the example, if you had, \if 11<>0 then the test would be true because TeX would compare 1 and the next 1 and would return true. Hereby the space-character behind the 1 also is tokenized as an explicit space-token. \ifnum only accept one test: \ifnum 1<\thepage<33 will just test if 1<\thepage and consider <33 The \ifnum command denotes the start of an if-then-else control structure. tex:38: LaTeX Error: Something's wrong--perhaps a missing \item. It does it by comparing 1 with 0#1. 4 ? Not sure what this means exactly. 1), but your pstricks package appears to be far older than mine Ok, I never cared about the TeX bundle available through the Linux-distri, rather, I installed TeX Live directly. Thank you for your help. vqibzeqbl bmqjy hvk zfrqiu egejh bbfyu wjp ysg yarht daqa