Creating tikz picture | Problem with arrows and labels

Question

I am pretty new on TikZ and I want to create a diagram for my measure class. I created the following picture:

\documentclass{standalone}
\usepackage{float}
\usepackage{amsfonts}
\usepackage{mathrsfs}
\usepackage{tikz}
\begin{document}
   \begin{tikzpicture}[scale=1.5]
        %Mis espacios
        \node (A) at (0,3) {$(\Omega, \mathscr{F},\mu)$};
        \node (B) at (3,3) {$(\Omega',\mathscr{F}')$};
        \node (C) at (3,0) {$(\mathbb{R}^1,\mathscr{R}^{1})$};
        %Los mapas
        \draw [thick,->] (A) to  node[midway,above] {$T$} (B);
        \draw [thick,->] (B) to node[midway,right] {$f$} (C);
        \draw [dashed,thick,->] (A) to node[midway,above left, yshift=-13 pt] {$T \circ f$} (C);
    \end{tikzpicture}
\end{document}

However I am having problems with the executions of the code since the label of compositions appears over the arrow and the arrow tips do not appear.

The following code includes all the packages I have originally in case some package is not compatible with my picture.

%Colores
\usepackage{xcolor}
%Evita problemas con tildes y caracteres especiales
\usepackage[utf8]{inputenc}
%Secciones con formato
\usepackage{sectsty}
%Formato del Documento
\usepackage[left=2.5cm,top=2.5cm,right=2.5cm,bottom=2.5cm]{geometry}
%Formato de entornos de enunciados matemáticos
\usepackage{amsthm}
%amsmath + más simbolos utiles
\usepackage{mathtools}
%Cosas en Español
\usepackage[spanish]{babel}
%Hipervínculos
\usepackage{hyperref}
%Letras de conjuntos notables
\usepackage{dsfont}
%Más simbolos matemáticos útiles
\usepackage{amssymb}
%Inclusión de imágenes
\usepackage{graphicx}
%Hipervínculos
\usepackage{hyperref}
%Comentarios largos
\usepackage{comment}
%Citas y Referencias
\usepackage{apacite}
%Editando las etiquetas de las numeraciones
\usepackage{enumitem}
%Caritas
\usepackage{wasysym}
%Interlineado
\usepackage{setspace}
%tablas acomodadas 
\usepackage{float}
%Rotar en Tabla 
\usepackage{multirow}
%Encabezado y pie de página
\usepackage{fancyhdr}
%cancelaciones
\usepackage{cancel}
%Letras caligraficamente perfectas
\usepackage{mathrsfs}
%Graficas poderosa
\usepackage{tikz}

Also, I would like to include the error that appears on my original document:

Argument of \language@active@arg> has an extra }.
Runaway argument?
Missing \endcsname inserted.

Welcome. // Probably related to the scale. See the Petri net tutorial in the manual. Close to the end it shows how to retract the ends a little. // try als yshift=-12 pt or so to lower the diagonal text, apply inside [ ... ]. // BTW, your code can‘t compile once we copied it … — MS-SPO, Apr 29 '23 at 16:25
Thanks! I updated my code. I notice the in this ocassion the arrows tips appear. However in my original document they dont. About scale, what's your suggestion? — Topology G, Apr 29 '23 at 16:36
About the packages, please post as a new question. The approach here is: (a) one Question = one problem, (b) each Answer = one solution. // In turn, posting more than one question within the same Question at a time most of the time is no good idea here ;-) — MS-SPO, Apr 29 '23 at 17:12
Welcome to TeX.SE!! Your code works fine in my machine. However, you probably need the babel TikZ library in your complete document. Add in your preamble \usetikzlibrary{babel} to fix some issues that appear when using TikZ and babel at the same time. — Juan Castaño, Apr 29 '23 at 17:16
Hi @MS-SPO I included to packages since sometimes they create contradiction on the code. For instance, as you may see, there was a problem with babel package and we need to fix it including the library. — Topology G, Apr 30 '23 at 03:10

score 1 · Answer 1 · answered Apr 29 '23 at 17:10

Please find attached a few choices you have. You may want to look them up in the pgfmanual, e.g. via index, find etc. I indicated changes in the code, both by \section and some visual comment. Option transform shape together with scale was probably the one you were missing.

% https://tex.stackexchange.com/questions/684274/creating-tikz-picture-problem-with-arrows-and-labels?noredirect=1#comment1697768_684274
%\documentclass{standalone}
\documentclass[10pt]{article}
%\usepackage{float}% <<<--- not needed here
\usepackage{amsfonts}
\usepackage{mathrsfs}
\usepackage{tikz}
\begin{document}
\section{as posted}
   \begin{tikzpicture}[scale=1.5]
        %Mis espacios
        \node (A) at (0,3) {$(\Omega, \mathscr{F},\mu)$};
        \node (B) at (3,3) {$(\Omega',\mathscr{F}')$};
        \node (C) at (3,0) {$(\mathbb{R}^1,\mathscr{R}^{1})$};
        %Los mapas
        \draw [thick,->] (A) to  node[midway,above] {$T$} (B);
        \draw [thick,->] (B) to node[midway,right] {$f$} (C);
        \draw [dashed,thick,->] (A) to node[midway,above left] {$T \circ f$} (C);
    \end{tikzpicture}
\section{changed scale}

    \begin{tikzpicture}[scale=1.0]% <<<---
        %Mis espacios
        \node (A) at (0,3) {$(\Omega, \mathscr{F},\mu)$};
        \node (B) at (3,3) {$(\Omega',\mathscr{F}')$};
        \node (C) at (3,0) {$(\mathbb{R}^1,\mathscr{R}^{1})$};
        %Los mapas
        \draw [thick,->] (A) to  node[midway,above] {$T$} (B);
        \draw [thick,->] (B) to node[midway,right] {$f$} (C);
        \draw [dashed,thick,->] (A) to node[midway,above left] {$T \circ f$} (C);
    \end{tikzpicture}
\section{with shorten}
   \begin{tikzpicture}[scale=1.5]
        %Mis espacios
        \node (A) at (0,3) {$(\Omega, \mathscr{F},\mu)$};
        \node (B) at (3,3) {$(\Omega',\mathscr{F}')$};
        \node (C) at (3,0) {$(\mathbb{R}^1,\mathscr{R}^{1})$};
        %Los mapas
        % <<<--- -----------|
        \draw [thick,->,shorten >=10pt] (A) to  node[midway,above] {$T$} (B);
        \draw [thick,->,shorten >=10pt] (B) to node[midway,right] {$f$} (C);
        \draw [dashed,thick,->,shorten >=10pt] (A) to node[midway,above left] {$T \circ f$} (C);
    \end{tikzpicture}
\section{with transform shape}
   \begin{tikzpicture}[scale=1.5, transform shape]% <<<---
        %Mis espacios
        \node (A) at (0,3) {$(\Omega, \mathscr{F},\mu)$};
        \node (B) at (3,3) {$(\Omega',\mathscr{F}')$};
        \node (C) at (3,0) {$(\mathbb{R}^1,\mathscr{R}^{1})$};
        %Los mapas
        \draw [thick,->] (A) to  node[midway,above] {$T$} (B);
        \draw [thick,->] (B) to node[midway,right] {$f$} (C);
        \draw [dashed,thick,->] (A) to node[midway,above left] {$T \circ f$} (C);
    \end{tikzpicture}
\section{with transform shape and shifted text}
   \begin{tikzpicture}[scale=1.5, transform shape]% <<<---
        %Mis espacios
        \node (A) at (0,3) {$(\Omega, \mathscr{F},\mu)$};
        \node (B) at (3,3) {$(\Omega',\mathscr{F}')$};
        \node (C) at (3,0) {$(\mathbb{R}^1,\mathscr{R}^{1})$};
        %Los mapas
        \draw [thick,->] (A) to  node[midway,above] {$T$} (B);
        \draw [thick,->] (B) to node[midway,right] {$f$} (C);
        % <<<--- ------------------------------------------------|
        \draw [dashed,thick,->] (A) to node[midway,above left,yshift=-1.5em] {$T \circ f$} (C);
    \end{tikzpicture}
\end{document}

Thanks for your time, I really apprecciate.
The problem was babel jajajja — Topology G, Apr 30 '23 at 03:10
Fine, no problem. However, that's why code posted should show the problem after compile ;-) — MS-SPO, Apr 30 '23 at 08:06
That totally true! I see now the intention of other comment on the question. Thanlks for help :) — Topology G, Apr 30 '23 at 18:00

score 1 · Answer 2 · answered Apr 29 '23 at 18:22

I found that the language pack interferes with the use of the > character in the arrows so you can try using another type of definition as offered by normal tikz or you can use the meta arrows that is in the example case. I recommend you see the tikz visual manual pages 21 and 56.

RESULT:

MWE:

\documentclass[tikz]{standalone}
\usepackage[utf8]{inputenc}
\usepackage{amsthm}
\usepackage{mathtools}
\usepackage[spanish]{babel} %<---Here this throws an error using the ">" symbol for arrows, try using arrows.meta
\usepackage{mathrsfs}
\usepackage{float}
\usepackage{amsfonts}
\usepackage{mathrsfs}
\usetikzlibrary{arrows.meta} %<--- 
\begin{document}
\begin{tikzpicture}[]
        %Mis espacios
        \node (A) at (0,3) {$(\Omega, \mathscr{F},\mu)$};
        \node (B) at (3,3) {$(\Omega',\mathscr{F}')$};
        \node (C) at (3,0) {$(\mathbb{R}^1,\mathscr{R}^{1})$};
        %Los mapas
         \draw [thick,-Classical TikZ Rightarrow] (A) to  node[midway,above] {$T$} (B);
        \draw [thick,-To] (B) to node[midway,right] {$f$} (C);
        \draw [dashed,thick,-Triangle] (A) to node[midway,sloped,above] {$T \circ f$} (C);
    \end{tikzpicture}
\end{document}

By the way, I did not find any other incompatibility with the other packages that you list, which of course are required for your main document, in the standalone tikz environment it could be declared at the beginning and tikz itself invokes others like xcolor, certainly if it is a The final image should be managed in your main document as if it were a normal image, only that you must import it in pdf format, so you can scale it, rotate it, even nest it, you can see that in the following post from a long time ago: Scaling different components of tikzpicture together

Hey! I looked up the manual. It opens up my mind. I see we have many options for arrow tips. Thanks for your help it is really appreciated. — Topology G, May 01 '23 at 18:54

score 0 · Answer 3 · answered Apr 29 '23 at 19:10

0

Using tikz-cd package.

\documentclass[a4paper,12pt]{article}
\usepackage{amsmath,amssymb}
\usepackage{tikz-cd}
\usepackage{mathrsfs}
\begin{document}
\begin{tikzcd}[row sep =1.5cm]
{(\Omega, \mathscr{F},\mu)} \arrow[rd, "T\circ f"{sloped}, dashed] \arrow[r, "T"] & {(\Omega',\mathscr{F}')} \arrow[d, "f"] \
& {(\mathbb{R}^1,\mathscr{R}^{1})}

\end{tikzcd}
\end{document}

answered Apr 29 '23 at 19:10

Sebastiano

54,118

1

It looks that the perfect tool for diagrams. It's shorter to create the diagram. I think will be usefull for future diagrams. – Topology G Apr 30 '23 at 18:02

Creating tikz picture | Problem with arrows and labels

3 Answers3