Too much space between `figure`-`tikzpicture` and `caption`

Question

Too much space between figure-tikzpicture and caption. Also, \centering doesn't seem to be working properly, as it places the figure far to the left.

It's as if the tikz drawing is larger than it actually shows, having white space both to the left and below.

The expected result is to maintain a normal center and without extra space that breaks with the aesthetics of the document, something like:

Is there something I'm missing to make this happen? Can I put a frame on the figure and/or the tikz picture to see the space they occupy?

The code I'm trying to implement is as follows:

\documentclass{article}
\usepackage{tikz}
\begin{document}
La variable de tipo puntero se utilizan para almacenar en ellas la dirección de memoria de otra variable. El puntero, como variable que es tiene asociado su dirección de memoria y su contenido será la dirección de memoria de otra variable (véase figura \ref{puntero}).
\begin{figure}[h]
    \centering
    \begin{tikzpicture}
        \draw[-] (0,0) -- (7.5,0) 
            node at (1.5,0.5) {DIR MEM} 
            node at (4,0.5) {VAR}
            node at (6,0.5) {VALOR};
        \draw[-] (3,0) -- (3,-1.9) 
            node at (1.5,-0.5) {0xFFFFFFF0} 
            node at (4,-0.5) {\textit{num1}} 
            node at (6,-0.5) {5} 
            node at (1.5,-1) {0xFFFFFFF1}
            node at (4,-1) {\textit{punt}} 
            node at (6.3,-1) {0xFFFFFFF0} 
            node at (1.5,-1.5) {0xFFFFFFF2};
        \draw[-stealth,gray] (6.3,-1.3) to[out=300, in=180] (0.2,-0.5);
    \end{tikzpicture}
    \caption{Ejemplo de puntero \textit{punt} que referenciua a la dirección de memoria 0xFFFFFFF0 que es, a su vez, la variable entera \textit{num1} que almacena el valor 5.}
    \label{puntero}
\end{figure}
Los punteros pueden apuntar a variables previamente declaradas o a variables dinámicas.La potencia de los punteros reside en poder crear (reservar memoria) y destruir (liberar memoria) una variable (dinámica) en tiempo de ejecución.
\end{document}

Bienvenido a TeX.SE!!!. You probably need \useasboundingbox (TikZ manual v3.19a, p.172,184), but it's difficult to say without a MWE. See: https://tex.meta.stackexchange.com/questions/228/ive-just-been-asked-to-write-a-minimal-working-example-mwe-what-is-that — Juan Castaño, Nov 11 '22 at 10:38
If you use the overlay option, the tikz picture won't influence the spacing. Please add a minimal working example which shows the code you use. — samcarter_is_at_topanswers.xyz, Nov 11 '22 at 11:06
Added code block, I don't understand how I could have forgotten it, sorry! — Fco Javier Balón, Nov 12 '22 at 22:29
@FcoJavierBalón Try with \draw[-stealth,gray,overlay] (6.3,-1.3) to[out=300, in=180] (0.2,-0.5); — samcarter_is_at_topanswers.xyz, Nov 12 '22 at 22:32
And please don't post code fragments. Always make a compilable minimal working example. Things like guessing the necessary packages etc. get boring very fast ... — samcarter_is_at_topanswers.xyz, Nov 13 '22 at 09:13

score 1 · Accepted Answer · answered Nov 13 '22 at 16:06

You can use the overlay option to make sure that your arrow does not influence the size of the picture:

\documentclass{article}
\usepackage{tikz}
\begin{document}
La variable de tipo puntero se utilizan para almacenar en ellas la dirección de memoria de otra variable. El puntero, como variable que es tiene asociado su dirección de memoria y su contenido será la dirección de memoria de otra variable (véase figura \ref{puntero}).
\begin{figure}[h]
    \centering
    \begin{tikzpicture}
        \draw[-] (0,0) -- (7.5,0) 
            node at (1.5,0.5) {DIR MEM} 
            node at (4,0.5) {VAR}
            node at (6,0.5) {VALOR};
        \draw[-] (3,0) -- (3,-1.9) 
            node at (1.5,-0.5) {0xFFFFFFF0} 
            node at (4,-0.5) {\textit{num1}} 
            node at (6,-0.5) {5} 
            node at (1.5,-1) {0xFFFFFFF1}
            node at (4,-1) {\textit{punt}} 
            node at (6.3,-1) {0xFFFFFFF0} 
            node at (1.5,-1.5) {0xFFFFFFF2};
        \draw[-stealth,gray,overlay] (6.3,-1.3) to[out=300, in=180] (0.2,-0.5);
    \end{tikzpicture}
    \caption{Ejemplo de puntero \textit{punt} que referenciua a la dirección de memoria 0xFFFFFFF0 que es, a su vez, la variable entera \textit{num1} que almacena el valor 5.}
    \label{puntero}
\end{figure}
Los punteros pueden apuntar a variables previamente declaradas o a variables dinámicas.La potencia de los punteros reside en poder crear (reservar memoria) y destruir (liberar memoria) una variable (dinámica) en tiempo de ejecución.
\end{document}

Too much space between `figure`-`tikzpicture` and `caption`

1 Answers1