I am using Latex for my dissertation. Since my document is rather long I have multiple copies of some equations so that the reader is not required to flip back and forth to stay in the flow of each chapter. A couple questions:
1. Is there a away to (re)insert a figure, or equation that already exists in the document based on its label?
2. Is there a way to insert an equation/figure yet have it referenced back to the original? I.E. if I put an equation in chapter 4 that also existed in chapter 1, can i have it list the reference the equation number for chapter 1? (1.7 instead of 4.2 for example)
Thanks!
Graphics, Figures & Tables ⇒ Multiple copies of the same figure, equation etc.
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Multiple copies of the same figure, equation etc.
I don't think there is a simple way to reuse an equation or a figure. You can of course define a macro which gives the content of the equation/figure, so that you don't have to copy/paste if you change it.
To reuse an equation number, you can use the \tag feature to manually set the tag of the reused equation. To set a figure number, I think you have to manually tinker with the involved counters. Does the following example do what you want?
To reuse an equation number, you can use the \tag feature to manually set the tag of the reused equation. To set a figure number, I think you have to manually tinker with the involved counters. Does the following example do what you want?
Code: Select all
\documentclass{book}
\usepackage{amsmath}
\begin{document}
\chapter{First}
\begin{equation}
\label{eq:1}
A = B
\end{equation}
\begin{figure}
\centering
\rule{2cm}{2cm}
\caption{Figure 1}
\label{fig:1}
\end{figure}
\chapter{Second}
\begin{equation}
\tag{\ref{eq:1}}
A = B
\end{equation}
\begin{figure}
\centering
\rule{2cm}{2cm}
\caption{Figure 2}
\label{fig:2}
\end{figure}
\begin{figure}
\addtocounter{figure}{-1}
\renewcommand\thefigure{\ref{fig:1}}
\centering
\rule{2cm}{2cm}
\caption{Figure 1 again}
\end{figure}
\begin{figure}
\centering
\rule{2cm}{2cm}
\caption{Figure 3}
\label{fig:3}
\end{figure}
\begin{figure}
\centering
\rule{2cm}{2cm}
\caption{Figure 4}
\label{fig:4}
\end{figure}
Three figures: \ref{fig:1} \ref{fig:2} \ref{fig:3}
\end{document}
Re: Multiple copies of the same figure, equation etc.
Yes, thank you!