captionsdiagramsfloats
I have to include some images to illustrate a problem. So I used the following code to auto-scale them to text-witdh, which works amazing. But how can I add some caption? (I have to label and number all figures)?
I found some solutions with google (caption etc.) but AFAIK they need a figure-object. So I also tried to use it instead of this box, but then I was not able to auto-fit the image.
\begin{center}
\makebox[\textwidth]{\includegraphics[width=\textwidth]{pstack}}
\end{center}
I don't think that it would be possible to do this easily using the current set of tools (gnuplot and epslatex). The reason is that depending on the dimensions and font size of the final LaTeX document, you would need to calculate manually the dimensions and the font size of the figures.
What you require can be easily accomplished using pgfplots, which is a LaTeX package so that all the code for drawing graphics can be included into your .tex file. See example below where the figure naturally fills up the column width of the document and uses the same font size.
The process which I use to generate graphs is the following:
pgfplots to write LaTeX code in main .tex file to plot graphSee the section "Reading coordinates from tables" of the pgfplots manual for more information.
\documentclass[5p]{elsarticle}
\usepackage{lipsum}
\usepackage{pgfplots}
\begin{document}
\begin{figure}[h!]
\centering
\begin{tikzpicture}
\begin{axis}[
width=\columnwidth,
xlabel=$x$,
ylabel=$y$,
legend pos=north west]
\addplot {x^3};
\addlegendentry{$y = x^3$};
\end{axis}
\end{tikzpicture}
\end{figure}
\lipsum[1-2]
\end{document}
\documentclass[3p]{elsarticle}
\usepackage{lipsum}
\usepackage{pgfplots}
\begin{document}
\begin{figure}[h!]
\centering
\begin{tikzpicture}
\begin{axis}[
width=\columnwidth,
xlabel=$x$,
ylabel=$y$,
legend pos=north west]
\addplot {x^3};
\addlegendentry{$y = x^3$};
\end{axis}
\end{tikzpicture}
\end{figure}
\lipsum[1-2]
\end{document}
Slightly adopted @egreg answer in given link (that now you have two figures and not sub-figures):
\documentclass{article}
\usepackage{graphicx}
\usepackage{subcaption}% added for test in parallel with @egreg solution
\usepackage{showframe}% only for show page layout. in real use it had to be omitted!
% new lengths and save boxes
\newlength{\twosubht}
\newsavebox{\twosubbox}
\newlength{\firstfig}
\newsavebox{\firstfigbox}
\newlength{\secondfig}
\newsavebox{\secondfigbox}
\begin{document}
\begin{figure}[htp]
% measurement of height
\sbox\twosubbox{\resizebox{\dimexpr.9\textwidth-1em}{!}{%
\includegraphics[height=3cm]{example-image-a}%
\includegraphics[height=3cm]{example-image-16x9}%
}%
}
\setlength{\twosubht}{\ht\twosubbox}
% measurement of width
\sbox\firstfigbox{\includegraphics[height=\twosubht]{example-image-a}}%
\setlength{\firstfig}{\wd\firstfigbox}
\sbox\secondfigbox{\includegraphics[height=\twosubht]{example-image-16x9}}%
\setlength{\secondfig}{\wd\secondfigbox}
% figure
\centering
\begin{tabular}{p{\firstfig}p{\secondfig}}
\usebox\firstfigbox
\caption{The first}
& \usebox\secondfigbox
\caption{The second}
\end{tabular}
\end{figure}
% original @egreg solution
\noindent\hrulefill The text width\hrulefill
\begin{center}
\makebox[.9\textwidth]{\hrulefill 90\% of text width\hrulefill}
\end{center}
\begin{figure}[htp]
% preliminary
\sbox\twosubbox{%
\resizebox{\dimexpr.9\textwidth-1em}{!}{%
\includegraphics[height=3cm]{example-image-a}%
\includegraphics[height=3cm]{example-image-16x9}%
}%
}
\setlength{\twosubht}{\ht\twosubbox}
% typeset
\centering
\subcaptionbox{First\label{f}}{%
\includegraphics[height=\twosubht]{example-image-a}%
}\quad
\subcaptionbox{Second\label{s}}{%
\includegraphics[height=\twosubht]{example-image-16x9}%
}
\caption{The caption}
\end{figure}
\end{document}
First compiling is slow due to figure size adjustment and figure size measurements.
Edit: For comparison the size of the figures, I copy @egreg solution from given link into my answer. As expected, the size of figures are the same (this is response to comment, that figures are not the same ...).
I also recommended to use geometry package for determining page layout (no used in above MWE).
Best Answer
or
You do not need the
\makeboxif your images are of the same width.