[Tex/LaTex] How to maintain the size of epslatex figures after embedding into a LaTeX documnet

Question

I use the following commands to plot a figure in epslatex.

set terminal epslatex size 3.0in,2.25in font ',8'
set output 'filename.tex'

The epslatex terminal produces two files: filename.tex and filename.eps. As discussed in Gnuplot epslatex terminal not showing axis text, I embed this tex file filename.tex into a latex document by:

\documentclass[conference]{IEEEtran}

\begin{figure}[!t]
\centering
        \includegraphics{filename}
        \caption{simulation result}
        \label{f_sim}
\end{figure}

However, the figure size is much larger than 3.0in,2.25in. How can I keep the figure size unchanged?

Answer 1

Please do always give full but minimal scripts and documents. The snippets you give aren't compileable. It are quite often those parts which aren't posted which make the problems.

Here a short example, which works fine:

A gnuplot script filename.gp:

set terminal epslatex size 3.0in,2.25in font ',8'
set output 'filename.tex'
plot x

And a document main.tex with the content

\documentclass[conference]{IEEEtran}
\usepackage{graphicx}
\begin{document}
\begin{figure}
    \centering
    \input{filename}
    \caption{simulation result}
\end{figure}
\end{document}

Now run

gnuplot filename.gp
pdflatex main.tex

to get a document with a correctly sized image.