通常我使用 \def\svgwidth 命令来缩放 latex + pdf 图片的字体大小，效果非常好。
\begin{figure}[htbp]
\begin{center}
\def\svgwidth{1in}
\resizebox{!}{.7\textwidth}{\input{test.tex}}
\caption{aaa.}
\label{fig:aaa}
\end{center}
\end{figure}
但是对于附加的 pdf+tex 文件， \def\svgwidth 根本不起作用。
改变 svgwidth 后字体大小保持不变。使用 gnuplot 制作的 pdf 大小选择为 32x24cm。
对此有什么建议吗？
% GNUPLOT: LaTeX picture with Postscript
\begingroup
\makeatletter
\providecommand\color[2][]{%
\GenericError{(gnuplot) \space\space\space\@spaces}{%
Package color not loaded in conjunction with
terminal option `colourtext'%
}{See the gnuplot documentation for explanation.%
}{Either use 'blacktext' in gnuplot or load the package
color.sty in LaTeX.}%
\renewcommand\color[2][]{}%
}%
\providecommand\includegraphics[2][]{%
\GenericError{(gnuplot) \space\space\space\@spaces}{%
Package graphicx or graphics not loaded%
}{See the gnuplot documentation for explanation.%
}{The gnuplot epslatex terminal needs graphicx.sty or graphics.sty.}%
\renewcommand\includegraphics[2][]{}%
}%
\providecommand\rotatebox[2]{#2}%
\@ifundefined{ifGPcolor}{%
\newif\ifGPcolor
\GPcolortrue
}{}%
\@ifundefined{ifGPblacktext}{%
\newif\ifGPblacktext
\GPblacktexttrue
}{}%
% define a \g@addto@macro without @ in the name:
\let\gplgaddtomacro\g@addto@macro
% define empty templates for all commands taking text:
\gdef\gplbacktext{}%
\gdef\gplfronttext{}%
\makeatother
\ifGPblacktext
% no textcolor at all
\def\colorrgb#1{}%
\def\colorgray#1{}%
\else
% gray or color?
\ifGPcolor
\def\colorrgb#1{\color[rgb]{#1}}%
\def\colorgray#1{\color[gray]{#1}}%
\expandafter\def\csname LTw\endcsname{\color{white}}%
\expandafter\def\csname LTb\endcsname{\color{black}}%
\expandafter\def\csname LTa\endcsname{\color{black}}%
\expandafter\def\csname LT0\endcsname{\color[rgb]{1,0,0}}%
\expandafter\def\csname LT1\endcsname{\color[rgb]{0,1,0}}%
\expandafter\def\csname LT2\endcsname{\color[rgb]{0,0,1}}%
\expandafter\def\csname LT3\endcsname{\color[rgb]{1,0,1}}%
\expandafter\def\csname LT4\endcsname{\color[rgb]{0,1,1}}%
\expandafter\def\csname LT5\endcsname{\color[rgb]{1,1,0}}%
\expandafter\def\csname LT6\endcsname{\color[rgb]{0,0,0}}%
\expandafter\def\csname LT7\endcsname{\color[rgb]{1,0.3,0}}%
\expandafter\def\csname LT8\endcsname{\color[rgb]{0.5,0.5,0.5}}%
\else
% gray
\def\colorrgb#1{\color{black}}%
\def\colorgray#1{\color[gray]{#1}}%
\expandafter\def\csname LTw\endcsname{\color{white}}%
\expandafter\def\csname LTb\endcsname{\color{black}}%
\expandafter\def\csname LTa\endcsname{\color{black}}%
\expandafter\def\csname LT0\endcsname{\color{black}}%
\expandafter\def\csname LT1\endcsname{\color{black}}%
\expandafter\def\csname LT2\endcsname{\color{black}}%
\expandafter\def\csname LT3\endcsname{\color{black}}%
\expandafter\def\csname LT4\endcsname{\color{black}}%
\expandafter\def\csname LT5\endcsname{\color{black}}%
\expandafter\def\csname LT6\endcsname{\color{black}}%
\expandafter\def\csname LT7\endcsname{\color{black}}%
\expandafter\def\csname LT8\endcsname{\color{black}}%
\fi
\fi
\setlength{\unitlength}{0.0500bp}%
\ifx\gptboxheight\undefined%
\newlength{\gptboxheight}%
\newlength{\gptboxwidth}%
\newsavebox{\gptboxtext}%
\fi%
\setlength{\fboxrule}{0.5pt}%
\setlength{\fboxsep}{1pt}%
\begin{picture}(18140.00,13600.00)%
\gplgaddtomacro\gplbacktext{%
\csname LTb\endcsname%
\put(459,372){\makebox(0,0)[r]{\strut{}$-10$}}%
\csname LTb\endcsname%
\put(459,3628){\makebox(0,0)[r]{\strut{}$-5$}}%
\csname LTb\endcsname%
\put(459,6884){\makebox(0,0)[r]{\strut{}$0$}}%
\csname LTb\endcsname%
\put(459,10139){\makebox(0,0)[r]{\strut{}$5$}}%
\csname LTb\endcsname%
\put(459,13395){\makebox(0,0)[r]{\strut{}$10$}}%
\csname LTb\endcsname%
\put(561,186){\makebox(0,0){\strut{}$-10$}}%
\csname LTb\endcsname%
\put(4879,186){\makebox(0,0){\strut{}$-5$}}%
\csname LTb\endcsname%
\put(9197,186){\makebox(0,0){\strut{}$0$}}%
\csname LTb\endcsname%
\put(13515,186){\makebox(0,0){\strut{}$5$}}%
\csname LTb\endcsname%
\put(17833,186){\makebox(0,0){\strut{}$10$}}%
}%
\gplgaddtomacro\gplfronttext{%
\csname LTb\endcsname%
\put(8384,9426){\makebox(0,0)[r]{\strut{}abc}}%
}%
\gplbacktext
\put(0,0){\includegraphics{test}}%
\gplfronttext
\end{picture}%
\endgroup