我使用以下代码构建了 2 个图
\usepackage{pgfplots}
\usepackage{pgfplotstable}%fitting functions
\usepackage{tikz}
\usetikzlibrary{tikzmark}
\usepackage{pgfplotstable}
\usepackage{siunitx}
\pgfkeys{/pgf/number format/.cd,1000 sep={}}
\newcommand{\myfont}{\fontfamily{cmss}\selectfont}% used with mathpazo
\pgfdeclareplotmark{fat-}
{%
\pgfsetlinewidth{1}
\pgfpathmoveto{\pgfqpoint{\pgfplotmarksize}{0pt}}%
\pgfpathlineto{\pgfqpoint{-\pgfplotmarksize}{0pt}}%
\pgfusepathqstroke
}%
\pgfplotsset{/pgfplots/error bars/error bar style={very thick,blue,mark size=2.5},/pgfplots/error bars/error mark={fat-}}
%\pgfplotsset{/pgfplots/label shift={0pt}}
\pgfplotsset{compat=1.15}
\pgfplotsset{label style={font=\Large},
tick label style={font=\Large}}
\pgfplotsset{error bars/.cd,
x dir=both, x explicit,
y dir=both, y explicit,
}
\begin{document}
\begin{figure}
\centering
\begin{tikzpicture}[trim axis left]
\begin{axis}[
enable tick line clipping=false, % makes all ticks same width
axis line style=thick,
axis on top=true,
width=9cm,
height=4cm,
axis x line=bottom,
x axis line style=-,
axis y line=none,
legend style={at={(0.25,0.8)},draw=none,fill=none},
legend cell align={left},
x tick style={black,thick},
x label style=
{at={(ticklabel cs:0.5)},anchor=near ticklabel},
xmin=90,xmax=140,
xtick={90,100,...,140},
xtick pos=bottom,
minor x tick num=1,
xtick align=outside,
ymajorticks=false,
% y label style=
% {at={(ticklabel cs:0.5)},anchor=near ticklabel},
% ylabel={\myfont norm. heat flow},
]
\fill [gray!20] (90,0.56) rectangle (115,2);
\fill [green!20] (115,0.56) rectangle (140,2);
\addplot [blue,very thick] file {thermaltie.txt};
\node at (axis cs: 100,1.3) {\Large\textit{\myfont endo $\uparrow$}};
\end{axis}
\end{tikzpicture}
\vspace{1em}
\begin{tikzpicture}[trim axis left]
\begin{axis}[
enable tick line clipping=false, % makes all ticks same width
axis line style=thick,
axis on top=true,
width=9cm,
height=7cm,
y tick style={black,thick},
y label style=
{at={(ticklabel cs:0.5)},anchor=near ticklabel},
ymin=400,ymax=900,
ytick={400,500,...,900},
ytick pos=left,
ytick align=outside,
x tick style={black,thick},
x label style=
{at={(ticklabel cs:0.5)},anchor=near ticklabel},
xmin=90,xmax=140,
xtick={90,100,...,140},
xtick pos=bottom,
minor x tick num=1,
xtick align=outside,
xlabel={$T$ [\SI{}{\celsius}]},
ylabel={$G_a$ [J/m$^2$]}
]
\fill [gray!20] (90,400) rectangle (115,900);
\fill [green!20] (115,400) rectangle (140.9,900);
\addplot [only marks,mark=*,mark options={scale=1.7,blue}]
table [x=x, y=y, y error=ey] {
x y ey
95 463 14
100 584 9
105 727 14
110 816 5
114 836 13
120 766 7
125 723 5
130 753 15
};
\addplot [only marks,mark=*,mark options={scale=1.5,blue,very thick,fill=green!20},error bars=red] table [x=x, y=y, y error=ey] {
x y ey
116 833 41
};
\end{axis}
\end{tikzpicture}
\end{figure}
\end{document}
结果很不错，如下所示，
但我希望将输出作为standalone可以在 Keynote 幻灯片中使用的文件，而无需裁剪边缘。一旦我在代码中更改\documentclass[a4paper]{article}为\documentclass{standalone}，pdf 就会变得混乱。有人知道为什么会发生这种情况吗？
答案1
您不能在普通的独立类中使用像图形环境那样的浮点数。
但是，在评论中，您询问如何在一个图形（或图片）中绘制两个图。以下是将两个轴叠加在一起的一种方法：groupplots。
\documentclass[tikz,border=3mm]{standalone}
\usepackage{pgfplots}
\usepgfplotslibrary{groupplots}
%\usepackage{pgfplotstable}%fitting functions
\usepackage{siunitx}
\pgfkeys{/pgf/number format/.cd,1000 sep={}}
\newcommand{\myfont}{\fontfamily{cmss}\selectfont}% used with mathpazo
\pgfdeclareplotmark{fat-}
{%
\pgfsetlinewidth{1}
\pgfpathmoveto{\pgfqpoint{\pgfplotmarksize}{0pt}}%
\pgfpathlineto{\pgfqpoint{-\pgfplotmarksize}{0pt}}%
\pgfusepathqstroke
}%
\pgfplotsset{/pgfplots/error bars/error bar style={very thick,blue,mark size=2.5},/pgfplots/error bars/error mark={fat-}}
\pgfplotsset{compat=1.16}
\pgfplotsset{label style={font=\Large},
tick label style={font=\Large}}
\pgfplotsset{error bars/.cd,
x dir=both, x explicit,
y dir=both, y explicit,
}
\begin{document}
\begin{tikzpicture}%[trim axis left]
\begin{groupplot}[group style={group size=1 by 2,
vertical sep=4em},
enable tick line clipping=false, % makes all ticks same width
axis line style=thick,
axis on top=true,
axis x line=bottom,
x axis line style=-,
legend style={at={(0.25,0.8)},draw=none,fill=none},
legend cell align={left},
x tick style={black,thick},
x label style=
{at={(ticklabel cs:0.5)},anchor=near ticklabel},
xmin=90,xmax=140,
xtick={90,100,...,140},
xtick pos=bottom,
minor x tick num=1,
xtick align=outside,
]
\nextgroupplot[ width=9cm,
height=4cm,axis y line=none,
]
\fill [gray!20] (90,0.56) rectangle (115,2);
\fill [green!20] (115,0.56) rectangle (140,2);
\addplot [domain=90:140,blue,very thick] {0.56+x*x*exp(-x/10)};
% \addplot [blue,very thick] file {thermaltie.txt};
\node at (axis cs: 100,1.3) {\Large\textit{\myfont endo $\uparrow$}};
\nextgroupplot[width=9cm,
height=7cm,
y tick style={black,thick},
y label style=
{at={(ticklabel cs:0.5)},anchor=near ticklabel},
ymin=400,ymax=900,
ytick={400,500,...,900},
xlabel={$T$ [\SI{}{\celsius}]},
ylabel={$G_a$ [J/m$^2$]}
]
\fill [gray!20] (90,400) rectangle (115,900);
\fill [green!20] (115,400) rectangle (140.9,900);
\addplot [only marks,mark=*,mark options={scale=1.7,blue}]
table [x=x, y=y, y error=ey] {
x y ey
95 463 14
100 584 9
105 727 14
110 816 5
114 836 13
120 766 7
125 723 5
130 753 15
};
\addplot [only marks,mark=*,mark options={scale=1.5,blue,very thick,fill=green!20},error bars=red] table [x=x, y=y, y error=ey] {
x y ey
116 833 41
};
\end{groupplot}
\end{tikzpicture}
\end{document}
