我在 pgfplots 中制作组图时遇到了麻烦。我想要制作 2 个单独的图表，每个图表都有两条回归线和两组点，但 groupplot 会将所有东西都集中到 1 组轴上。我在网上找不到每个 nextgroupplot 命令有多个 addplot 命令的示例，所以我很为难。我的页面如下（格式有点不对，因为它是自动生成的）：
\documentclass{article}
\usepackage{pgfplots}
\usepackage{pgfplotstable}
\usepgfplotslibrary{groupplots}
\usepackage{siunitx}
\usepackage{graphicx}
\pgfplotsset{compat=1.5}
\title{Test Report}
\author{Big Joe}
\date{}
\begin{document}
\maketitle\begin{tikzpicture}\begin{groupplot}\nextgroupplot [xlabel=Order of spot,
ylabel=$sin(\theta) \cdot d $ /m,
legend pos=outer north east,
title=Given wavelength: 460]
\addplot
[only marks,
mark=*,
mark options={red}]
table
[y={Min dSin},
x=Order,
col sep=comma]
{460photocell.csv};
\addplot
[only marks,
mark=*,
mark options={orange}]
table
[y={Max dSin},
x=Order,
col sep=comma]
{460photocell.csv};
\addplot[thin, blue] table [
col sep=comma,
x=Order,
y={create col/linear regression={y={Max dSin}, x=Order}}]
{460photocell.csv};
\xdef\slopeA{\pgfplotstableregressiona}
\xdef\interceptA{\pgfplotstableregressionb}
\addplot [thin, green] table [
col sep=comma,
x=Order,
y={create col/linear regression={y={Min dSin}, x=Order}}]
{460photocell.csv};
\xdef\slopeB{\pgfplotstableregressiona}
\xdef\interceptB{\pgfplotstableregressionb}
\addlegendentry{Max Slope}
\addlegendentry{Min Slope}
\addlegendentry{
$ \pgfmathprintnumber{\slopeA} \cdot x \pgfmathprintnumber[print sign]{\interceptA} $ }
\addlegendentry{
$ \pgfmathprintnumber{\slopeB} \cdot x \pgfmathprintnumber[print sign]{\interceptB} $ }\nextgroupplot [xlabel=Order of spot,
ylabel=$sin(\theta) \cdot d $ /m,
legend pos=outer north east,
title=Given wavelength: 470]
\addplot
[only marks,
mark=*,
mark options={red}]
table
[y={Min dSin},
x=Order,
col sep=comma]
{470photocell.csv};
\addplot
[only marks,
mark=*,
mark options={orange}]
table
[y={Max dSin},
x=Order,
col sep=comma]
{470photocell.csv};
\addplot[thin, blue] table [
col sep=comma,
x=Order,
y={create col/linear regression={y={Max dSin}, x=Order}}]
{470photocell.csv};
\xdef\slopeA{\pgfplotstableregressiona}
\xdef\interceptA{\pgfplotstableregressionb}
\addplot [thin, green] table [
col sep=comma,
x=Order,
y={create col/linear regression={y={Min dSin}, x=Order}}]
{470photocell.csv};
\xdef\slopeB{\pgfplotstableregressiona}
\xdef\interceptB{\pgfplotstableregressionb}
\addlegendentry{Max Slope}
\addlegendentry{Min Slope}
\addlegendentry{
$ \pgfmathprintnumber{\slopeA} \cdot x \pgfmathprintnumber[print sign]{\interceptA} $ }
\addlegendentry{
$ \pgfmathprintnumber{\slopeB} \cdot x \pgfmathprintnumber[print sign]{\interceptB} $ }\end{groupplot} \end{tikzpicture}\end{document}
其中 460photocell.csv 包含：
Order,Min dSin,Max dSin
1,0,0
2,4.51232E-07,5.96007E-07
3,8.95839E-07,1.07146E-06
4,1.34728E-06,1.51745E-06
并且 470photocell.csv 包含：
Order,Min dSin,Max dSin
1,0,0
2,4.64486E-07,5.78254E-07
3,9.60654E-07,1.08358E-06
4,1.50085E-06,1.58593E-06
这可能吗？
答案1
groupplot您必须使用 或 和 来设置环境group size=1 by 2中columns=1的绘图总数rows=2。请注意，初始值group size=1 by 1表示columns=1 and行数 = 1。
所以你可以使用
\begin{groupplot}[
group style={group size=1 by 2, vertical sep=2cm},
xlabel=Order of spot,
ylabel=$sin(\theta) \cdot d $ /m,
legend pos=outer north east
]
\nextgroupplot [title=Given wavelength: 460]
...
\nextgroupplot [title=Given wavelength: 470]
...
\end{groupplot}
代码：
\documentclass{article}
\usepackage{pgfplots}
\usepackage{pgfplotstable}
\usepgfplotslibrary{groupplots}
\pgfplotsset{compat=1.5}% Why 1.5? The current version is 1.11 or 1.12
\begin{filecontents*}{460photocell.csv}
Order,Min dSin,Max dSin
1,0,0
2,4.51232E-07,5.96007E-07
3,8.95839E-07,1.07146E-06
4,1.34728E-06,1.51745E-06
\end{filecontents*}
\begin{filecontents*}{470photocell.csv}
Order,Min dSin,Max dSin
1,0,0
2,4.64486E-07,5.78254E-07
3,9.60654E-07,1.08358E-06
4,1.50085E-06,1.58593E-06
\end{filecontents*}
\begin{document}
\begin{tikzpicture}
\begin{groupplot}[
group style={group size=1 by 2, vertical sep=2cm},
xlabel=Order of spot,
ylabel=$sin(\theta) \cdot d $ /m,
legend pos=outer north east
]
\nextgroupplot [title=Given wavelength: 460]
\addplot[only marks,mark=*,mark options={red}]
table[y={Min dSin},x=Order,col sep=comma]{460photocell.csv};
\addplot[only marks,mark=*,mark options={orange}]
table[y={Max dSin},x=Order,col sep=comma]{460photocell.csv};
\addplot[thin, blue]
table [col sep=comma,x=Order,y={create col/linear regression={y={Max dSin}}}]
{460photocell.csv};
\xdef\slopeA{\pgfplotstableregressiona}
\xdef\interceptA{\pgfplotstableregressionb}
\addplot [thin, green]
table [col sep=comma,x=Order,y={create col/linear regression={y={Min dSin},}}]
{460photocell.csv};
\xdef\slopeB{\pgfplotstableregressiona}
\xdef\interceptB{\pgfplotstableregressionb}
\addlegendentry{Max Slope}
\addlegendentry{Min Slope}
\addlegendentry{$\pgfmathprintnumber{\slopeA}\cdot x\pgfmathprintnumber[print sign]{\interceptA}$}
\addlegendentry{$\pgfmathprintnumber{\slopeB}\cdot x\pgfmathprintnumber[print sign]{\interceptB}$}
\nextgroupplot [title=Given wavelength: 470]
\addplot[only marks,mark=*,mark options={red}]
table[y={Min dSin},x=Order,col sep=comma]{470photocell.csv};
\addplot[only marks,mark=*,mark options={orange}]
table[y={Max dSin},x=Order,col sep=comma]{470photocell.csv};
\addplot[thin, blue]
table [col sep=comma,x=Order,y={create col/linear regression={y={Max dSin}}}]
{470photocell.csv};
\xdef\slopeA{\pgfplotstableregressiona}
\xdef\interceptA{\pgfplotstableregressionb}
\addplot [thin, green]
table [col sep=comma,x=Order,y={create col/linear regression={y={Min dSin},}}]
{470photocell.csv};
\xdef\slopeB{\pgfplotstableregressiona}
\xdef\interceptB{\pgfplotstableregressionb}
\addlegendentry{Max Slope}
\addlegendentry{Min Slope}
\addlegendentry{$\pgfmathprintnumber{\slopeA}\cdot x\pgfmathprintnumber[print sign]{\interceptA}$}
\addlegendentry{$\pgfmathprintnumber{\slopeB}\cdot x\pgfmathprintnumber[print sign]{\interceptB}$}
\end{groupplot}
\end{tikzpicture}
\end{document}