我正在投影機幻燈片中製作 3x3 的繪圖矩陣。位置 (1,1) 為空，第一行的其餘部分具有列標題，第一列的其餘部分具有行標題。位置 (2,2) 到 (3,3) 包含實際繪圖。我正在使用groupplots（pgfplots1.12）來製作這樣一個矩陣。
我收到以下兩個錯誤訊息：
包 pgfplots 警告：您有一個範圍為空的軸（沿 y 方向）。 R 將其替換為預設範圍並清除所有繪圖。在輸入行 139 上。
！包 pgfplots 錯誤：錯誤：繪圖寬度“28.45274pt”太小。在保持標籤大小恆定的情況下無法實現這一點。抱歉，標籤尺寸只是近似值。你需要調整你的寬度..
在第二個錯誤的情況下，我真的不知道在哪裡增加寬度。您能幫我修復我的程式碼，這樣我就不會收到上述錯誤嗎？
預期結果如下圖所示。
到目前為止我的程式碼如下：
\documentclass{beamer}
\usepackage{pgfplots}
\usetikzlibrary{pgfplots.groupplots}
\pgfplotsset{compat=1.12}
\pgfmathdeclarefunction{gauss}{2}{%
\pgfmathparse{1/(#2*sqrt(2*pi))*exp(-((x-#1)^2)/(2*#2^2))}%
}
\begin{document}
\begin{frame}{Distribution Matrix}
\begin{tikzpicture}
\begin{groupplot}[
group style={
group name=my plots,
group size=3 by 3,
},
footnotesize,
tickpos=left,
ytick align=outside,
xtick align=outside,
enlarge x limits=false
]
\nextgroupplot[
width=1cm,
height=1cm,
hide axis]
\nextgroupplot[
width=5cm,
height=1cm,
no markers, domain=0:9, samples=100,
axis line style = { draw = none },
xlabel style={at={(axis description cs:0.5,-0.01)},anchor=north},
xlabel={Column 1},
ticks=none,
axis on top]
\nextgroupplot[
width=5cm,
height=1cm,
no markers, domain=0:9, samples=100,
axis line style = { draw = none },
xlabel style={at={(axis description cs:0.5,-0.01)},anchor=north},
xlabel={Column 2},
ticks=none,
axis on top]
\nextgroupplot[
width=1cm,
height=4cm,
no markers, domain=0:9, samples=100,
axis lines=center,
axis line style = { draw = none },
ylabel style={at={(axis description cs:-0.01,0.5)},rotate=90,anchor=south},
ylabel={Row 1},
ticks=none,
axis on top]
\nextgroupplot[
width=5cm,
height=4cm,
no markers, domain=0:9, samples=100,
axis lines=center,
axis line style={->},
xlabel style={at={(axis description cs:0.5,-0.01)},anchor=north},
ylabel style={at={(axis description cs:-0.01,0.5)},rotate=90,anchor=south},
ticks=none,
axis on top]
\addplot [very thick,cyan!50!black] {gauss(4,1)};
\addplot [thick,red, no markers] coordinates {(5.5,0.0) (5.5,0.4)};
\nextgroupplot[
width=5cm,
height=4cm,
no markers, domain=0:9, samples=100,
axis lines=center,
axis line style={->},
xlabel style={at={(axis description cs:0.5,-0.01)},anchor=north},
ylabel style={at={(axis description cs:-0.01,0.5)},rotate=90,anchor=south},
ticks=none,
axis on top]
\addplot [very thick,cyan!50!black] {gauss(4,1)};
\addplot [thick,red, no markers] coordinates {(5.5,0.0) (5.5,0.4)};
\nextgroupplot[
width=1cm,
height=4cm,
no markers, domain=0:9, samples=100,
axis lines=center,
axis line style = { draw = none },
ylabel style={at={(axis description cs:-0.01,0.5)},rotate=90,anchor=south},
ylabel={Row 2},
ticks=none,
axis on top]
\nextgroupplot[
width=5cm,
height=4cm,
no markers, domain=0:9, samples=100,
axis lines=center,
axis line style={->},
xlabel style={at={(axis description cs:0.5,-0.01)},anchor=north},
ylabel style={at={(axis description cs:-0.01,0.5)},rotate=90,anchor=south},
ticks=none,
axis on top]
\addplot [very thick,cyan!50!black] {gauss(4,1)};
\addplot [thick,red, no markers] coordinates {(2.5,0) (2.5,0.4)};
\addplot [thick,red, no markers] coordinates {(5.5,0.0) (5.5,0.4)};
\nextgroupplot[
width=5cm,
height=4cm,
no markers, domain=0:9, samples=100,
axis lines=center,
axis line style={->},
xlabel style={at={(axis description cs:0.5,-0.01)},anchor=north},
ylabel style={at={(axis description cs:-0.01,0.5)},rotate=90,anchor=south},
ticks=none,
axis on top]
\addplot [dashed,very thick,cyan!50!black] {gauss(4,1)};
\addplot [very thick,cyan!50!black] {gauss(5,1)};
\addplot [thick,red, no markers] coordinates {(2.5,0) (2.5,0.4)};
\addplot [thick,red, no markers] coordinates {(5.5,0.0) (5.5,0.4)};
\end{groupplot}
\end{tikzpicture}
\end{frame}
\end{document}
先致謝！
答案1
您不需要使用空\nextgroupplot來插入Row 1等。
\node[rotate=90,above=5mm] at (my plots c1r1.west) {Row 1};
\node[rotate=90,above=5mm] at (my plots c1r2.west) {Row 2};
\node[above=5mm] at (my plots c1r1.north) {Column 1};
\node[above=5mm] at (my plots c2r1.north) {Column 2};
寬度問題出現width=1cm在那些空的\nextgroupplots 中，它非常小並且pgfplots抱怨它。
這是您的改進程式碼：
\documentclass{beamer}
\usepackage{pgfplots}
\usetikzlibrary{pgfplots.groupplots}
\pgfplotsset{compat=1.12}
\pgfmathdeclarefunction{gauss}{2}{%
\pgfmathparse{1/(#2*sqrt(2*pi))*exp(-((x-#1)^2)/(2*#2^2))}%
}
\begin{document}
\begin{frame}{Distribution Matrix}
%\centering if you want to center this
\begin{tikzpicture}
\begin{groupplot}[
group style={
group name=my plots,
group size=2 by 2,
},
footnotesize,
tickpos=left,
ytick align=outside,
xtick align=outside,
enlarge x limits=false
]
\nextgroupplot[
width=5cm,
height=4cm,
no markers, domain=0:9, samples=100,
axis lines=center,
axis line style={->},
xlabel style={at={(axis description cs:0.5,-0.01)},anchor=north},
ylabel style={at={(axis description cs:-0.01,0.5)},rotate=90,anchor=south},
ticks=none,
axis on top]
\addplot [very thick,cyan!50!black] {gauss(4,1)};
\addplot [thick,red, no markers] coordinates {(5.5,0.0) (5.5,0.4)};
\nextgroupplot[
width=5cm,
height=4cm,
no markers, domain=0:9, samples=100,
axis lines=center,
axis line style={->},
xlabel style={at={(axis description cs:0.5,-0.01)},anchor=north},
ylabel style={at={(axis description cs:-0.01,0.5)},rotate=90,anchor=south},
ticks=none,
axis on top]
\addplot [very thick,cyan!50!black] {gauss(4,1)};
\addplot [thick,red, no markers] coordinates {(5.5,0.0) (5.5,0.4)};
\nextgroupplot[
width=5cm,
height=4cm,
no markers, domain=0:9, samples=100,
axis lines=center,
axis line style={->},
xlabel style={at={(axis description cs:0.5,-0.01)},anchor=north},
ylabel style={at={(axis description cs:-0.01,0.5)},rotate=90,anchor=south},
ticks=none,
axis on top]
\addplot [very thick,cyan!50!black] {gauss(4,1)};
\addplot [thick,red, no markers] coordinates {(2.5,0) (2.5,0.4)};
\addplot [thick,red, no markers] coordinates {(5.5,0.0) (5.5,0.4)};
\nextgroupplot[
width=5cm,
height=4cm,
no markers, domain=0:9, samples=100,
axis lines=center,
axis line style={->},
xlabel style={at={(axis description cs:0.5,-0.01)},anchor=north},
ylabel style={at={(axis description cs:-0.01,0.5)},rotate=90,anchor=south},
ticks=none,
axis on top]
\addplot [dashed,very thick,cyan!50!black] {gauss(4,1)};
\addplot [very thick,cyan!50!black] {gauss(5,1)};
\addplot [thick,red, no markers] coordinates {(2.5,0) (2.5,0.4)};
\addplot [thick,red, no markers] coordinates {(5.5,0.0) (5.5,0.4)};
\end{groupplot}
\node[rotate=90,above=5mm] at (my plots c1r1.west) {Row 1};
\node[rotate=90,above=5mm] at (my plots c1r2.west) {Row 2};
\node[above=5mm] at (my plots c1r1.north) {Column 1};
\node[above=5mm] at (my plots c2r1.north) {Column 2};
\end{tikzpicture}
\end{frame}
\end{document}
