![在极坐标图中移动 yaxis 的干净解决方案](https://linux22.com/image/390361/%E5%9C%A8%E6%9E%81%E5%9D%90%E6%A0%87%E5%9B%BE%E4%B8%AD%E7%A7%BB%E5%8A%A8%20yaxis%20%E7%9A%84%E5%B9%B2%E5%87%80%E8%A7%A3%E5%86%B3%E6%96%B9%E6%A1%88.png)
我希望能够通过设置 xmin=0 和 xmax=180 来绘制附加极坐标图 (MWE) 的上半部分。但是,当我同时想要拥有带有标签和标题的 yaxis 时,这并不容易,如下所示。有没有一种干净的方法来解决这个问题,而无需旋转坐标系(并且 ylabel/yticklabels 实际上遵循 yaxis 的替换)?
\documentclass{article}
\usepackage{tikz}
\usepackage{pgfplots}
\usepackage{pgfplotstable}
\pgfplotsset{compat=1.12}
\usepgfplotslibrary{polar}
\begin{document}
\begin{figure}
\centering
\begin{tikzpicture}
\def\xshift{5cm}
\begin{polaraxis}[
xmin=90,
xmax=450,
major tick length=2,
xtick={90,120,...,420},
xticklabel={\pgfmathtruncatemacro{\mytick}{mod(\tick,360)}${\mytick}^\circ$},
grid=both,
y axis line style={xshift=-\xshift},
ytick style={xshift=-\xshift},
yticklabel style={
xshift=-\xshift-0.3em,
},
ymax=0.5,
ytick={0,0.1,...,0.5},
ylabel={Cumbersome label},
every axis y label/.style={
xshift=-\xshift-2.5em,
yshift=1.4cm,
rotate=90,
anchor=south,
},
]
\addplot+[mark=none,domain=90:450,smooth,blue,samples=1000] {sin(2*x)*cos(2*x)};
\end{polaraxis}
\end{tikzpicture}
\end{figure}
\end{document}
为了提供一个干净的解决方案,请考虑以下内容
\documentclass{article}
\usepackage{tikz}
\usepackage{pgfplots}
\usepackage{pgfplotstable}
\pgfplotsset{compat=1.12}
\usepgfplotslibrary{polar}
\begin{document}
\begin{figure}
\centering
\begin{tikzpicture}
\def\xshift{5cm}
\begin{polaraxis}[
xmin=0,
xmax=180,
major tick length=2,
xtick={0,30,...,180},
xticklabel={\pgfmathtruncatemacro{\mytick}{mod(\tick,360)}${\mytick}^\circ$},
grid=both,
y axis line style={rotate=-90,yshift=-\xshift},
ytick style={rotate=-90,yshift=-\xshift},
yticklabel style={rotate=-90,yshift=-\xshift},
ymax=0.5,
ytick={0,0.1,...,0.5},
ylabel={Cumbersome label},
every axis y label/.style={
xshift=-\xshift,
rotate=90,
anchor=south,
},
]
\addplot+[mark=none,domain=90:450,smooth,blue,samples=1000] {sin(2*x)*cos(2*x)};
\end{polaraxis}
\end{tikzpicture}
\end{figure}
\end{document}
答案1
不知道这是否算干净,但围绕轴原点旋转物体可能是一种选择。
\documentclass[border=5mm]{standalone}
\usepackage{pgfplotstable}
\pgfplotsset{compat=1.12}
\usepgfplotslibrary{polar}
\begin{document}
\begin{tikzpicture}
\newcommand\xshift{5cm}
\newcommand\AxisWidth{8cm}
\begin{polaraxis}[
xmin=0,
xmax=180,
scale only axis, % set width of axis only to
width=\AxisWidth, % this value
major tick length=2,
xtick={0,30,...,180},
xticklabel={\pgfmathtruncatemacro{\mytick}{mod(\tick,360)}${\mytick}^\circ$},
grid=both,
y axis line style={
overlay, % added so it doesn't increase the size of the bounding box
rotate around={90:(current axis.origin)}, % makes it a vertical line through the origin
yshift=\xshift, % shift left
shorten >=\AxisWidth/4, % seemed to shorten line at both ends, so shorten by a quarter of the length
xshift=\AxisWidth/4, % and then shift it up
line cap=rect
},
ytick style={rotate=-90,yshift=-\xshift},
yticklabel style={
rotate=-90, % first rotate nodes "in place"
rotate around={90:(current axis.origin)}, % then rotate them around the origin
xshift=-\xshift, % and move them left
left, % set a useful anchor
alias=ytick-\ticknum % give ticklabels nodes aliases
},
ymax=0.5,
ytick={0,0.1,...,0.51},
ylabel={Cumbersome label},
ylabel style={
at=(current axis.west -| ytick-1.west), % place at y-coord of current axis.west, x-coord of of ytick-1
left, % set useful anchor
anchor=south,
rotate=90
}
]
\addplot+[mark=none,domain=90:450,smooth,blue,samples=100] {sin(2*x)*cos(2*x)};
\end{polaraxis}
\end{tikzpicture}
\end{document}