![极轴图中的误差线](https://linux22.com/image/472882/%E6%9E%81%E8%BD%B4%E5%9B%BE%E4%B8%AD%E7%9A%84%E8%AF%AF%E5%B7%AE%E7%BA%BF.png)
我正在尝试为 y 数据点创建一个带有误差线的极轴图。我尝试了与error bars/.cd
轴图类似的方法,但结果非常混乱。作为背景,x 数据是角度,y 数据是半径。
我在 pgfplots 中找不到其他方法,还是我做错了?我的代码如下:
\documentclass{article}
\usepackage{pgfplots}
\pgfplotsset{compat = newest, error bars/y explicit}
\usepgfplotslibrary{polar}
\begin{document}
\begin{tikzpicture}
\begin{polaraxis}
[
/pgf/number format/use comma,
xmin = 0, xmax = 360,
ymin = 30, ymax = 110,
grid = both,
major grid style = gray!60,
minor grid style = gray!10,
minor tick num = 3,
yticklabel style = {yshift = -4.65cm},
y axis line style = {yshift = -4.77cm},
ytick style = {yshift = -4.77cm},
legend cell align = left,
legend style = {at = {(0.25,-0.22)}}
]
% Adding plot from data
\addplot+
[
blue!70!yellow,
only marks,
mark = square*,
mark options = {fill = blue!70!yellow},
mark size = 0.75pt,
error bars/.cd,
y dir = both
]
coordinates{ (0.0, 91.32) +- (0, 2.58)
(15.0, 91.83) +- (0, 2.61)
(30.0, 90.90) +- (0, 2.55)
(45.0, 90.56) +- (0, 2.53)
(60.0, 90.98) +- (0, 2.56)
(75.0, 90.98) +- (0, 2.51)
(90.0, 91.06) +- (0, 2.56)
};
\end{polaraxis}
\end{tikzpicture}
\end{document}
答案1
您可以使用如下箭头图:
\documentclass[tikz, border=1cm]{standalone}
\usepackage{pgfplots}
\pgfplotsset{compat=1.18}
\usepackage{pgfplotstable}
\usepgfplotslibrary{polar}
\begin{document}
\begin{tikzpicture}
\pgfplotstableread{
x y e
60.0 85 3
55.0 88 3
50.0 90 5
55.0 96 3
65.0 94 3
86.0 91 3
}\loadedtable %data changed
\begin{polaraxis}[
xmin=0, xmax=360,
ymin=30, ymax=110,
grid=both,
grid style=gray!20,
]
\addplot[
blue,
forget plot,
quiver={u=0,v=2*\thisrow{e}},
|-|,
] table[y expr={\thisrow{y}-\thisrow{e}}]{\loadedtable};
\addplot+[
only marks,
mark size=0.75pt,
] table{\loadedtable};
\node[align=left, font=\tiny] at (82,80) {I can't\\shake him!};
\end{polaraxis}
\end{tikzpicture}
\end{document}