我有以下散点图：
我想知道如何使某些点oplus有效，使另一些点ominus无效。
在下面的tex代码中我可以替换：
\addplot[only marks, mark=+, mark size=8pt, thin, color = blue]
和：
\addplot[only marks, mark=oplus, mark size=8pt, thin, color = blue]
哪个有效（我+用进行了更改oplus）并给我以下输出：
但是，当我想将 更改-为时ominus，却不起作用。
\addplot[only marks, mark=-, mark size=8pt, thin, color = red]
可以工作，但是：
\addplot[only marks, mark=ominus, mark size=8pt, thin, color = red]
才不是。
我曾尝试定义 uni-code：
\usepackage[utf8]{inputenc}
\DeclareUnicodeCharacter{2296}{\anchor} # minus with circle
但无法让它工作。
乳胶：
\documentclass[]{article}
\usepackage{tikz}
\usepackage{pgfplots}
\usepgfplotslibrary{fillbetween}
\usetikzlibrary{plotmarks}
\usepackage{graphicx}
\usepgfplotslibrary{groupplots}
\definecolor{babyblue}{rgb}{0.54, 0.81, 0.94}
\definecolor{bubblegum}{rgb}{0.99, 0.76, 0.8}
\begin{document}
% plot 1: base plot
\begin{tikzpicture}[scale=0.40]
\pgfplotsset{
scale only axis,
}
\begin{axis}[
%xlabel=$A$,
%ylabel=$B$,
ticks=none,
]
\addplot[only marks, mark=+, mark size=8pt, thin, color = blue]
coordinates{ % + data
(0.05,0.50)
(0.10,0.15)
(0.30,0.85)
(0.45, 0.95)
(0.60, 0.75)
}; %\label{plot_one}
\addplot[only marks, mark=-, mark size=8pt, thin, color = red]
coordinates{ % + data
(0.20,0.05)
(0.25,0.60)
(0.55,0.40)
(0.90, 0.85)
(0.90, 0.15)
};
\end{axis}
\end{tikzpicture}
\end{document}
编辑：
当我应用时，mark = halfcircle当我为背景着色时，我的绘图中会添加一些空白。我怎样才能将它们着色为与背景相同的颜色？
新文本：
\documentclass[]{article}
\usepackage{tikz}
\usepackage{pgfplots}
\usepgfplotslibrary{fillbetween}
\usetikzlibrary{plotmarks}
\usepackage{graphicx}
\usepgfplotslibrary{groupplots}
\definecolor{babyblue}{rgb}{0.54, 0.81, 0.94}
\definecolor{bubblegum}{rgb}{0.99, 0.76, 0.8}
\begin{document}
% plot 1: base plot
\begin{tikzpicture}[scale=0.40]
\pgfplotsset{
scale only axis,
}
\begin{axis}[
%xlabel=$A$,
%ylabel=$B$,
ticks=none,
]
\addplot[only marks, mark=+, mark size=8pt, thin, color = blue]
coordinates{ % + data
(0.05,0.50)
(0.10,0.15)
(0.30,0.85)
(0.45, 0.95)
(0.60, 0.75)
}; %\label{plot_one}
\addplot[only marks, mark=halfcircle, mark size=8pt, thin, color = red]
coordinates{ % + data
(0.20,0.05)
(0.25,0.60)
(0.55,0.40)
(0.90, 0.85)
(0.90, 0.15)
};
\path[name path = begin_left_shade_path_4] (axis cs:1.0, 0.7) -- (axis cs:0.0, 0.7);
\path[name path = end_left_shade_path_4] (axis cs:1.0, 0.0) -- (axis cs:0.0, 0.0);
\addplot [bubblegum] fill between[of = begin_left_shade_path_4 and end_left_shade_path_4, soft clip = {domain=0.0:0.95}];
\path[name path = begin_left_shade_path_2] (axis cs:0.0, 1.0) -- (axis cs:1.0, 1.0);
\path[name path = end_left_shade_path_2] (axis cs:0.0, 0.70) -- (axis cs:1.0, 0.70);
\addplot [babyblue] fill between[of = begin_left_shade_path_2 and end_left_shade_path_2, soft clip = {domain=0.0:0.95}];
\end{axis}
\end{tikzpicture}
\end{document}
答案1
如果您阅读了 PGFPlots 手册中有关标记的内容，您将不会发现这个不祥的ominus标记。对于halfcircle第 184 页：
标记=半圆
其中一半用白色填充（更准确地说，用标记颜色）。
因此您只需将其更改mark color为与背景相同即可：
\documentclass[]{article}
\usepackage{tikz}
\usepackage{pgfplots}
\usepgfplotslibrary{fillbetween}
\usetikzlibrary{plotmarks}
\usepackage{graphicx}
\usepgfplotslibrary{groupplots}
\definecolor{babyblue}{rgb}{0.54, 0.81, 0.94}
\definecolor{bubblegum}{rgb}{0.99, 0.76, 0.8}
\begin{document}
% plot 1: base plot
\begin{tikzpicture}[scale=0.40]
\pgfplotsset{
scale only axis,
}
\begin{axis}[
%xlabel=$A$,
%ylabel=$B$,
ticks=none,
]
\addplot[only marks, mark=+, mark size=8pt, thin, color = blue]
coordinates{ % + data
(0.05,0.50)
(0.10,0.15)
(0.30,0.85)
(0.45, 0.95)
(0.60, 0.75)
}; %\label{plot_one}
\addplot[only marks, mark=halfcircle, mark color=bubblegum, mark size=8pt, thin, color = red]
coordinates{ % + data
(0.20,0.05)
(0.25,0.60)
(0.55,0.40)
(0.90, 0.15)
};
\addplot[only marks, mark=halfcircle, mark color=babyblue, mark size=8pt, thin, color = red]
coordinates{ % + data
(0.90, 0.85)
};
\path[name path = begin_left_shade_path_4] (axis cs:1.0, 0.7) -- (axis cs:0.0, 0.7);
\path[name path = end_left_shade_path_4] (axis cs:1.0, 0.0) -- (axis cs:0.0, 0.0);
\addplot [bubblegum] fill between[of = begin_left_shade_path_4 and end_left_shade_path_4, soft clip = {domain=0.0:0.95}];
\path[name path = begin_left_shade_path_2] (axis cs:0.0, 1.0) -- (axis cs:1.0, 1.0);
\path[name path = end_left_shade_path_2] (axis cs:0.0, 0.70) -- (axis cs:1.0, 0.70);
\addplot [babyblue] fill between[of = begin_left_shade_path_2 and end_left_shade_path_2, soft clip = {domain=0.0:0.95}];
\end{axis}
\end{tikzpicture}
\end{document}
编辑： 在 TikZ 手册中，我发现了这一点：
特殊值 none 禁止填充相应部分。
因此你可以使用：
\addplot[only marks, mark=halfcircle, mark color=none, mark size=8pt, thin, color = red]
答案2
由于没有“ominus-mark”，您可以自己创建标记：
\pgfdeclareplotmark{myominus}{....}
1a. 新的。如果您想使用现成的东西，您可以circle split从shapes图书馆中获取。
请注意，另一种可能性是mark=halfcircle，由于“一半用白色填充”，因此并不适合可填充的“预兆”
\pgfdeclareplotmark{myominus}{
\node[shape=circle split,
draw, fill, minimum size=2*\pgfplotmarksize, inner sep=0pt,
]{};
}
\documentclass{article}
\usepackage{pgfplots}
\pgfplotsset{compat=newest}
\usetikzlibrary{shapes}% <---
\pgfdeclareplotmark{myominus}{
\node[shape=circle split,
draw, fill,
minimum size=2*\pgfplotmarksize, inner sep=0pt,
]{};
}
\begin{document}
\begin{tikzpicture}
\begin{axis}[
only marks,
mark size=5pt
]
\addplot+[mark=oplus*, mark options={fill=cyan!55}] coordinates {
(0.20,0.05) %
(0.25,0.60)
(0.55,0.40)
(0.90, 0.85)
};
\addplot+[red, mark=myominus, mark options={fill=pink} ] coordinates {
(0.20,0.05) %
(0.05,0.50)
(0.10,0.15)
(0.30,0.85)
(0.45, 0.95)
(0.60, 0.75)
};
\end{axis}
\end{tikzpicture}
\end{document}
1b.因为您在处理时改变了您的问题，所以我确实不知道您想要创建什么。
\documentclass{article}
\usepackage{pgfplots}
\pgfplotsset{compat=newest}
\usetikzlibrary{shapes}% <---
\pgfdeclareplotmark{myominus}{
\node[shape=circle split,
draw, minimum size=2*\pgfplotmarksize, inner sep=0pt,
]{};
}
\pgfdeclareplotmark{myominus*}{
\node[shape=circle split,
draw, fill,
minimum size=2*\pgfplotmarksize, inner sep=0pt,
]{};
}
\begin{document}
\begin{tikzpicture}
\begin{axis}[
ticks=none,
only marks,
mark size=5.67pt
]
\addplot+[mark=oplus, mark options={fill=none}] coordinates {
(0.20,0.05) %
(0.25,0.60)
(0.55,0.40)
(0.90, 0.85)
};
\addplot+[mark=oplus*, draw=brown, mark options={draw=brown, fill=purple!44}] coordinates {
(0.35,0.60)
};
\addplot+[red, mark=myominus] coordinates {
(0.05,0.50)
% (0.10,0.15)
(0.30,0.85)
(0.45, 0.95)
(0.60, 0.75)
};
\addplot+[mark=myominus*, draw=green, mark options={fill=yellow}] coordinates {
(0.10,0.15)
};
\fill[pink] (0,0) rectangle (0.95, 0.6);
\fill[cyan!55] (0,0.6) rectangle (0.95, 1.0);
\end{axis}
\end{tikzpicture}
\end{document}
2. 旧的。
\pgfdeclareplotmark{myominus}{
\node[inner sep=-1.4pt, circle, draw, fill=pink] {$-$};
}
\documentclass{article}
\usepackage{pgfplots}
\pgfplotsset{compat=newest}
\tikzset{
markstyle/.style={inner sep=-1.4pt, circle, draw, },
}
\pgfdeclareplotmark{myominus}{
\node[markstyle, fill=pink] {$-$};
}
\pgfdeclareplotmark{myoplus}{
\node[markstyle, fill=cyan!55]{$+$};
}
\begin{document}
\begin{tikzpicture}
\begin{axis}[
only marks,
]
\addplot+[mark=myominus] coordinates {
(0.20,0.05)
(0.25,0.60)
(0.55,0.40)
(0.90, 0.85)
};
\addplot+[mark=myoplus] coordinates {
(0.05,0.50)
(0.10,0.15)
(0.30,0.85)
(0.45, 0.95)
(0.60, 0.75)
};
\end{axis}
\end{tikzpicture}
\end{document}