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自定义标记（pgfdeclareplotmark），以颜色作为参数

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自定义标记（pgfdeclareplotmark），以颜色作为参数

我正在尝试自定义散点图标记的形状和颜色。当我对颜色进行硬编码（例如红色）时，Everythink 有效：

\documentclass{article}
\usepackage{pgfplots}
\usepackage{xcolor}


\newcommand{\myStyle}{%
% define marker shape here
    \tikzset{marker/.style={circle, inner sep=1.5pt, fill=red}}
}

\pgfdeclareplotmark{mymarker}{%
    \node[marker] {};
}

\begin{document}

\begin{tikzpicture}

\myStyle

\begin{axis}[]

\addplot[only marks, mark=mymarker, smooth] coordinates {
    (3, 0.5)
    (4, 0.6)
    (5, 0.4)
};

\end{axis}
\end{tikzpicture}

但是，我很难为每个图单独设置颜色。我可以定义

\newcommand{\myStyle}[1]{%
% define marker shape here
    \tikzset{marker/.style={circle, inner sep=1.5pt, fill=#1}}
}

但我想我必须指定块内的颜色

\pgfdeclareplotmark{mymarker}{%
        \node[marker] {};
    }

更改每个 addplot 命令的颜色。但是，我不确定如何将颜色作为参数传递给命令 \pgfdeclareplotmark。

答案1

编辑1

在此处输入图片描述

\documentclass{article}
\usepackage{pgfplots}
\usepackage{xcolor}

\pgfplotsset{compat=1.17} % Ensure compatibility with pgfplots

% Declare macro to create customized markers with a specific color
\newcommand{\declareCustomMarker}[2]{%
    \pgfdeclareplotmark{#1}{%
        \node[circle, inner sep=1.5pt, fill=#2] {};
    }
}

\begin{document}

\begin{tikzpicture}

\begin{axis}[]

% Declare markers with different colors
\declareCustomMarker{mymarker-blue}{blue}
\declareCustomMarker{mymarker-green}{green}

% Use the blue marker for this plot
\addplot[only marks, mark=mymarker-blue, smooth] coordinates {
    (3, 0.5)
    (4, 0.6)
    (5, 0.4)
};

% Use the green marker for this plot
\addplot[only marks, mark=mymarker-green, smooth] coordinates {
    (2, 0.7)
    (4, 0.8)
    (6, 0.9)
};

\end{axis}
\end{tikzpicture}

\end{document}

像这样 ？

在此处输入图片描述

\documentclass{article}
\usepackage{pgfplots}
\usepackage{xcolor}

\pgfkeys{/tikz/.cd,
    marker color/.store in=\markercolor,
    marker color=red % default color
}

\newcommand{\myStyle}[1]{%
    \pgfkeys{/tikz/marker color=#1} % set the marker color
    % define marker shape here
    \tikzset{marker/.style={circle, inner sep=1.5pt, fill=\markercolor}}
}

\pgfdeclareplotmark{mymarker}{%
    \node[marker] {};
}

\begin{document}

\begin{tikzpicture}

\myStyle{red} % <= marker color here

\begin{axis}[]

\addplot[only marks, mark=mymarker, smooth] coordinates {
    (3, 0.5)
    (4, 0.6)
    (5, 0.4)
};

\end{axis}
\end{tikzpicture}

\end{document}

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