pgfplots - How to specify default line widths for plots and marker?

Question

I would like to specify different default line widths for plots and for markers (like x-marker). For the plot line width, I use:

\pgfplotsset{every axis plot/.append style={line width=1pt}}

Yet, this sets both the line widths of plots and markers. So, either I need an option which only applies to plot lines, or I need to change back the marker line width. Additional marker options are specified locally. Is there something like every marker/.append options?

Best Regards!

Answer 1

You can use the every mark style; however, due to the way this style is processed, you need to add it to every axis plot post to make sure all the keys are evaluated appropriately:

\documentclass{article} 
\usepackage{pgfplots}

\pgfplotsset{
  every axis plot/.append style={line width=0.8pt},
  every axis plot post/.append style={
    every mark/.append style={line width=1.6pt,draw=green,fill=red}
  }
}

\begin{document} 

\begin{tikzpicture}
\begin{axis}
\addplot coordinates {(-2,0) (-1,1) (0,0) (1,1) (2,0)};
\end{axis}
\end{tikzpicture}

\end{document}

The result:

Simply saying

\pgfplotsset{
  every axis plot/.append style={line width=0.8pt},
    every mark/.append style={line width=1.6pt,draw=green,fill=red}
}

in the above example won't have the desired effect.

An example using mark=x:

\documentclass{article} 
\usepackage{pgfplots}

\pgfplotsset{
  every axis plot/.append style={line width=0.8pt},
  every axis plot post/.append style={
    mark=x,
    every mark/.append style={line width=1.6pt,draw=red,scale=2}
  }
}

\begin{document} 

\begin{tikzpicture}
\begin{axis}
\addplot coordinates {(-2,0) (-1,1) (0,0) (1,1) (2,0)};
\end{axis}
\end{tikzpicture}

\end{document}