[Tex/LaTex] Remove border around area legend rectangle

Question

I have a legend with the option area legend to draw a little rectangle in the legend instead of a line segment. There is a border around the rectangle I would like to either remove or make the same color as the actual rectangle.
How is this done?

Answer 1

To hide the border both in the plot and in the legend, you should use draw opacity=0 in the \addplot options instead of draw=none:

\documentclass[border=5mm] {standalone}
\usepackage{pgfplots}

\begin{document}

\begin{tikzpicture}
\begin{axis}
\addplot [fill=yellow,draw opacity=0, area legend] coordinates {(0,0) (2,1) (4,1)} \closedcycle;
\addlegendentry{Plot}
\end{axis}
\end{tikzpicture}

\end{document}