[Tex/LaTex] PGFPLots remove the plot line in the legend

pgfplots

How can remove the plot line in the legend?

enter image description here

\documentclass[border=0.5mm,12pt]{standalone}

\usepackage{siunitx}                       % SI Package

\sisetup{%
         output-decimal-marker={,},
         table-format = 3.1%
        }

\usepackage{pgfplots}        % Grafici

\pgfplotsset{%
            mesh line legend/.style={legend image code/.code=\meshlinelegend#1},%
            /pgf/number format/use comma,%
            compat=newest,%
%            height=9cm,%
            width=12cm%
}

\begin{document}
\begin{tikzpicture}
\begin{axis}[%
legend pos=north west,
legend cell align=left,
no markers,
xmin=-0.3,
xmax=0.3,
ymin=0,
ymax=6,
yticklabel shift=2pt,
xticklabel shift=2pt,
point meta min={-0.3},
point meta max={0.3},
]
\addplot gnuplot[
    draw=none,
    shader=interp,
    id=DoG,
    samples=1000,
    domain=-0.3:0.3,
    y domain=0:1
]{((1/(sqrt(2*pi*0.08**2)))*exp(-(x-0)**2/(2*0.08**2)))}\closedcycle;
\addlegendimage{empty legend}\addlegendentry{$\mu=27,6\si{\second}$}
\addlegendimage{empty legend}\addlegendentry{$\sigma^2=0,01\si{\second}$}
\end{axis}
\end{tikzpicture}
\end{document}

Best Answer

To remove all the indicators, you can use the option legend style={empty legend} for the axis environment (I used some other code taken from the documentation to illustrate this; the example is compilable for everyone):

\documentclass[border=0.5mm,12pt]{standalone}
\usepackage{pgfplots}        % Grafici

\begin{document}

\begin{tikzpicture}
\begin{axis}[legend style={empty legend}]
\addplot[smooth,mark=*,blue] coordinates {
(0,2)
(2,3)
(3,1)
};
\addlegendentry{Case 1}
\addplot[smooth,color=red,mark=x]
coordinates {
(0,0)
(1,1)
(2,1)
(3,2)
};
\addlegendentry{Case 2}
\end{axis}
\end{tikzpicture}

\end{document}

enter image description here

If you only want to remove the indicator for a particular plot, tou can pass the empty legend option to the particular \addplot command:

\documentclass[border=0.5mm,12pt]{standalone}
\usepackage{pgfplots}        % Grafici

\begin{document}

\begin{tikzpicture}
\begin{axis}[legend style={at={(0.92,0.25)}}]

\addplot[smooth,mark=*,blue] coordinates {
(0,2)
(2,3)
(3,1)
};
\addlegendentry{Case 1}
\addplot[smooth,color=red,mark=x,empty legend]
coordinates {
(0,0)
(1,1)
(2,1)
(3,2)
};
\addlegendentry{Case 2}
\end{axis}
\end{tikzpicture}

\end{document}

enter image description here

Related Solutions

[Tex/LaTex] Pgfplots remove plot line

For that, you just need to add draw=none to the plot options.

I've made a couple of other improvements to your plot:

Instead of using two more axes to get the tick labels to appear on all sides, you can use extra x ticks and extra y ticks. You can set the ticklabel options for these extra ticks independently of those for the normal ticks, by setting extra x tick style={<options>}.

Instead of using an \addplot for drawing the vertical line, you can use

after end axis/.append code={
    \draw ({rel axis cs:0,0}-|{axis cs:0,0}) -- ({rel axis cs:0,1}-|{axis cs:0,0});
}

which will make sure that the line always spans the entire height of the plot, regardless of the axis limits.

You can change the xticklabels for the colorbar in a way similar to how you can change it for the extra x ticks, using colorbar style={xticklabels={...}}.

\documentclass{standalone}
\usepackage{pgfplots}
\begin{document}
\pgfplotsset{width=10cm}    

\begin{tikzpicture}
\makeatletter \newcommand{\pgfplotsdrawaxis}{\pgfplots@draw@axis} \makeatother
\pgfplotsset{axis line on top/.style={
 axis on top=false,
 after end axis/.append code={
    \pgfplotsset{axis line style=opaque,
      ticklabel style=opaque,
      tick style=opaque,
      grid=none}
    \pgfplotsdrawaxis}
  }
}
\pgfdeclarehorizontalshading{stefan}{50bp}{
color(0.00000000000000bp)=(violet);
color(8.33333333333333bp)=(blue);
color(16.66666666666670bp)=(cyan);
color(25.00000000000000bp)=(green);
color(33.33333333333330bp)=(yellow);
color(41.66666666666670bp)=(orange);
color(50.00000000000000bp)=(red)
}
\begin{axis}[
grid=major,
xmin=-0.3, xmax=0.3,
ymin=0, ymax=6,
point meta min={-0.3},
point meta max={0.3},
axis line on top,
tick style={thin,black},
xticklabel style={text height=1.5ex},
xticklabels={%
$-0.4$,
$-0.3$,
$-0.2$,
$-0.1$,
$\mu$,
$0.1$,
$0.2$,
$0.3$,
$0.4$},
extra x ticks={-0.4,-0.3,...,0.4},
extra x tick labels={%
$-0.4$,
$-0.3$,
$-0.2$,
$-0.1$,
$\mu$,
$0.1$,
$0.2$,
$0.3$,
$0.4$},
extra x tick style={
    xticklabel pos=right,
    xticklabel style={text depth=0pt}
},
extra y ticks={0,...,6},
extra y tick style={
    yticklabel pos=right
},
minor tick num=4,
xlabel=\large $x$,
ylabel=\large $f_{\mu,\sigma^2}(x)$,
colorbar horizontal,
colorbar style={
    xticklabels={%
        $-0.4$,
        $-0.3$,
        $-0.2$,
        $-0.1$,
        $\mu$,
        $0.1$,
        $0.2$,
        $0.3$,
        $0.4$
    },
    xticklabel style={text height=1.5ex}
},
no markers,
colormap={new}{color(0cm)=(violet);color(1cm)=(blue);color(2cm)=(cyan);color(3cm)=(green);color(4cm)=(yellow);color(5cm)=(orange);color(6cm)=(red)},
after end axis/.append code={
    \draw ({rel axis cs:0,0}-|{axis cs:0,0}) -- ({rel axis cs:0,1}-|{axis cs:0,0});
}]
\addplot gnuplot[
    shading=stefan,
    draw=none,
    shader=interp,
    id=DoG,
    samples=1000,
    domain=-0.3:0.3,
    y domain=0:1
]{((1/(sqrt(2*pi*0.00570275999999999)))*exp(-(x-0)**2/(2*0.00570275999999999)))}\closedcycle;
\end{axis}
\end{tikzpicture}

\end{document}

[Tex/LaTex] Put legend (pgfplots) below the plot

From section 4.8.5 of the manual, you can use every axis legend:

\pgfplotsset{every axis legend/.append style={
at={(0,0)},
anchor=north east}}

Code: (partially from manual )

\documentclass{standalone}
\usepackage{pgfplots}
 \pgfplotsset{width=7cm,compat=1.7}
 \pgfplotsset{every axis legend/.append style={
    at={(0,0)},
    anchor=north east}}
\begin{document}
\begin{tikzpicture}
\begin{axis}
\addplot coordinates {(0,0) (1,1)};
\addplot coordinates {(0,1) (1,2)};
\addplot coordinates {(0,2) (1,3)};
\legend{$l_1$,$l_2$,$l_3$}
\end{axis}
\end{tikzpicture}
\end{document}

Instead of the /.append style, it is possible to use legend style as in the following example. It has the same effect.

\documentclass{standalone}
\usepackage{pgfplots}
 \pgfplotsset{width=7cm,compat=1.7}
\begin{document}
\begin{tikzpicture}
\begin{axis}[
legend style={
at={(0,0)},
anchor=north east}]
\addplot coordinates {(0,0) (1,1)};
\addplot coordinates {(0,1) (1,2)};
\addplot coordinates {(0,2) (1,3)};
\legend{$l_1$,$l_2$,$l_3$}
\end{axis}
\end{tikzpicture}
\end{document}

enter image description here

As percusse mentioned in comment, you can fine tune the position by at={(axis description cs:0,-0.1)} as in:

\documentclass{standalone}
\usepackage{pgfplots}
 \pgfplotsset{width=7cm,compat=1.7}
\begin{document}
\begin{tikzpicture}
\begin{axis}[
legend style={
at={(0,0)},
anchor=north east,at={(axis description cs:0,-0.1)}}]
\addplot coordinates {(0,0) (1,1)};
\addplot coordinates {(0,1) (1,2)};
\addplot coordinates {(0,2) (1,3)};
\legend{$l_1$,$l_2$,$l_3$}
\end{axis}
\end{tikzpicture}
\end{document}

enter image description here

Best Answer

Related Solutions

[Tex/LaTex] Pgfplots remove plot line

[Tex/LaTex] Put legend (pgfplots) below the plot

Related Question