# Regular tick marks set to draw=none, but extra tick marks also not being drawn?

In the following code

\documentclass{article} \usepackage{tikz} \usepackage{pgfplots} \pgfplotsset{compat=1.17} \definecolor{gold}{RGB}{255, 184, 0}

\begin{document}

\begin{tikzpicture}   \begin{axis}[
axis lines=center,
grid=major,
xmin=-3,
xmax=3,
ymin=-3,
ymax=3,
width=7cm,
height=7cm,
xticklabels={,,},
yticklabels={,,},
xtick style={draw=none},
ytick style={draw=none},
extra x ticks={-1,1},
extra x tick labels={,},
extra x tick style={color=black,grid=none},
set layers = standard]

\pgfonlayer{axis background}
\fill[gold!40] (-3,0) -- (3,0) -- (3,3) -- (-3,3);
\endpgfonlayer

\draw[green, thick] (-3,0) -- (-1,0);
\draw[green, thick] (1,0) -- (3,0);
\draw[blue, thick] (-1,0) -- (1,0);

\node (z3) at (2,1) {\small \textbullet};
\node at (1.5,1.5) {\scriptsize $\varphi_2^{-1}\circ\varphi_1^{-1}(z_3)$};   \end{axis}    \end{tikzpicture}

\end{document}


I want there to be two tick marks between the blue and green portions on the x-axis. If I comment out the line xtick style={draw=none}, then I get all the x tick marks showing up, which I don't want:

For reference, I've looked at Hide tick numbers in a TikZ/PGF axis environment. (taught me to use draw=none) and Remove a tick (pgfplots) (if I want to put draw=none in the extra ticks I can, but here I want to put draw=none on the regular ticks and only see the extra ticks).

You need to set major x tick style={draw=black} inside the extra x tick styleoption, then it works. See also this answer.

\documentclass{article} \usepackage{tikz} \usepackage{pgfplots} \pgfplotsset{compat=1.17} \definecolor{gold}{RGB}{255, 184, 0}

\begin{document}

\begin{tikzpicture}   \begin{axis}[
axis lines=center,
grid=major,
xmin=-3,
xmax=3,
ymin=-3,
ymax=3,
width=7cm,
height=7cm,
xticklabels={,,},
yticklabels={,,},
x tick style={draw=none},
y tick style={draw=none},
extra x ticks={-1,1},
extra x tick labels={-1,1},
extra x tick style={major x tick style={draw,black},grid=none},
set layers = standard]

\pgfonlayer{axis background}
\fill[gold!40] (-3,0) -- (3,0) -- (3,3) -- (-3,3);
\endpgfonlayer

\draw[green, thick] (-3,0) -- (-1,0);
\draw[green, thick] (1,0) -- (3,0);
\draw[blue, thick] (-1,0) -- (1,0);

\node at (1.5,1.5) {\scriptsize $\varphi_2^{-1}\circ\varphi_1^{-1}(z_3)$};   \end{axis}    \end{tikzpicture}