A figure of a cube (or a 3D plot), along with an external image, is shown below (and its code is here). I'm trying to use dashed lines instead of solid lines in this figure. I have checked these links, link2, link3, and link4, but I need help to solve this problem.
\documentclass{standalone}
\usepackage{pgfplots}
\usetikzlibrary{3d,calc}
\begin{document}
\begin{tikzpicture}
\begin{axis}[
enlargelimits=false,
axis on top,
axis equal image,
xmin=0,xmax=4,
ymin=-1,ymax=1,
zmin=-1,zmax=1,
ylabel=$X$,zlabel=$Y$, %xlabel=$Z$,
view={-20}{30},
xtick={0, 4},
ticks = none,
clip = false,
]
\draw [black,dashed]
(axis cs:?) -- (axis cs:?) % ???
(axis cs:?) -- (axis cs:?);
\path (axis cs:0,0,0) coordinate (O) (axis cs:1,0,0) coordinate (X)
(axis cs:0,1,0) coordinate (Y) (axis cs:0,0,1) coordinate (Z)
(axis cs:4,0,0) coordinate (P)
[x={($(O)-(X)$)},y={($(O)-(Y)$)},z={($(Z)-(O)$)},
canvas is yz plane at x=0,transform shape]
(P) node{\includegraphics[width=2cm,height=2cm]{example-image-duck}};
\path (axis cs:0,0,0) coordinate (O) (axis cs:1,0,0) coordinate (X)
(axis cs:0,1,0) coordinate (Y) (axis cs:0,0,1) coordinate (Z)
(axis cs:0,0,0) coordinate (P)
[x={($(O)-(X)$)},y={($(O)-(Y)$)},z={($(Z)-(O)$)},
canvas is yz plane at x=0,transform shape]
(P) node{\includegraphics[width=2cm,height=2cm]{example-image-duck}};
%\draw[black, <->] ([xshift =-0.09cm] axis description cs:0, 0.2) -- node[left] {} ([xshift =-0.1cm] axis description cs:0, 0.66) node[font=\scriptsize, midway, left=-1mm] {\fontsize{6.5}{6.5}\selectfont$y$};
%\draw[black, <->] ([xshift =-.14cm] axis description cs:0.01, 0.19) -- node[left] {} ([xshift =-.39cm] axis description cs:0.35,- 0.01)node[font=\scriptsize, midway,below] {\fontsize{6.5}{6.5}\selectfont$x$};
\end{axis}
\end{tikzpicture}
\end{document}


dashedto the\drawcommands to get dashed lines. – cfr Dec 25 '23 at 03:40