I may be going about this the wrong way, but I'm trying to highlight a specific point on a graph using tikz and pgfplots. Currently I'm using a node to draw a circle round the point - however, I would ideally like to change thus to something more like an 'x'.
My code is as follows, and any help would be immensely appreciated.
\documentclass[1cm]{standalone}
\usepackage{pgfplots}
\begin{document}
\begin{tikzpicture}
\begin{axis}[
axis lines = left,
xlabel = {Good 1},
ylabel = {Good 2},
xmin=0,
xmax=450,
ymin=0,
ymax=450,
ytick={0,100,200,300,400,500},
scaled y ticks = false,
]
\addplot[] file[] {jointppf.dat};
\node[draw,circle] ( ) at (250,300) {};
\end{axis}
\end{tikzpicture}
\end{document}
\node at (250,300) {$\times$};
and/or\addplot [mark=x] coordinates {(250,300)};
gives what you after.