\documentclass[a4paper]{article}

\usepackage{pgfplots}

\pgfplotsset{compat=1.4}

\begin{document}

\begin{tikzpicture}
	\begin{axis}[
		scale mode=scale uniformly,
		x={(1pt,0pt)},
		y={(-0.5pt,0.5pt)},
		z={(0pt,0.4pt)},
		xlabel=x,
		ylabel=y,
		zlabel=z,
	]

	\addplot3+[
		only marks,mark=*,
		nodes near coords,
		point meta={TeX code symbolic={
			\pgfmathprintnumberto[verbatim]{\pgfkeysvalueof{/data point/x}}\tempx
			\pgfmathprintnumberto[verbatim]{\pgfkeysvalueof{/data point/y}}\tempy
			\pgfmathprintnumberto[verbatim]{\pgfkeysvalueof{/data point/z}}\tempz
			\edef\pgfplotspointmeta{(\tempx,\tempy,\tempz)}}%
		}
	]
	coordinates {
		(0,0,0) (1,0,0) (0,1,0) (0,0,1)
	};
		
	\end{axis}
\end{tikzpicture}

\begin{tikzpicture}
	\begin{axis}[
		scale mode=scale uniformly,
		x={(1pt,0pt)},
		y={(0pt,0.1pt)},
		xlabel=x,
		ylabel=y,
		zlabel=z,
	]

	\addplot+[
		only marks,mark=*,
		nodes near coords,
		point meta={TeX code symbolic={
			\pgfmathprintnumberto[verbatim]{\pgfkeysvalueof{/data point/x}}\tempx
			\pgfmathprintnumberto[verbatim]{\pgfkeysvalueof{/data point/y}}\tempy
			\edef\pgfplotspointmeta{(\tempx,\tempy)}}%
		}
	]
	coordinates {
		(0,0) (1,0) (0,1) 
	};
		
	\end{axis}
\end{tikzpicture}

\end{document}

