Meta data for marker size instead of colour

In pgfplots, is it possible to have meta data affect the size of markers instead of their colour?

I am referring to the set of commands described in section 4.4.10 about scatter plots in the pgfplots manual.

Here is one of the provided examples :

\begin{tikzpicture}
\begin{axis}
samples=50,scatter src=y]
{x^3};
\end{axis}
\end{tikzpicture}
-

Yes, by using the scatter/@pre marker code to adjust the value of mark size depending on \pgfplotspointmetatransformed (which by default contains the y value scaled to a range from 0 to 1000):

\documentclass{article}
\usepackage{pgfplots}

\begin{document}
\begin{tikzpicture}
\begin{axis}