R help - Sep 2009 - change axis labels in persp

I need to change one of the axis produced by persp by giving it labels for the
tickmarks.
The dimension has months (a factor) so the default decimals don't look good.

The graph will finally become a pdf  or emf file to be embedded in a document,
so persp3d will not work, I think.

Thank you all.
Stephen

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