[R] problem with math expressions in grid graphics when using line breaks (\n)

[Mark Heckmann]

I want to plot a multiline annotation including a mathematical expression using grid graphics (grid.text).
This works fine for a single line, but the math expression is misplaced when I insert a line break ("\n" escape sequence):

grid.text(expression(paste("Some words here\n more ", sigma)))

Does someone have an idea how to fix that?
TIA!

Mark
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Mark Heckmann
Blog: www.markheckmann.de
R-Blog: http://ryouready.wordpress.com