R help - May 2012 - Contour lines within a spplot

Hi all,

As you know, spplot function of sp package is very powerful and even allows to
superimpose contour lines with the option 'contour=TRUE'. The color of
the contour line can be changed with the 'col' option. I'd like to
know if it possible to improve on this:


1) changing the color of the contour line to more than one color, based on the
values of the spplot variable (for example, a scale of blue colors).

2) if option 1) is possible, is it possible to fill the areas between two nearby
color lines with a color equal to the color line? (As for function
filled.contour(), but inside the spplot).


Thanks!!!

Nicola
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