[Rd] contour lines in filled.contour

[Romain Francois]

Hi,

When I want to draw contour lines on top of a filled.contour plot, I can 
use the plot.axes arg, such as in : 

filled.contour(volcano, color = terrain.colors, asp = 1,
  plot.axes=contour(volcano, add=T) )

but then the lines are computed twice. Is it possible to add an option 
to filled.contour such that the lines are drawn internally when computed 
in do_filledcontour. The code is in src/main/plot3d.c in the current 
R-devel. I would like to do it, but I don't understand the internals.

Romain


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+---------------------------------------------------------------+
| Romain FRANCOIS - http://francoisromain.free.fr               |
| Doctorant INRIA Futurs / EDF                                  |
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