[R-SIG-Mac] differences between quartz and pdf

[Denis Chabot]

Hi,

I have never made anything to change the fonts used in quartz and pdf  
devices, so I assume my settings are like everyone else.

I was trying to position text carefully on a graph within a function.  
However the result was different when I plotted to a quartz device  
than to a pdf device.

My function used par("cxy") to compute where to place text. This is  
indeed part of the problem as calling it when a quartz device is open  
yields (0.1928571, 0.3857143), whereas for a pdf device I get  
(0.387766, 0.6151899).

Is there a way to set R so that when no font size or family is  
specified, the same font/size is used by both the pdf and quartz  
devices?

For now I've written 2 versions of my function depending on which  
device I want to output to, which is not a great solution.

Thanks in advance,

Denis Chabot