Some (but not all) fonts work only in a bitmap device, not pdf

[wch]

Some (but not all) fonts work only in a bitmap device, not pdf

[Lukas-1]

I have a similar problem with Calibri and the postscript device.

The png device works fine. The postscript device either gives me irregularly spaced letters, or an error like the following:

Error in mtext(unit_text, at = par("usr")[1] - (par("usr")[2] - par("usr")[1])/30, :
metric information not available for this device

I hope that there is a solution to this issue with certain devices and certain fonts not working...

sessionInfo()

R version 3.1.1 (2014-07-10)
Platform: x86_64-w64-mingw32/x64 (64-bit)

attached base packages:
[1] stats graphics grDevices utils datasets methods base

other attached packages:
[1] Rttf2pt1_1.3.1 extrafont_0.16 RColorBrewer_1.0-5

loaded via a namespace (and not attached):
[1] extrafontdb_1.0 tools_3.1.1