r - Unable to change the global pointsize for lattice displays -

r - Unable to change the global pointsize for lattice displays -

i need produce series of pdf plots lattice bundle in r, text pointsize mandated journal in published.

following give-and-take here,, can alter pointsize on plot plot basis:

library(lattice) trellis.device("pdf", pointsize=30) trellis.par.set(fontsize = list(text = null)) xyplot(1:10 ~ 1:10) dev.off()

this yields next plot:

but seek set global option:

library(lattice) lattice.options(default.theme = list(fontsize = list(text = null))) trellis.device("png", pointsize=30) xyplot(1:10 ~ 1:10) dev.off()

and doesn't yield same results:

so how can alter global pointsize lattice plots?

r lattice