如何更改“trellis”对象的轴标题字体大小?

你可以改变 trellis 对象 lattice 使用包装 trellis.par.get 和 trellis.par.set

library(lattice)
# simulation
data("quakes")
Depth <- equal.count(quakes$depth, number=8, overlap=.1)
trellis <- xyplot(lat ~ long | Depth, data = quakes, main = "Large Font Title")


# change title font size
mt = trellis.par.get("par.main.text")
mt$cex = 2
trellis.par.set("par.main.text",mt)
trellis
class(trellis)