刻度线长度由tck=参数控制,需要通过其scales=参数传递给更高级别的绘图函数。设置会tck=0抑制刻度线的绘制,而将其设置为负数会导致刻度线在图形内部绘制:
library(lattice)
xyplot(1:10 ~ 1:10,
scales = list(y = list(tck=0),
x = list(tck=c(-1, 0))))
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