第一种方法:
尝试在绘制图例之前设置字体大小。
x <- y <- rnorm(100, 0, 1)
plot(x, y, type = "n")
## here you set the font size default to `x`, in this example 0.5
## save defaults in `op`
op <- par(cex = 0.5)
legend("topright", legend = "foo legend", pch = 1, bty = "n")
## here you set cexto 1.5
## save new defaults in `op`
op <- par(cex = 1.5)
legend("topright", legend = "foo legend", pch = 1, bty = "n")
第二种方法:
将pt.cex 参数保持为1,同时为cex inside 图例调用尝试不同的值。记得删除op。
x <- rnorm(100, 10, 4)
y <- rnorm(100, 10, 4)
plot(x, y, type = "n")
## I tried to feed cex with 1.5 and 0.5. The font size changes while the points remain unchanged.
legend("topleft", "Legend", cex=0.5, pch=1, pt.cex = 1)