减少条形图中图例区域的大小

Question

我不能减少这个情节中的图例大小.有人可以帮帮我吗？我希望它看起来是正确的,但不超过绘图区域高度的20%

a <- c(3, 2, 2, 2, 1, 2 )
barplot(a, beside = T,
col = 1:6, space = c(0, 2))
legend("topright", legend = c("a", "b", "c", "d", "e", "f"), fill = 1:6, ncol = 2)

Answer 1

该cex参数将为您执行此操作.

a <- c(3, 2, 2, 2, 1, 2 )
barplot(a, beside = T,
        col = 1:6, space = c(0, 2))
legend("topright", 
       legend = c("a", "b", "c", "d", "e", "f"), 
       fill = 1:6, ncol = 2,
       cex = 0.75)