减少小节中图例区域的大小 [英] Reduce size of legend area in barplot

问题描述

在这个情节中，我无法缩小图例的大小.有人可以帮我吗?我希望它显示在右上角，但不超过绘图区域高度的20％

I can't reduce the size of the legend in this plot. Could someone help me out? I want it to appear topright, but with no more than 20% of the height of plot area

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)

推荐答案

cex参数将为您做到这一点.

The cex parameter will do that for you.

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)

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