如何从hclust树状图中调整轴标签的余量

Question

我有以下代码：

hc <- hclust(dist(USArrests), "ave")
plot(hc)
plot(hc, hang = 0.5, sub="", xlab ="")

产生以下情节：

如上图所示。 我怎样才能push他们的高度标签push 得更进一步？

Answer 1

这可以用做mgp参数par ：

par(mgp=c(2, 1, 0))
plot(hc, hang = 0.5, sub="", xlab ="")

par(mgp=c(1, 1, 0))
plot(hc, hang = 0.5, sub="", xlab ="")

另外两个参数控制刻度线和刻度位置，例如：

par(mgp=c(2, 3, 2))
plot(hc, hang = 0.5, sub="", xlab ="")

Answer 2

解决方法可能是删除ylab，只需将其作为文本添加到适当的坐标，如下所示：

plot(hc, hang = 0.5, sub="", xlab ="", ylab = "")
text(0, -50, "Height", srt = 90)

Answer 3

也许使用mtext可能有所帮助

plot(hc, hang = 0.5, sub="", xlab ="", ylab = "")
mtext(text = "test", side = 2, line = 2)

产生这个阴谋

side = 2定义左侧，而line表示“偏心”。 您可以使用line和adj参数（以及更多）来执行更多操作：

plot(hc, hang = 0.5, sub="", xlab ="", ylab = "")
mtext(text = "t2", side = 2, line = 2, col = "blue")
mtext(text = "t1", side = 2, line = 1, col = "blue")
mtext(text = "t0", side = 2, line = 0, col = "blue")
mtext(text = "tlow", side = 2, line = 0, col = "blue", adj = 0)

得出以下情节