如何使 y 轴上的线彼此更靠近

Question

数据为：

df <- structure(list(vec = c("PC", "DEFAULT", "INFORMED"), mean = c(1.34944359241928, 
                                                          1.36249329506777, 1.34671188869646), sd = c(0.57779881866326, 
                                                                                                      0.537279303541924, 1.53585580464849), min = c(0.196903771571785, 
                                                                                                                                                    0.28781509871908, -1.66860228474139), `0.5quant` = c(1.35295469982876, 
                                                                                                                                                                                                         1.36643973099316, 1.34687516700723), max = c(2.48177705326348, 
                                                                                                                                                                                                                                                      2.41483607230639, 4.36109982194179), mode = c(NA_real_, NA_real_, 
                                                                                                                                                                                                                                                                                                    NA_real_), kld = c(1.9807860333589e-08, 2.97333113261951e-08, 
                                                                                                                                                                                                                                                                                                                       3.91753938449056e-10), ID = 1:3), row.names = c(NA, -3L), class = "data.frame")

我想将其绘制为：

yaxis <- c("Ppppppppp ppppppp 
pppp pp pppppp 
(ppp)", "Uuuuuuuuu uuuuu", "Iiiiiii iiiii 
       ii Iiiiii (iiii)")

myplot <- ggplot(data = df, aes(x = mean, y = ID)) +
  geom_point() +
  geom_errorbarh(aes(xmin = min, xmax = max), height = .1) + geom_vline (xintercept = 0, linetype = 2) + scale_x_continuous(breaks=seq(-4,4.5,0.5)) + scale_y_continuous(breaks = 1:3, labels = yaxis)

我的问题如下：

1. 我想减少 y 轴上“i”、“u”和“p”之间的距离：换句话说，白线必须消失（相应地，我在图表中用红色标记将它们划掉） ），并且必须将三条黑线（可信/置信区间）放置在 y 轴上更靠近的位置。

2. 我想将标签中的文本放在 y 轴的中心（我用蓝色标记将它们圈起来）。换句话说，每个标签中的文本必须居中。

伙计们，你能帮我解决这个问题吗？

Answer 1

将映射到

y

的变量转换为因子，并使用

hjust= .5

将轴文本居中。此外，我添加了换行符

"\n"

将标签分成多行。

library(ggplot2)

yaxis <- c(
  "Ppppppppp ppppppp\npppp pp pppppp\n(ppp)",
  "Uuuuuuuuu uuuuu",
  "Iiiiiii iiiii\nii Iiiiii (iiii)"
)

ggplot(data = df, aes(x = mean, y = factor(ID))) +
  geom_point() +
  geom_errorbarh(aes(xmin = min, xmax = max), height = .1) +
  geom_vline(xintercept = 0, linetype = 2) +
  scale_x_continuous(breaks = seq(-4, 4.5, 0.5)) +
  scale_y_discrete(labels = yaxis) +
  theme(axis.text.y = element_text(hjust = .5))