我想重新对齐/偏移条形图的 x 轴和相关的刻度线。这应该很简单,但我无法找到答案。下面是一些包含 24 个类别的示例数据。
xval = c(1:24)
count = c(0.03,0.03,0.08,0.06,0.11,0.4,0.3,0.5,0.5,0.6,0.4,0.1,0.1,0.4,0.2,0.1,0.06,0.05,0.03,0.02,0.01,0.03,0.01,0.02)
df = as.data.frame(cbind(xval, count))
我可以使用下面的代码轻松地生成一个带有刻度线的条形图,该条形图在条形中点对齐:
mp <- barplot(df$count, space=0, axes=FALSE)
axis(side=2, pos=-0.2)
axis(side=1, at =mp, labels=df$xval)
我还可以使用以下方法移动整个 x 轴(标签和刻度)以与条的外部对齐(尽管现在无法将最后一个条合并到轴中):
axis(side=1, at =mp-0.5, labels=df$xval)
虽然我希望 x 轴和相关的刻度线与条形边界对齐(即条形图两侧而不是中心的刻度线),但我希望 x 轴标签保持在条形中点. 有没有简单的方法来实现这一目标?