在ggplot条形图中排序日期

ordering dates in ggplot bar plot

我有一个生日数据框,想按最快日期到最远日期排序。他们似乎不想按日期顺序绘制图表。

这是数据框:

df <- data.frame(name = c("Sara", "Joe", "Matt", "Katie", "Ryan", "Sam"), date = c("2003-03-27", "2004-05-16", "2001-02-02", "2004-05-16", "2002-09-03", "2003-1-17"))

到目前为止我尝试过的是:

ggplot(df[order(df$date),]) +  
geom_bar(aes(x=name, y=date), color = 'black', fill = 'blue', stat = 'identity')

尝试:

df$name <- with(df, factor(name, levels = name[order(date, name)]))

ggplot(df) +  
  geom_bar(aes(x=name, y=date), color = 'black', fill = 'blue', stat = 'identity')

编辑:

解决方法在这里https://github.com/tidyverse/ggplot2/issues/3462

ggplot(tt, aes(x = data, y = value, colour = variable)) + scale_y_datetime(breaks = tt$value, date_labels = "%H:%M:%S") + geom_point()