需要帮助对齐条形图上的标签.
这是可重现的代码:
library(ggmap)
library(ggplot2)
library(gganimate)
library(readxl)
library(animation)
mydf1<-structure(list(year = c(1994, 1995, 1997, 1997, 1998, 1998, 2000,
2000, 2001, 2001, 2002, 2002, 2004, 2005, 2005, 2006, 2006, 2007,
2007, 2008, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2015,
2016, 2016, 2016, 2016), N = c(3L, 1L, 1L, 4L, 1L, 4L, 1L, 2L,
1L, 5L, 1L, 2L, 1L, 1L, 4L, 1L, 3L, 1L, 2L, 1L, 5L, 2L, 2L, 6L,
4L, 1L, 1L, 2L, 1L, 1L, 3L, 4L, 1L), channels = c(86, …