ggplot循环中依赖于大小写的绘图大小缩放

coord_fixed 和 expand_limits . 不幸的是,不同的绘图的y轴不同,因此缩放设置不适合所有情况,即文本被切断和/或轴被压缩。让我举例说明:

period <- c(rep("A",4),rep("B",4))
group <- rep(c("C","C","D","D"),2)
size <- rep(c("E","F"),4)
value <- c(23,29,77,62,18,30,54,81)
df <- data.frame(period,group,size,value)

library(ggplot2)

for (i in levels(df$group)) 
{
p <- ggplot(subset(df, group==i), aes(x=size, y=value,  fill = period)) + 
     geom_bar(position="dodge", stat="identity", show.legend=F) +
     geom_text(data=subset(df, group==i), aes(x=size, y=value,label=value),
               size=10, fontface="bold", position = position_dodge(width=1),vjust = -0.5) +
     expand_limits(y = max(df$value)*0.6) + 
     coord_fixed(ratio = 0.01)

ggsave(paste0("yourfilepath",i,".png"), width=7.72, height=4.5, units="in", p)
}

坐标固定 和 扩展\u限制 expand_limits(y = max(df$value * ifelse(df$value <= 50, 0.6, 1))) 但这并不是我所希望的那样。如有任何建议,我们将不胜感激!