如何使用geom_text在堆积条形图中显示值？

概述我想显示堆积条中的百分比数字.但是,一组的百分比非常低.两个值彼此重叠.我改为’postion =’identity’.它仍然无法工作…..任何想法？ x4.can.m <- structure(list(canopy = structure(c(1L, 2L, 3L, 1L, 2L, 3L, 1L, 2L, 3L, 1L, 2L, 3L, 1L, 2L, 3L), .Label = c("0% 我想显示堆积条中的百分比数字.但是,一组的百分比非常低.两个值彼此重叠.我改为’postion =’IDentity’.它仍然无法工作…..任何想法？

x4.can.m <- structure(List(canopy = structure(c(1L,2L,3L,1L,3L),.Label = c("0%","1 to 84%","85% +"),class = "factor"),YearQuarter = structure(c(1L,4L,5L,5L),.Label = c("2011-09-01","2011-12-01","2012-03-01","2012-06-01","2012-09-01"),value = c(0.51,0.01,0.48,0.52,0.47,0.53,0.57,0.41,0.61,0.38)),.names = c("canopy","YearQuarter","value"),row.names = c(NA,-15L),class = "data.frame")x4.can.bar <- ggplot(data=x4.can.m,aes(x=factor(YearQuarter),y=value,fill=canopy)) + geom_bar(stat="IDentity",position = "stack",ymax=100)x4.can.bar+scale_y_continuous(formatter='percent')+ labs(y="Percentage",x="Year Quarter") +  geom_text(aes(label =paste(round(value*100,0),"%",sep="")),size = 3,hjust = 0.5,vjust = 4,position ="IDentity")

解决方法 一种解决方案是将堆栈栏更改为闪避

x4.can.bar <- ggplot(data=x4.can.m,fill=canopy)) +                     geom_bar(stat="IDentity",position = "dodge",ymax=100) +             geom_text(aes(label =paste(round(value*100,sep=""),ymax=0),position=position_dodge(wIDth=0.9),vjust=-0.25)x4.can.bar

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