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Order Bars in ggplot2 bar graph（16个答案）
5天前关闭。
我花了几个小时在www.example.com上搜索重新排序一个分组条形图stackoverflow.com，但我没有找到我要找的答案。我想改变条形图和图例的顺序，按顺序打印“before”、“during”和“after”，但R一直按字母顺序打印因子，就像“after”在“during”之前一样，不知道如何修复它。
如果有人能帮助我，我会很感激！
这是我想要改变的R显示顺序。

下面是我的代码：

df <- data.frame(time = c("after","before","during","before","after","before","during","after","after","during", "during","after","before","during","before"),
variable = c("granny", "red del", "other", "golden", "star", "granny", "red del", "other", "golden", "star", "granny", "red del", "other", "golden", "star"),
value = c(34,66,7,12,99,35,66,82,55,48, 27,55,82,42,26))

df$time = as.factor(df$time)
df$variable = as.factor(df$variable)

ggplot(df, aes(x = variable, y = value, fill = time)) + 
geom_bar(position='dodge', stat='identity') +
theme_minimal() +
labs(x=' ', y=' ', title=' ') +
theme(plot.title = element_text(hjust=0.5, size=20, face='bold')) +
theme_bw() + 
theme(axis.line = element_line(color='black'),
plot.background = element_blank(),
panel.grid.minor = element_blank(),
panel.grid.major = element_blank())