how invert the order of factors in ggplot

Asked Mar 09 '22 at 13:58

Active Mar 09 '22 at 13:58

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I am trying to reverse the order of the fill factor on the graph, i.e. The 0.5-1 class, must be at the top of the bar.. and then in descending order

gruppo <- c("TM", "TM","TM","TM", "PM", "PM","PM","PM")
valor <-c(1,4,237,3433,1,3,240,3700)
class <- c(">1", "0.5-1", "0.1-0.5", "<0.1")
df <- data.frame(Trait=gruppo, n_windows=valor, var_exp =class)
library(ggplot2)
ggplot(df, aes(x= Trait, y=n_windows, fill=var_exp)) + geom_bar(stat= "identity")

I tried the reorder function, but don't work

ggplot(df, aes(x=reorder(Trait, y=n_windows), fill=var_exp)) + geom_bar(stat= "identity")

asked Mar 09 '22 at 13:58

Johanna Ramirez

You can reverse the order by doing: `scale_fill_discrete(limits=rev)` – Maël Mar 09 '22 at 14:04
Mael this command change the colors , but not the order – Johanna Ramirez Mar 09 '22 at 14:16
1

@Rfanatic the y-axis is replaced by the information of var_exp – Johanna Ramirez Mar 09 '22 at 15:28
2

Try this ggplot(df, aes(x= Trait, y=n_windows, fill=var_exp)) + geom_bar(stat="identity", position = position_stack(reverse = TRUE)) – Rfanatic Mar 09 '22 at 16:36

how invert the order of factors in ggplot

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