How do you order the fill-colours within ggplot2 geom_bar

Question

[j_weld]

I am calling the ggplot function

[GenoMax]

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Answer 1

[rpolicastro]

You need to set the factor order for the Genus variable.

level_order <- c("Gilliamella", "Snodgrassella", "Bifidobacterium", "Lactobacillus", "Frischella")
data$Genus <- factor(data$Genus, levels=level_order)

The order might be backwards with the above code. If so change fill=Genus to fill=forcats::fct_rev(Genus) in your ggplot command.