Order columns in geom_bar in ggplot in R

Question

I'm trying to order my ggplot columns on a descending order but the code isn't working properly.

Here's the code:

Consolidado_novo %>%
 ggplot(aes(reorder(categoria, pesquisa_mensal), pesquisa_mensal)) + 
 geom_col(aes(x=categoria, y=pesquisa_mensal), fill="orange") + 
 labs(x = "Categorias",
   y = "Volume Mensal Pesquisas",
   title = "Análise KW Cosméticos")

The dataset:

	Keywords	categoria	Currency	pesquisa_mensal	mudanca_3meses
1	oxibenzona protetor solar	Protetor Solar	BRL	90	-57%
2	protetor solar com oxibenzona	Protetor Solar	BRL	30	25%
3	quais protetores solares tem oxibenzona	Protetor Solar	BRL	20	100%
4	avobenzona protetor solar	Protetor Solar	BRL	20	-67%
5	protetor solar sem oxibenzona	Protetor Solar	BRL	110	0%

Any hints?

Answer 1

See forcats::fct_reorder .

The example provided is not reproducible, but this should do the trick:

df <- data.frame(categoria = LETTERS[1:5],
                 pesquisa_mensal = c(20,100,110,90,50))

library(tidyverse)
df %>%
    mutate(categoria = fct_reorder(categoria, pesquisa_mensal, .desc = TRUE)) %>%
    ggplot(aes(categoria, pesquisa_mensal)) +
    geom_col()

^{Created on 2021-11-29 by the reprex package (v2.0.1)}