I am trying to change the width of the bars in the chart in the code below, using the width. However, I have not been successful. Can you help me?

The data used:

The code used:

grafico5=ggplot(analises, aes(x= reorder(Analises,  Total), y= Total))  
  geom_bar(stat = "identity", width = 0.5)   scale_y_continuous(limits = c(0,30), breaks = seq(0,30,5))  
  coord_flip()  xlab("Statistical analysis")   ylab("Number of articles")   
  theme(axis.title.x = element_text(colour = 'black', size = 16, family= "sans", face= "bold"), 
        axis.title.y = element_text(colour = 'black', size = 16, family= "sans", face= "bold"))  
  geom_col(position = position_dodge())  
  theme(axis.text.x = element_text(colour = 'black', size = 14, family= "sans"),
        axis.text.y = element_text(colour = 'black', size = 14, family= "sans"), 
        panel.background = element_rect(fill = "white"), axis.line = element_line(size = 0.5, colour = "black"))  
  geom_col(fill = gray(.3))

CodePudding user response：

You are successfully changing the width of the geom_bar(), but then on top you are plotting the same thing at the default width with geom_col(), twice. If we delete your geom_col() lines it works:

ggplot(analises, aes(x= reorder(Analises,  Total), y= Total))  
  geom_bar(stat = "identity", width = 0.5)  
  scale_y_continuous(limits = c(0,30),breaks = seq(0,30,5))  
  coord_flip()  
  xlab("Statistical analysis")   ylab("Number of articles") 

ggplot(analises, aes(x= reorder(Analises,  Total), y= Total))  
  geom_bar(stat = "identity", width = 0.25)  
  scale_y_continuous(limits = c(0,30),breaks = seq(0,30,5))  
  coord_flip()  
  xlab("Statistical analysis")   ylab("Number of articles")