How to remove/ delete the space between bars and the panel in ggplot2?

Question

The following code produces the attached plot. How to get rid of/ remove the regions marked in RED?

    df <- data.frame(trt = c("a", "b", "c"), outcome = c(2.3, 1.9, 3.2))
    ggplot(df, aes(trt, outcome)) +
    geom_col()

I modified the code as follows but no change.

df <- data.frame(trt = c("a", "b", "c"), outcome = c(2.3, 1.9, 3.2))
   
ggplot(df, aes(trt, outcome)) +
   geom_col() + 
   theme(
    plot.margin = unit(c(0,0,0,0), "mm")
  )

Ronak Shah · Answer 1 · 2020-08-14T05:47:34.827

4

You can set expand to 0 on both the axis :

library(ggplot2)
df <- data.frame(trt = c("a", "b", "c"), outcome = c(2.3, 1.9, 3.2))

ggplot(df, aes(trt, outcome)) +
  geom_col() + 
  scale_x_discrete(expand = c(0,0)) + 
  scale_y_continuous(expand = c(0,0))

edited Aug 14 '20 at 05:47

answered Aug 14 '20 at 05:43

Ronak Shah

377,200
20
156
213

i never know if its expand = c(0, 0) or expand = F. They both seem to work? – morgan121 Aug 14 '20 at 05:44
Yes, both of them seem to work the same way in this case. – Ronak Shah Aug 14 '20 at 05:46

score 1 · Answer 2 · answered Aug 14 '20 at 05:42

1

the margin option is for outside the plotting window. To change within the plotting window try this:

ggplot(df, aes(trt, outcome)) +
  geom_col() + 
  coord_cartesian(expand = F)

answered Aug 14 '20 at 05:42

morgan121

2,213
1
15
33

How to remove/ delete the space between bars and the panel in ggplot2?

2 Answers2