Adding Some Space Between the X-Axis and the Bars, in Ggplot

Adding some space between the x-axis and the bars, in ggplot

You could use the limits in scale_y_continuous to indicate what range you want to show. NA in the limits is 'use the default'. Now, normally that would take the away both bars because they are out-of-bounds (oob), but you could fix that by setting the oob argument of the scales to squish, which is a function found in the scales package.

library(scales)

ggplot(df, aes(x,y)) + 
  geom_col() +
  scale_y_continuous(limits = c(1, NA), oob = squish)

Space between bar chart with day/week/month in x axis in R

You could add colour = "white" for the border around the bars:

library(tidyverse)

df <- tibble(x = rep(1:100, 5)) 

df |> 
  ggplot(aes(x)) +
  geom_histogram()
#> 'stat_bin()' using 'bins = 30'. Pick better value with 'binwidth'.

df |> 
  ggplot(aes(x)) +
  geom_histogram(colour = "white")
#> 'stat_bin()' using 'bins = 30'. Pick better value with 'binwidth'.

^{Created on 2022-05-17 by the reprex package (v2.0.1)}

How to increase the space between grouped bars in ggplot2?

What's about?
1. Use geom_col instead of geom_bar as recommended.
2. specify suitable position_dodge(0.5) and width=0.5 and 3. remove unnecessary code.

ggplot(d, aes(x=Measure, y=mean, fill=Condition)) + 
  geom_col(colour="black",width=0.5,    
           position=position_dodge(0.5)) +
  geom_errorbar(aes(ymin=mean-se, ymax=mean+se),
                position=position_dodge(0.5), width=.25)+
  scale_x_discrete(limits = c("Interest", "Value","Effort","Difficulty","Competence","JOL")) +
  scale_y_continuous(breaks=seq(0,7,by =1),limits = c(0,7), expand = c(0,0))+
  scale_fill_manual(values=c("#ffcc00ff","#ffffff"), name = "Condition") + 
  labs(x="", y = "Rating (0-7)")+
  theme_minimal() +
  theme(axis.line = element_line(color="black"),
        axis.ticks = element_line(color="black"),
        panel.border = element_blank())

ggplot2 bar plot, no space between bottom of geom and x axis keep space above

The R documentation includes a new convenience function called expansion for the expand argument as the expand_scale() became deprecated as of ggplot2 v3.3.0 release.

ggplot(mtcars) +
  geom_bar(aes(x = factor(carb))) + 
  scale_y_continuous(expand = expansion(mult = c(0, .1)))

Adding space between bars in ggplot2

Is this what you want?

hist + geom_bar(width=0.4, position = position_dodge(width=0.5))

• width in geom_bar determines the width of the bar.
• width in position_dodge determines the position of each bar.

Probably you can easily understand their behavior after you play with them for a while.

Spacing between x-axis groups bigger than within group spacing geom_col

Try using a combination of position=position_dodge(width=...) and width=...

For example:

ggplot(df, aes(fill = cyl, x = am, y = mpg)) +
geom_col(position = position_dodge(width = 0.9), width=0.8) +
theme_bw()

The width() command gives the displayed width of individual bars, while the position(width=) gives the space that is reserved for the bars.

The difference between the two values gives the space between bars within a group, while 1 - position_dodge(width=) gives the space between the groups.

How to increase the space between the bars in a bar plot in ggplot2?

You can always play with the width parameter, as shown below:

df <- data.frame(x=factor(LETTERS[1:4]), y=sample(1:100, 4))
library(ggplot2)
ggplot(data=df, aes(x=x, y=y, width=.5)) + 
  geom_bar(stat="identity", position="identity") +
  opts(title="width = .5") + labs(x="", y="") +
  theme_bw()

Compare with the following other settings for width:

So far, so good. Now, suppose we have two factors. In case you would like to play with evenly spaced juxtaposed bars (like when using space together with beside=TRUE in barplot()), it's not so easy using geom_bar(position="dodge"): you can change bar width, but not add space in between adjacent bars (and I didn't find a convenient solution on Google). I ended up with something like that:

df <- data.frame(g=gl(2, 1, labels=letters[1:2]), y=sample(1:100, 4))
x.seq <- c(1,2,4,5)
ggplot(data=transform(df, x=x.seq), aes(x=x, y=y, width=.85)) +
  geom_bar(stat="identity", aes(fill=g)) + labs(x="", y="") + 
  scale_x_discrete(breaks = NA) + 
  geom_text(aes(x=c(sum(x.seq[1:2])/2, sum(x.seq[3:4])/2), y=0, 
                label=c("X","Y")), vjust=1.2, size=8)

The vector used for the $x$-axis is "injected" in the data.frame, so that so you change the outer spacing if you want, while width allows to control for inner spacing. Labels for the $x$-axis might be enhanced by using scale_x_discrete().

Increase space between bars in ggplot

You can adjust the width outside of the position_dodge as well (in geom_bar),

ggplot(data=df, aes(x=Gene, y=FC, fill=expt, group=expt)) +
  geom_bar(colour="black", stat="identity", position = position_dodge(width = 0.8), width=0.5) +
  geom_errorbar(aes(ymax = FC + se, ymin = FC, group=expt),
                position = position_dodge(width = 0.8), width = 0.25)

or

dodge <- position_dodge(width = 0.5)

ggplot(data=df, aes(x=Gene, y=FC, fill=expt, group=expt)) +
  geom_bar(colour="black", stat="identity", position=dodge, width=0.5) +
  geom_errorbar(aes(ymax = FC + se, ymin = FC, group=expt),
                position = dodge, width = 0.25)

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