Graphics Reference
In-Depth Information
For narrower bars:
ggplot(pg_mean, aes(x
=
group, y
=
weight))
+
geom_bar(stat
=
"identity"
, width
=
0.5
)
And for wider bars (these have the maximum width of 1):
ggplot(pg_mean, aes(x
=
group, y
=
weight))
+
geom_bar(stat
=
"identity"
, width
=
1
)
Figure 3-13. Different bar widths
For grouped bars, the default is to have no space between bars within each group. To add space
between bars within a group, make
width
smaller and set the value for
position_dodge
to be
For a grouped bar graph with narrow bars:
ggplot(cabbage_exp, aes(x
=
Date, y
=
Weight, fill
=
Cultivar))
+
geom_bar(stat
=
"identity"
, width
=
0.5
, position
=
"dodge"
)
And with some space between the bars:
ggplot(cabbage_exp, aes(x
=
Date, y
=
Weight, fill
=
Cultivar))
+
geom_bar(stat
=
"identity"
, width
=
0.5
, position
=
position_dodge(
0.7
))
