For each x value, geom_ribbon
displays a y interval defined
by ymin
and ymax
. geom_area
is a special case of
geom_ribbon
, where the ymin
is fixed to 0.
geom_ribbon(mapping = NULL, data = NULL, stat = "identity", position = "identity", ..., na.rm = FALSE, show.legend = NA, inherit.aes = TRUE) geom_area(mapping = NULL, data = NULL, stat = "identity", position = "stack", na.rm = FALSE, show.legend = NA, inherit.aes = TRUE, ...)
mapping | Set of aesthetic mappings created by |
---|---|
data | The data to be displayed in this layer. There are three options: If A A |
stat | The statistical transformation to use on the data for this layer, as a string. |
position | Position adjustment, either as a string, or the result of a call to a position adjustment function. |
... | Other arguments passed on to |
na.rm | If |
show.legend | logical. Should this layer be included in the legends?
|
inherit.aes | If |
An area plot is the continuous analog of a stacked bar chart (see
geom_bar()
), and can be used to show how composition of the
whole varies over the range of x. Choosing the order in which different
components is stacked is very important, as it becomes increasing hard to
see the individual pattern as you move up the stack. See
position_stack()
for the details of stacking algorithm.
geom_ribbon
understands the following aesthetics (required aesthetics are in bold):
x
ymin
ymax
alpha
colour
fill
group
linetype
size
Learn more about setting these aesthetics in vignette("ggplot2-specs")
geom_bar()
for discrete intervals (bars),
geom_linerange()
for discrete intervals (lines),
geom_polygon()
for general polygons