Ribbons, y range with continuous x values.

Usage

geom_ribbon(mapping = NULL, data = NULL, stat = "identity", position = "identity", 
  na.rm = FALSE, ...)

Arguments

mapping
The aesthetic mapping, usually constructed with aes or aes_string. Only needs to be set at the layer level if you are overriding the plot defaults.
data
A layer specific dataset - only needed if you want to override the plot defaults.
stat
The statistical transformation to use on the data for this layer.
position
The position adjustment to use for overlappling points on this layer
na.rm
If FALSE (the default), removes missing values with a warning. If TRUE silently removes missing values.
...
other arguments passed on to layer. This can include aesthetics whose values you want to set, not map. See layer for more details.

Description

Ribbons, y range with continuous x values.

Aesthetics

geom_ribbon understands the following aesthetics (required aesthetics are in bold):

  • x
  • ymax
  • ymin
  • alpha
  • colour
  • fill
  • linetype
  • size

Examples

# Generate data huron <- data.frame(year = 1875:1972, level = as.vector(LakeHuron)) library(plyr) # to access round_any huron$decade <- round_any(huron$year, 10, floor) h <- ggplot(huron, aes(x=year)) h + geom_ribbon(aes(ymin=0, ymax=level))

h + geom_area(aes(y = level))

# Add aesthetic mappings h + geom_ribbon(aes(ymin=level-1, ymax=level+1))

h + geom_ribbon(aes(ymin=level-1, ymax=level+1)) + geom_line(aes(y=level))

# Take out some values in the middle for an example of NA handling huron[huron$year > 1900 & huron$year < 1910, "level"] <- NA h <- ggplot(huron, aes(x=year)) h + geom_ribbon(aes(ymin=level-1, ymax=level+1)) + geom_line(aes(y=level))

# Another data set, with multiple y's for each x m <- ggplot(movies, aes(y=votes, x=year)) (m <- m + geom_point())

# The default summary isn't that useful m + stat_summary(geom="ribbon", fun.ymin="min", fun.ymax="max")

m + stat_summary(geom="ribbon", fun.data="median_hilow")

# Use qplot instead qplot(year, level, data=huron, geom=c("area", "line"))
Warning message: Removed 9 rows containing missing values (position_stack).

See also

geom_bar for discrete intervals (bars), geom_linerange for discrete intervals (lines), geom_polygon for general polygons"