- mapping
Set of aesthetic mappings created by aes
or
aes_
. If specified and inherit.aes = TRUE
(the
default), it is combined with the default mapping at the top level of the
plot. You must supply mapping
if there is no plot mapping.
- data
The data to be displayed in this layer. There are three options:
If NULL
, the default, the data is inherited from the plot data as
specified in the call to ggplot
.
A data.frame
, or other object, will override the plot data. All
objects will be fortified to produce a data frame. See fortify
for which variables will be created.
A function
will be called with a single argument, the plot data. The
return value must be a data.frame
, and will be used as the layer
data.
- stat
The stat object to use calculate the data.
- position
Position adjustment, either as a string, or the result of a
call to a position adjustment function.
- na.rm
If FALSE
(the default), removes missing values with a
warning. If TRUE
silently removes missing values.
- show.legend
logical. Should this layer be included in the legends?
NA
, the default, includes if any aesthetics are mapped. FALSE
never includes, and TRUE
always includes.
- inherit.aes
If FALSE
, overrides the default aesthetics, rather
than combining with them. This is most useful for helper functions that
define both data and aesthetics and shouldn't inherit behaviour from the
default plot specification, e.g. borders
.
- PI
If FALSE
, confidence intervals will not be plotted, giving
only the forecast line.
- showgap
If showgap=FALSE
, the gap between the historical
observations and the forecasts is removed.
- series
Matches an unidentified forecast layer with a coloured object
on the plot.
- ...
Additional arguments for forecast.ts
, other
arguments are passed on to layer
. These are often aesthetics,
used to set an aesthetic to a fixed value, like color = "red"
or
alpha = .5
. They may also be parameters to the paired geom/stat.