geom_draw {ggalign} | R Documentation |
Layer with Grid or Function
Description
Draw ggplot2 layer with a grod or function.
Usage
geom_draw(
draw = grid::nullGrob(),
...,
mapping = NULL,
data = NULL,
stat = "identity",
position = "identity",
na.rm = FALSE,
inherit.aes = TRUE
)
Arguments
draw |
Either a grob object or a function (can be
purrr-style) which accepts two arguments (data and coords )
and returns a grob.
when draw is a function, it is used as the draw_group function
in a Geom ggproto object.
|
... |
Additional arguments passed to draw .
|
mapping |
Set of aesthetic mappings created by 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. A function can be created
from a formula (e.g. ~ head(.x, 10) ).
|
stat |
The statistical transformation to use on the data for this layer.
When using a geom_*() function to construct a layer, the stat
argument can be used the override the default coupling between geoms and
stats. The stat argument accepts the following:
A Stat ggproto subclass, for example StatCount .
A string naming the stat. To give the stat as a string, strip the
function name of the stat_ prefix. For example, to use stat_count() ,
give the stat as "count" .
For more information and other ways to specify the stat, see the
layer stat documentation.
|
position |
A position adjustment to use on the data for this layer. This
can be used in various ways, including to prevent overplotting and
improving the display. The position argument accepts the following:
The result of calling a position function, such as position_jitter() .
This method allows for passing extra arguments to the position.
A string naming the position adjustment. To give the position as a
string, strip the function name of the position_ prefix. For example,
to use position_jitter() , give the position as "jitter" .
For more information and other ways to specify the position, see the
layer position documentation.
|
na.rm |
If FALSE , the default, missing values are removed with
a warning. If TRUE , missing values are silently removed.
|
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() .
|
Details
If you want to combine the functionality of multiple geoms it can
usually be achieved by preparing the data for each of the geoms inside the
draw_*()
call and send it off to the different geoms, collecting the
output in a grid::gList
(a list of grobs) if the call is draw_group()
or a grid::gTree
(a grob containing multiple children grobs) if the
call is draw_panel()
.
Value
A ggplot2 layer.
See Also
https://ggplot2.tidyverse.org/reference/ggplot2-ggproto.html
Examples
ggdraw_text <- grid::textGrob(
"ggdraw",
x = c(0, 0, 0.5, 1, 1),
y = c(0, 1, 0.5, 0, 1),
hjust = c(0, 0, 0.5, 1, 1),
vjust = c(0, 1, 0.5, 0, 1)
)
ggplot2::ggplot(data.frame(x = 1, y = 2)) +
geom_draw(ggdraw_text)
[Package
ggalign version 0.0.3
Index]