gf_violin | R Documentation |
A violin plot is a compact display of a continuous distribution. It is a
blend of geom_boxplot()
and geom_density()
: a
violin plot is a mirrored density plot displayed in the same way as a
boxplot.
gf_violin(
object = NULL,
gformula = NULL,
data = NULL,
...,
alpha,
color,
fill,
group,
linetype,
linewidth,
weight,
draw_quantiles = NULL,
trim = TRUE,
scale = "area",
bw,
adjust = 1,
kernel = "gaussian",
xlab,
ylab,
title,
subtitle,
caption,
geom = "violin",
stat = "ydensity",
position = "dodge",
show.legend = NA,
show.help = NULL,
inherit = TRUE,
environment = parent.frame()
)
object |
When chaining, this holds an object produced in the earlier portions of the chain. Most users can safely ignore this argument. See details and examples. |
gformula |
A formula with shape |
data |
The data to be displayed in this layer. There are three options: If A A |
... |
Additional arguments. Typically these are
(a) ggplot2 aesthetics to be set with |
alpha |
Opacity (0 = invisible, 1 = opaque). |
color |
A color or a formula used for mapping color. |
fill |
A color for filling, or a formula used for mapping fill. |
group |
Used for grouping. |
linetype |
A linetype (numeric or "dashed", "dotted", etc.) or a formula used for mapping linetype. |
linewidth |
A numerical line width or a formula used for mapping linewidth. |
weight |
Useful for summarized data, |
draw_quantiles |
If |
trim |
If |
scale |
if "area" (default), all violins have the same area (before trimming the tails). If "count", areas are scaled proportionally to the number of observations. If "width", all violins have the same maximum width. |
bw |
The smoothing bandwidth to be used.
If numeric, the standard deviation of the smoothing kernel.
If character, a rule to choose the bandwidth, as listed in
|
adjust |
A multiplicate bandwidth adjustment. This makes it possible
to adjust the bandwidth while still using the a bandwidth estimator.
For example, |
kernel |
Kernel. See list of available kernels in |
xlab |
Label for x-axis. See also |
ylab |
Label for y-axis. See also |
title, subtitle, caption |
Title, sub-title, and caption for the plot.
See also |
geom, stat |
Use to override the default connection between
|
position |
Position adjustment, either as a string naming the adjustment
(e.g. |
show.legend |
logical. Should this layer be included in the legends?
|
show.help |
If |
inherit |
A logical indicating whether default attributes are inherited. |
environment |
An environment in which to look for variables not found in |
a gg object
Positional attributes (a.k.a, aesthetics) are specified using the formula in gformula
.
Setting and mapping of additional attributes can be done through the
use of additional arguments.
Attributes can be set can be set using arguments of the form attribute = value
or
mapped using arguments of the form attribute = ~ expression
.
In formulas of the form A | B
, B
will be used to form facets using
facet_wrap()
or facet_grid()
.
This provides an alternative to
gf_facet_wrap()
and
gf_facet_grid()
that is terser and may feel more familiar to users
of lattice.
Evaluation of the ggplot2 code occurs in the environment of gformula
.
This will typically do the right thing when formulas are created on the fly, but might not
be the right thing if formulas created in one environment are used to create plots
in another.
Hintze, J. L., Nelson, R. D. (1998) Violin Plots: A Box Plot-Density Trace Synergism. The American Statistician 52, 181-184.
ggplot2::geom_violin()
gf_violin(age ~ substance, data = mosaicData::HELPrct)
gf_violin(age ~ substance, data = mosaicData::HELPrct, fill = ~sex)
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