Draw an area defined by an upper and lower diagonal into an arc

The geom_diagonal_wide_arc() function draws a thick diagonal, that is, a polygon confined between a lower and upper diagonal. As with the diagonal functions in ggforce, the wide diagonal variant is horizontal. This function joins two adjacent diagonals into one wider arc.

stat_diagonal_wide_arc(
  mapping = NULL,
  data = NULL,
  geom = "shape",
  position = "identity",
  n = 100,
  strength = 0.5,
  na.rm = FALSE,
  show.legend = NA,
  inherit.aes = TRUE,
  ...
)

geom_diagonal_wide_arc(
  mapping = NULL,
  data = NULL,
  stat = "diagonal_wide_arc",
  position = "identity",
  n = 100,
  na.rm = FALSE,
  strength = 0.5,
  show.legend = NA,
  inherit.aes = TRUE,
  ...
)

Arguments

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. A `function` can be created from a `formula` (e.g. `~ head(.x, 10)`).
geom	The geometric object to use display the data
position	Position adjustment, either as a string, or the result of a call to a position adjustment function.
n	The number of points to create for each of the bounding diagonals
strength	The proportion to move the control point along the x-axis towards the other end of the bezier curve
na.rm	If `FALSE`, the default, missing values are removed with a warning. If `TRUE`, missing values are silently removed.
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. It can also be a named logical vector to finely select the aesthetics to display.
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()`.
...	Other arguments passed on to `layer()`. These are often aesthetics, used to set an aesthetic to a fixed value, like `colour = "red"` or `size = 3`. They may also be parameters to the paired geom/stat.
stat	The statistical transformation to use on the data for this layer, as a string.

Aesthetics

geom_diagonal_wide_arc understand the following aesthetics (required aesthetics are in bold):

x
y
group
color
size
linetype
alpha
lineend

Examples

data <- data.frame(
  x = c(1, 2, 2, 1, 2, 3, 3, 2),
  y = c(1, 2, 3, 2, 2, 1, 2, 3),
  group = c(1, 1, 1, 1, 1, 1, 1, 1)
)

ggplot(data) +
  geom_diagonal_wide_arc(aes(x, y, group=group))

# The strength control the steepness
ggplot(data, aes(x, y, group = group)) +
  geom_diagonal_wide_arc(strength=0.75, alpha=0.5, fill='red') +
  geom_diagonal_wide_arc(strength=0.25, alpha=0.5, fill='blue')

# The diagonal_wide_arc geom uses geom_shape under the hood, so corner rounding
# etc are all there
ggplot(data) +
  geom_diagonal_wide_arc(aes(x, y, group=group), radius=unit(5, 'mm'))
#> Warning: Ignoring unknown parameters: radius

Draw an area defined by an upper and lower diagonal into an arc

Arguments

Aesthetics

See also

Examples