Rose diagram statistic

Bins circular angles over a full period and returns counts, densities and proportions for rose diagrams.

Usage

stat_rose(
  mapping = NULL,
  data = NULL,
  geom = "col",
  position = "identity",
  ...,
  bins = 30,
  binwidth = NULL,
  boundary = 0,
  closed = TRUE,
  area = FALSE,
  normalize = c("count", "density", "proportion"),
  axial = FALSE,
  na.rm = FALSE,
  show.legend = NA,
  inherit.aes = TRUE
)

Arguments

mapping, data, geom, position, show.legend, inherit.aes

Standard ggplot2 layer arguments.

...

Additional arguments passed to the layer.

bins

Number of bins over the circular period.

binwidth

Optional bin width in radians. If supplied, bins is ignored after the number of bins is inferred from the period.

boundary

Lower boundary for the first bin.

closed

Included for API compatibility. Values on the upper period boundary are wrapped into the first bin.

area

If TRUE, radial heights are square-root transformed so that visual area is closer to the selected frequency scale.

normalize

Which scale should be used for the computed radial y value: counts, densities or proportions.

axial

Should angles be treated as axial, modulo pi?

na.rm

Should missing values be silently removed?

Value

A ggplot2 layer. Computed variables are xmin, xmax, x, count, density, proportion, width and y.

See also

Other rose diagram layers: geom_rose()

Examples

ggplot2::ggplot(wind_directions, ggplot2::aes(x = direction)) +
  stat_rose(bins = 16) +
  coord_circular()