Generate current rose — adcp_plot_current

The direction of the petal indicates the direction the current is flowing to. The colour indicates the current speed. The length of the petal shows the number of observations for each current speed and direction bin.

Usage

adcp_plot_current_rose(
  dat,
  pal = NULL,
  speed_col = sea_water_speed_cm_s_labels,
  direction_col = sea_water_to_direction_degree_labels,
  speed_label = "Current Speed (cm/s)"
)

Arguments

dat: Data frame with at least 2 columns: an ordered factor of direction groups, and a factor of speed groups. The proportion of observations in each group is counted in the function and automatically converted to percent for the figure.
pal: Vector of colours. Must be the same length as the number of speed factor levels.
speed_col: The column in dat that holds the speed groups (NOT QUOTED).
direction_col: The column in dat that holds the direction groups (NOT QUOTED).
speed_label: Title of the current speed legend. Default is "Current Speed (cm/s)".

Value

Returns a ggplot object, a rose plot of current speed and direction.