geom_hurricane: Wind radii charts

In thunder001/GeomHurr:

Usage

geom_hurricane(mapping = NULL, data = NULL, stat = "identity",
  position = "identity", na.rm = FALSE, show.legend = NA,
  inherit.aes = TRUE, scale_radii = 0.1, ...)

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.
stat	The statistical transformation to use on the data for this layer, as a string.
position	Position adjustment, either as a string, or the result of a call to a position adjustment function.
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.
scale_radii	A numeric of scale factor for wind radii chart, default value is 10 \item ...other arguments passed on to layer. These are often aesthetics, used to set an aesthetic to a fixed value, like color = "red" or size = 3. They may also be parameters to the paired geom/stat.

This wind radii chart displays how far winds of a certain intensity (e.g., 34, 50, or 64 knots) extended from a hurricane’s center, with separate values given for the northeast, northwest, southeast, and southwest quadrants of the storm. Aesthetics

\aesthetics

geomhurricane

{ # hurrican data of one observation library(ggmap) library(ggplot2) ike_2008_09_13 <- hurricanes[hurricanes$storm_id=="IKE-2008" & hurricanes$date_time=="2008-09-13 12:00:00", ] # Get base map near Houston area where hurrican IKE passed by map_data <- get_map("Houston", zoom = 6, maptype = "toner-background") # Plot the hurricane base_map <- ggmap(map_data, extent = "device") base_map + geom_hurricane(data = ike_2008_09_13, aes(x = longitude, y = latitude, r_ne = ne, r_se = se, r_nw = nw, r_sw = sw, fill = wind_speed2, color = wind_speed2), scale_radii = 0.2) + scale_color_manual(name = "Wind speed (kts)", values = c("red", "orange", "yellow")) + scale_fill_manual(name = "Wind speed (kts)", values = c("red", "orange", "yellow"))

thunder001/GeomHurr documentation built on May 29, 2019, 9:53 a.m.