stat_spatial_identity function

Spatial-aware ggplot2 layers

These layers are much like their counterparts, stat_identity , geom_point , geom_path , and geom_polygon , except they have a crs argument that ensures they are projected when using coord_sf . Stats are applied to the x and y coordinates that have been transformed.

stat_spatial_identity(
  mapping = NULL,
  data = NULL,
  crs = NULL,
  geom = "point",
  position = "identity",
  ...,
  show.legend = NA,
  inherit.aes = TRUE
)

geom_spatial_point(mapping = NULL, data = NULL, crs = NULL, ...)

geom_spatial_path(mapping = NULL, data = NULL, crs = NULL, ...)

geom_spatial_polygon(mapping = NULL, data = NULL, crs = NULL, ...)

geom_spatial_text(mapping = NULL, data = NULL, crs = NULL, ...)

geom_spatial_label(mapping = NULL, data = NULL, crs = NULL, ...)

geom_spatial_text_repel(mapping = NULL, data = NULL, crs = NULL, ...)

geom_spatial_label_repel(mapping = NULL, data = NULL, crs = NULL, ...)

Arguments

• mapping: An aesthetic mapping created with ggplot2::aes().
• data: A data frame or other object, coerced to a data.frame by ggplot2::fortify().
• crs: The crs of the x and y aesthetics, or NULL to use default lon/lat crs (with a message).
• geom: The geometry to use.
• position: The position to use.
• ...: Passed to the combined stat/geom as parameters or fixed aesthetics.
• show.legend, inherit.aes: See ggplot2::layer().

Returns

A ggplot2::layer().

Examples

cities <- data.frame(
  x = c(-63.58595, 116.41214, 0),
  y = c(44.64862, 40.19063, 89.9),
  city = c("Halifax", "Beijing", "North Pole")
)

library(ggrepel)
ggplot(cities, aes(x, y)) +
  geom_spatial_point(crs = 4326) +
  stat_spatial_identity(aes(label = city), geom = "label_repel") +
  coord_sf(crs = 3857)