Map a Single Raster Layer — fb_map

This is a helper function to plot a map of an environmental raster. The raster is plotted as is, with its given coordinate reference system. The function can provide a background map if the background argument is toggled.

Usage

fb_map_raster(x, background = FALSE, ...)

Arguments

x: a SpatRaster object (package terra). A raster of one single layer
background: a logical. If TRUE adds a layer of country boundaries from Natural Earth.
...: other parameters passed to ggplot2::theme()

Value

A ggplot object.

Examples

library(ggplot2)

## Load raster ----
tavg <- system.file("extdata", "annual_mean_temp.tif", package = "funbiogeo")
tavg <- terra::rast(tavg)

## Default map ----
fb_map_raster(tavg)


## Map with a background ----
fb_map_raster(tavg, background = TRUE)


## Map with custom theme ----
fb_map_raster(tavg, legend.position = "bottom")


## Advanced customization ----
my_map <- fb_map_raster(tavg) +
  scale_fill_distiller("Temperature", palette = "Spectral") +
  theme(legend.position = "bottom") +
  ggtitle("Mean annual temperature in Western Europe")

my_map


## Map w/o annotation ----
fb_map_raster(tavg) +
  theme_void() +
  theme(legend.position = "none")