Add an inset within a map

Usage

add_inset(x, y, ratio = 1/5, add = TRUE, ...)

Arguments

x: should be a sf object or at least readable by sf::st_geometry.
y: should be a sf object or at least readable by sf::st_bbox.
ratio: numeric, how big should be the inset relative to the whole map or to y. See details.
add: loical, should the inset be added to an existing plot.
...: some parameters that will be used by sf::plot

Value

sf geometry transformed to be placed in the good loaction in the map.

Details

If add = TRUE, the location is calculated through the extent of current map. If add = FALSE, the location is calcultaed through the extent of y.

The function is based on the facility to rescale and translate sf object.

Author

Frédéric Grelot

Examples


library(sf)
#> Linking to GEOS 3.12.2, GDAL 3.10.3, PROJ 9.4.1; sf_use_s2() is TRUE
so.ii::map_so_ii()
inset = add_inset(
  so.ii::so_ii_inset[c("region", "so-ii"), ],
  so.ii::so_ii_limit,
  col = c("gray", "red"), border = c(NA, "red"), lwd = 1:2
)