ghostLayer: Plot a Ghost Layer
In cartography: Thematic Cartography

ghostLayer

R Documentation

Plot a Ghost Layer

Description

Plot an invisible layer with the extent of a spatial object.

Usage

ghostLayer(x, bg)

Arguments

`x`	an sf object, a simple feature collection or a Spatial*DataFrame.
`bg`	background color.

Examples

library(sf)
mtq <- st_read(system.file("gpkg/mtq.gpkg", package="cartography"))
target <- mtq[30,]
ghostLayer(target, bg = "lightblue")
plot(st_geometry(mtq), add = TRUE, col = "gold2")
plot(st_geometry(target), add = TRUE, col = "red")
# overly complicated label placement trick:
labelLayer(x = suppressWarnings(st_intersection(mtq, st_buffer(target, 2000))), 
           txt = "LIBGEO", halo = TRUE, cex = .9, r = .14, font = 2, 
           bg = "grey20", col= "white")

cartography documentation built on Sept. 14, 2023, 5:08 p.m.