Waterlines — bt_waterlines • bertin

Waterlines

Usage

bt_waterlines(
  bertin,
  data,
  dist = 5,
  nb = 3,
  precision = 3,
  stroke = "#5d81ba",
  strokeOpacity = c(1, 0.1),
  strokeWidth = c(1.2, 0.2),
  strokeDasharray = "none",
  strokeLinecap = "round",
  strokeLinejoin = "round",
  display = TRUE
)

Arguments

bertin: map object
data: sf object EPSG:4326
dist: distance between lines in pixels
nb: number of lines
precision: number of steps defining buffers. 1 = not accurate, 8 = accurate
stroke: stroke color
strokeOpacity: stroke opacity
strokeWidth: stroke width
strokeDasharray: stroke dash array
strokeLinecap: appearance of the line cap
strokeLinejoin: appearance of the intersection beetween two or several lines
display: Boolean to allow to show or hide the layer. This parameter has no effect on the calculation of the extent

Value

a map object

Examples

library(sf)
world <- st_read(system.file("gpkg/world.gpkg", package = "bertin"),
                 layer = "world", quiet = TRUE)
bt_param(margin = 10, width = 500, projection = "NellHammer") |>
  bt_layer(data = world) |>
  bt_waterlines(data = world, dist = 3, nb = 4) |>
  bt_draw()