st_hatched_polygon: st_hatched_polygon

In rpkgs/gg.layers: ggplot layers

st_hatched_polygon

Description

st_hatched_polygon

Usage

st_hatched_polygon(x, density = 2, angle = 45, fillOddEven = FALSE)

Arguments

x	sf polygon object
density	the density of shading lines, in lines per inch. The default value of NULL means that no shading lines are drawn. A zero value of density means no shading nor filling whereas negative values and NA suppress shading (and so allow color filling).
angle	the slope of shading lines, given as an angle in degrees (counter-clockwise).
fillOddEven	logical controlling the polygon shading mode: see below for details. Default FALSE.

Value

An hatched area, sf lines

References

1. https://github.com/statnmap/HatchedPolygons

2. https://statnmap.github.io/HatchedPolygons/

3. https://statnmap.github.io/HatchedPolygons/articles/leaflet_shading_polygon.html

Examples

library(gg.layers)
library(ggplot2)
data("d_trendPerc")

d = d_trendPerc %>% subset(perc >= 0.99) %>% .[, 1:2]
poly = st_point2poly(d)
hatches = st_hatched_polygon(poly) #
ggplot(hatches) + geom_sf()

rpkgs/gg.layers documentation built on Sept. 14, 2024, 11:07 p.m.