linemap: Line Map

In linemap: Line Maps

Description

Plot a line map.

Usage

linemap(
  x,
  var,
  k = 2,
  threshold = 1,
  col = "white",
  border = "black",
  lwd = 0.5,
  add = FALSE
)

Arguments

x	a data.frame, two first column must be longitudes and latitudes of gridded data.
var	name of the variable to plot.
k	expension factor.
threshold	threshold of the data to plot.
col	color for the lines areas.
border	color for the lines borders.
lwd	thickness of the lines.
add	if TRUE add the lines to the current plot.

Examples

library(linemap)
data("popOcc")
# example on an extract of the gridded data
popToulouse <- popOcc[findInterval(popOcc$X, c(3600234,3659444)) == 1  &
                        findInterval(popOcc$Y, c(2290913,2348192)) == 1, ]
opar <- par(mar=c(0,0,0,0), bg = "ivory1")
linemap(x = popToulouse, var = "pop", k = 2.5, threshold = 50,
        col = "ivory1", border = "ivory4", lwd = 0.6, add = FALSE)
par(opar)


# example on the full dataset
library(sf)
occitanie <- st_read(system.file("gpkg/geofla.gpkg", package = "linemap"),
                     layer = "Occitanie")
opar <- par(mar=c(0,0,0,0), bg = "ivory2")
plot(st_geometry(occitanie), col="ivory1", border = NA)
linemap(x = popOcc, var = "pop", k = 2.5, threshold = 50,
        col = "ivory1", border = "ivory4", lwd = 0.6, add = TRUE)
par(opar)

linemap documentation built on Jan. 19, 2021, 5:06 p.m.