plot_swatch: Plot shapefile polygons based on slot values

In phyloregion: Biogeographic Regionalization and Macroecology

Description

plot_swatch maps discretized values of a quantity using continuous color gradients.

Usage

plot_swatch(
  x,
  values = NULL,
  col = hcl.colors(n = 10, palette = "Blue-Red 3", rev = FALSE),
  key_label = "",
  leg = 10,
  lwd = 15,
  pos = "bottomleft",
  legend = TRUE,
  border = par("fg"),
  breaks = "quantile",
  min = NULL,
  max = NULL,
  ...
)

Arguments

x	A data frame or object of the class SpatialPolygonsDataFrame
values	Variable in the SpatialPolygonsDataFrame for which to discretize the values of the quantity.
col	A vector of colors
key_label	label for the color key
leg	Numeric, length of the legend
lwd	numeric, line width of the legend.
pos	location to position the legend such as “bottomright”, “bottomleft”, “topleft”, and “topright”.
legend	logical indicating whether to add a legend to the map.
border	plot polygons in SpatialPolygons object
breaks	one of “equal”, “pretty”, “jenks”, “quantile” or numeric with the actual breaks by specifying the minimum (min) and maximum (max) bounds.
min	the minima of the lowest bound of the break.
max	the maxima of the upper bound of the break
...	Further arguments passed to or from other methods.

Value

Returns no value, just map swatch of colors in geographic space!

Author(s)

Barnabas H. Daru [e-mail]

See Also

SpatialPolygons-class

Examples

library(sp)
s <- readRDS(system.file("nigeria/SR_Naija.rds", package = "phyloregion"))
plot_swatch(s, values = s$SR)

phyloregion documentation built on May 1, 2021, 9:06 a.m.