mapsf (version 1.2.0)

mf_map_symb: Plot symbols

Description

mf_map() can use symbols to display qualitative data, using symb map type.

For polygons, centroids are used to plot graduated symbols. This map type is not available for lines.

Usage

For polygons and points:

mf_map(x, var, type = "symb",
       pch, cex = 2, lwd = 0.7, pal, rev = FALSE, border,
       val_order,
       col_na = "grey", pch_na = 4, cex_na = 1,
       alpha, expandBB, extent, bg, add = TRUE, leg_*)

Value

x is (invisibly) returned.

Arguments

x

object of class sf (polygons or points)

var

name of the variable to map

type

"symb"

pch

a vector of types of symbols, see pch. The length of pch should match the number of modalities.

cex

a vector of sizes for symbols. The length of cex should match the number of modalities.

lwd

border width of symbols

pal

a set of colors (hex codes) or a palette name. Palette names can be obtained with hcl.pals. The default palette is the pal_quali palette (see mf_theme).

rev

if pal is a palette name, whether the ordering of the colors should be reversed (TRUE) or not (FALSE)

border

border color for symbols, a hex code or color name given by colors. The default color is the background color (see mf_theme).

val_order

modalities order in the legend, a character vector that matches var modalities. Default to alphabetic order of modalities.

pch_na

type of symbol for missing values, see pch

cex_na

size of symbol for missing values

col_na

color for missing values, a hex code or a color name given by colors

Examples

mtq <- mf_get_mtq()
mtq$STATUS[3] <- NA
mf_map(mtq)
mf_map(mtq, "STATUS", "symb",
  pal = "Berlin", border = "white", lwd = 1,
  cex = c(4, 3, 2), pch = c(21:23), col_na = "red",
  val_order = c("Prefecture", "Sub-prefecture", "Simple municipality"),
  leg_title = ""
)