JapanPrefCartogram: A simple circle cartogram of Japan

In NipponMap: Japanese Map Data and Functions

Description

Draw a circle cartogram of Japan in the prefecture level

Usage

JapanPrefCartogram(col = NULL, axes = FALSE, xlab = "", ylab = "", xlim = NULL,
                               ylim = NULL, main = NULL, ...)

Arguments

col	A character vector. RGB or named colors in order of JISCODE to fill a polygon of 47 prefectures.
axes	logical. If TRUE, axes are drawn. The default value is FALSE.
xlab	A title for the x axis. The default value is NULL.
ylab	A title for the y axis. The default value is NULL.
xlim	The x-range to be displayed. The default value is NULL.
ylim	The y-range to be displayed. The default value is NULL.
main	An overall title for the plot
...	any other options passed to control circles.

Details

The function JapanPrefCartogram draws a simple circle cartogram of Japan in prefecture level. The size of circles represents population in 2015 in each prefecture. Currently, the size is fixed. Users can control only colors and some other graphic parameters. The order of colors must match to the JIS-code order of prefectures in Japan.

Population set was obtained from 2015 Population Census of Japan.

Value

A data.frame. The coordinates of a label point in each prefecture.

Note

The author would like to express the deepest appreciation to Prof. Luc Anselin, the developer of GeoDa, the output of which was used for calculation of the coordinates of this cartogram.

Author(s)

Susumu Tanimura [e-mail]

Examples

JapanPrefCartogram()

op <- palette(rainbow(47, end = 0.9))
xy <- JapanPrefCartogram(col = 1:47, fg = gray(.8))
lb <- character(47)
lb[13] <- "Tokyo"
text(xy, lb)
palette(op)

Example output

NipponMap documentation built on May 1, 2019, 8:44 p.m.