私geom_tile
はパッケージからggplot2
あなたが探していることを行うことができると思います。このStackOverflowの質問に対する Shaneの答えは、あなたを始めさせるはずです。
編集:比較のために他のいくつかのプロットを使用した例を示します。
library(ggplot2)
# Here's some data I had lying around
tb <- structure(list(region = c("Africa", "Asia", "Latin America",
"Other", "US-born"), ncases = c(36L, 34L, 56L, 2L, 44L)), .Names = c("region",
"ncases"), row.names = c(NA, -5L), class = "data.frame")
# A bar chart of counts
ggplot(tb, aes(x = region, weight = ncases, fill = region)) +
geom_bar()
# Pie chart. Forgive me, Hadley, for I must sin.
ggplot(tb, aes(x = factor(1), weight = ncases, fill = region)) +
geom_bar(width = 1) +
coord_polar(theta = "y") +
labs(x = "", y = "")
# Percentage pie.
ggplot(tb, aes(x = factor(1), weight = ncases/sum(ncases), fill = region)) +
geom_bar() +
scale_y_continuous(formatter = 'percent') +
coord_polar(theta = "y") +
labs(x = "", y = "")
# Waffles
# How many rows do you want the y axis to have?
ndeep <- 5
# I need to convert my data into a data.frame with uniquely-specified x
# and y coordinates for each case
# Note - it's actually important to specify y first for a
# horizontally-accumulating waffle
# One y for each row; then divide the total number of cases by the number of
# rows and round up to get the appropriate number of x increments
tb4waffles <- expand.grid(y = 1:ndeep,
x = seq_len(ceiling(sum(tb$ncases) / ndeep)))
# Expand the counts into a full vector of region labels - i.e., de-aggregate
regionvec <- rep(tb$region, tb$ncases)
# Depending on the value of ndeep, there might be more spots on the x-y grid
# than there are cases - so fill those with NA
tb4waffles$region <- c(regionvec, rep(NA, nrow(tb4waffles) - length(regionvec)))
# Plot it
ggplot(tb4waffles, aes(x = x, y = y, fill = region)) +
geom_tile(color = "white") + # The color of the lines between tiles
scale_fill_manual("Region of Birth",
values = RColorBrewer::brewer.pal(5, "Dark2")) +
opts(title = "TB Cases by Region of Birth")
明らかに、美学を正しくするために行わなければならない追加の作業があります(たとえば、それらの軸は一体何を意味しているのでしょうか?)、しかしそれはそのメカニズムです。私は読者のための練習として「かなり」を残します。