머리말 : 저는 자신의 자유 의지에 대한 원형 차트를 만들지 않았습니다.
library(ggplot2)
library(dplyr)
#
# df$main should contain observations of interest
# df$condition can optionally be used to facet wrap
#
# labels should be a character vector of same length as group_by(df, main) or
# group_by(df, condition, main) if facet wrapping
#
pie_chart <- function(df, main, labels = NULL, condition = NULL) {
# convert the data into percentages. group by conditional variable if needed
df <- group_by_(df, .dots = c(condition, main)) %>%
summarize(counts = n()) %>%
mutate(perc = counts/sum(counts)) %>%
arrange(desc(perc)) %>%
mutate(label_pos = cumsum(perc) - perc/2,
perc_text = paste0(round(perc * 100), "%"))
# reorder the category factor levels to order the legend
df[[main]] <- factor(df[[main]], levels = unique(df[[main]]))
# if labels haven't been specified, use what's already there
if (is.null(labels)) labels <- as.character(df[[main]])
p <- ggplot(data = df, aes_string(x = factor(1), y = "perc", fill = main)) +
# make stacked bar chart with black border
geom_bar(stat = "identity", color = "black", width = 1) +
# add the percents to the interior of the chart
geom_text(aes(x = 1.25, y = label_pos, label = perc_text), size = 4) +
# add the category labels to the chart
# increase x/play with label strings if labels aren't pretty
geom_text(aes(x = 1.82, y = label_pos, label = labels), size = 4) +
# convert to polar coordinates
coord_polar(theta = "y") +
# formatting
scale_y_continuous(breaks = NULL) +
scale_fill_discrete(name = "", labels = unique(labels)) +
theme(text = element_text(size = 22),
axis.ticks = element_blank(),
axis.text = element_blank(),
axis.title = element_blank())
# facet wrap if that's happening
if (!is.null(condition)) p <- p + facet_wrap(condition)
return(p)
}
예 :
# sample data
resps <- c("A", "A", "A", "F", "C", "C", "D", "D", "E")
cond <- c(rep("cat A", 5), rep("cat B", 4))
example <- data.frame(resps, cond)
단지 전형적인 ggplot 콜 같은
ex_labs <- c("alpha", "charlie", "delta", "echo", "foxtrot")
pie_chart(example, main = "resps", labels = ex_labs) +
labs(title = "unfacetted example")
01 여기
는 비율을 포함
ggpie
함수의 변형이다 23,516,
ex_labs2 <- c("alpha", "charlie", "foxtrot", "delta", "charlie", "echo")
pie_chart(example, main = "resps", labels = ex_labs2, condition = "cond") +
labs(title = "facetted example")
가 대단히 감사합니다! 나는 이것을하기에 미쳐 가고 있었다. 나는 ggplot2 라이브러리에 멍청한 사람이다. – pescobar
@Gregor'at '를 계산할 때 코드가하는 일을 설명해 주시겠습니까? 고마워. –
@info_seekeR 하단에 몇 개의 단락을 추가했습니다. 도움이되는지 확인하십시오. – Gregor