r - 如何制作堆积面积图？

我正在尝试制作堆积面积图:

library(ggplot2)

ggplot(data, aes(x = variable, y = value, fill = term)) +
   geom_area()

但这导致了空白图。



预期图(示例)



我怎样才能做到这一点？

data <- structure(list(term = c("models", "percentiles", "models:percentiles",
                                "models", "percentiles", "models:percentiles",
                                "models", "percentiles", "models:percentiles"),
                       variable = structure(c(1L, 1L, 1L, 2L, 2L, 2L, 3L, 3L, 3L),
                                            .Label = c("R2", "R5", "R10"), class = "factor"),
                       value = c(0.435697205847009, 0.533615307749147, 0.0306874864038442,
                                 0.441369621882273, 0.520198994695284, 0.0384313834224421,
                                 0.394491546635206, 0.579421546902868, 0.0260869064619254)),
                  row.names = c(NA, -9L), class = "data.frame")

最佳答案

您只缺少group的美感:

ggplot(data, aes(x = variable, y = value, group = term, fill = term)) +
    geom_area(color = "black")