r语言怎么做一个三个种源,每个种源2个季节,每个季节四个物候天数的堆叠...答:R# 加载必要的包 library(ggplot2)创建数据框 data <- data.frame(source = rep(c("Source1", "Source2", "Source3"), each = 2 * 4),season = rep(c("Spring", "Summer"), times = 3 * 4),phenophase = rep(c("E1", "E2", "E3", "E4"), times = 3),value = rnorm...