r - 为堆积面积图指定颜色

Question

我想在下面的代码中将特定颜色（不同于彩虹默认值）更改为每一列“扇区”

我读过 geom_area 不允许改变颜色？如果是这样，是否有另一种方法可以在不使用 ggplot2 包的情况下绘制此图？

Sector <- rep(c("S01","S02","S03","S04","S05","S06","S07"),times=7)
Year <- as.numeric(rep(c("1950","1960","1970","1980","1990","2000","2010"),each=7))
Value <- runif(49, 10, 100)
data <- data.frame(Sector,Year,Value)
data

ggplot(data, aes(x=Year, y=Value, fill=Sector)) + 
  geom_area(stat="identity")

Answer 1

有很多方法可以改变 ggplot 中的色标。

您可以通过以下方式准确指定您想要的颜色：

Sector <- rep(c("S01","S02","S03","S04","S05","S06","S07"),times=7)
Year <- as.numeric(rep(c("1950","1960","1970","1980","1990","2000","2010"),each=7)) 
Value <- runif(49, 10, 100) 
data <- data.frame(Sector,Year,Value)
data

ggplot(data, aes(x=Year, y=Value, fill=Sector)) + geom_area(stat="identity") +
  scale_fill_manual(values = c("black","blue","gray","orange","tan","purple","darkgray"))