Specify colour to a stacked area graph

Question

I would like to change specific colours (oder than rainbow default) to each column "Sector" in the code below

I've read that geom_area doesn't allow changes in colour? if so is there another way to plot this graph without using ggplot2 package?

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")

score 3 · Accepted Answer · answered Mar 29 '19 at 23:41

3

There are a lot of ways to change the color scale in ggplot.

Here's a way where you can specify exactly which colors you want:

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"))

answered Mar 29 '19 at 23:41

bischrob

544
3
10

thanks! and is it possible to add also colour gradients? – discoveries Mar 29 '19 at 23:45
Yes, take a look at the variations of scale_fill_gradient – bischrob Mar 29 '19 at 23:46

Specify colour to a stacked area graph

1 Answers1