select colors in ggsci using ggplot2

Question

I'm using ggsci, but I would like handpick the colors I use.

Say I'm plotting like this

library(tidyverse)
library(ggsci)
economics_long %>% filter(variable == "psavert" | variable == "uempmed") %>%
   ggplot(aes(date, value01, colour = variable)) +
            geom_line(size = 4)  + scale_color_jama()

but insted of using the first two colors #374E55FF #DF8F44FF,

show_col(pal_jama("default")(5)); pal_jama("default")(5)
# "#374E55FF" "#DF8F44FF" "#00A1D5FF" "#B24745FF" "#79AF97FF"

I could like to use #00A1D5FF #B24745FF insted.

 pal_jama("default")(5)[3:4] 
 # [1] "#00A1D5FF" "#B24745FF"

I can select them using show_col(pal_jama("default")(5)[3:4]) but how do I select in the scale_color_jama() command?

user_2080848 · Answer

One option can be scale_color_manual():

library(tidyverse)
library(ggsci)
economics_long %>% filter(variable == "psavert" | variable == "uempmed") %>%
  ggplot(aes(date, value01, colour = variable)) +
  geom_line(size = 4)  + scale_color_manual(values = pal_jama("default")(5)[3:4])

Output:

select colors in ggsci using ggplot2

1 Answers