Below is the sample data, manipulations, and ggplot code. My question is how I would dictate the backgroound color for each of these facets or items? I know how to make it all one color or such but am fumbling around trying to find out how to make them three separate colors?
#Data generation
Month1 <- c(201811,201812,20191,20192,20193,20194,20195,20196,
20197,20198,20199,201910,201911,201912,20201
,20202,20203,20204,20205,20206,20207
,20208,20209,202010,202011)
Rate <-
c(3.2,3.3,3.4,3.1,3.0,3.1,2.9,2.6,2.5,2.3,2.1,1.6,1.7,1.5,1.7,1.1,-0.4,
-19.5,-17.6,-10.5,-9.6,-9.1,-8.6,-8.0,-7.7)
cesyoym <- data.frame(Month1,Rate)
#Chart
library(ggplot2)
library(dplyr)
library(lubridate)
library(scales)
library(odbc)
##date
linechartm<-cesyoym %>%
mutate(year = substr(as.character(Month1),1,4),
month = substr(as.character(Month1),5,7),
date = as.Date(paste(year,month,"1",sep ="-"))) %>%
ggplot() +
geom_line(aes(x = date, y = Rate)) +
geom_rect(xmin = -Inf, ymin = -Inf, xmax = Inf, ymax = Inf, alpha = 0.1, aes(fill = year)) +
facet_wrap(~year, scales = "free_x") +
scale_y_continuous(labels = scales::percent) +
scale_x_date(date_breaks="1 month", date_labels="%b
") +
ggtitle("Employment Growth (%)") +
theme(panel.grid.major = element_blank(),
axis.text.x = element_text(angle = 90, size = rel(0.6)),
panel.spacing = unit(0, "lines"),
strip.placement = 'outside',
strip.background = element_blank()) +
scale_fill_brewer(palette = "Spectral") +
guides(fill = FALSE)
print(linechartm)
question from:
https://stackoverflow.com/questions/65907058/how-to-have-each-facet-be-a-different-color-in-ggplot 
