R Markdown

library(ggridges)
library(ggplot2)
library(viridis)
## Loading required package: viridisLite
library(hrbrthemes)
## NOTE: Either Arial Narrow or Roboto Condensed fonts are required to use these themes.
##       Please use hrbrthemes::import_roboto_condensed() to install Roboto Condensed and
##       if Arial Narrow is not on your system, please see https://bit.ly/arialnarrow
unemployment = read.csv('/Users/yangweijie/Desktop/unemployment.csv')
ggplot(unemployment, aes(x = `Unemployment.Rate.in.London`, y = `Year`, fill = ..x..)) +
  geom_density_ridges_gradient(scale = 2.5, rel_min_height = 0.01) +
  scale_fill_viridis(name = "Rate(%)", option = "D") + 
  labs(title = 'Unemployment Rate in London (2010-2020)') + 
  labs(x="Unemployment Rate(%)",y="Year") + 
  theme(
    legend.position="none",
    panel.spacing = unit(0.2, "lines"),
    strip.text.x = element_text(size = 8)
  ) + theme_ipsum()
## Picking joint bandwidth of 0.171