有沒有辦法可以手動控制choroplethr上各種範圍之間的閾值？

Question

我希望能夠手動控制choroplethr包中的人口範圍之間的閾值。

library(choroplethr) 

data(df_pop_county)   
data(continental_us_states) 

county_choropleth(df_pop_county, 
        state_zoom = continental_us_states) 

Answer 1

您可以使用cut創建自定義遊：

# rename the original "value" column if you don't want to write over it 
names(df_pop_county) <- c("region", "original_value") 

# define the breaks you want 
df_pop_county$value <- cut(df_pop_county[["original_value"]], 
          breaks = c(0, 1e4, 5e4, 1e5, 5e5, 1e6, 1e7)) 
# if you want custom labels to go along with those breaks, then provide 
# the labels argument in cut: 
# cut(df_pop_county[["original_value"]], 
#  breaks = c(0, 1e4, 5e4, 1e5, 5e5, 1e6, 1e7), 
#  labels =c("0-9999","10000-49999", "50000-99999", "100000-499999", "500000-999999", "1000000-10000000"))