Usage

compare_maps(
  data_list,
  fill_var,
  title = NULL,
  ncol = NULL,
  palette = "viridis",
  common_scale = TRUE,
  show_state_boundaries = TRUE,
  ...
)

Arguments

data_list: A named list of sf data frames, with names as years
fill_var: The variable to map (string)
title: Overall title for the combined plot
ncol: Number of columns for arrangement
palette: Color palette (see plot_map for options)
common_scale: Logical. Use the same color scale across all maps?
show_state_boundaries: Logical. Overlay state boundaries?
...: Additional arguments passed to plot_map

Value

A patchwork object

Examples

if (FALSE) { # \dontrun{
# Compare ST percentage across years
library(dplyr)

# Prepare 1971 data
data(census_1971)
st_1971 <- census_1971 |>
  filter(geography == "district") |>
  mutate(st_pct = 100 * st_population_total / population_total) |>
  attach_geometry(1971)

# Prepare 2011 data
data(census_2011_pca)
st_2011 <- census_2011_pca |>
  mutate(st_pct = 100 * st_population / population_total) |>
  attach_geometry(2011)

# Compare
compare_maps(
  list("1971" = st_1971, "2011" = st_2011),
  fill_var = "st_pct",
  title = "ST Population % by District",
  palette = "red_blue"
)
} # }