redist.plot.distr_qtys: Plot quantities by district

In redist: Simulation Methods for Legislative Redistricting

Plot quantities by district

Description

Plots a boxplot of a quantity of interest across districts, with districts optionally sorted by this quantity. Adds reference points for each reference plan, if applicable.

Usage

redist.plot.distr_qtys(
  plans,
  qty,
  sort = "asc",
  geom = "jitter",
  color_thresh = NULL,
  size = 0.1,
  ref_geom,
  ref_label,
  ...
)

Arguments

plans	the redist_plans object.
qty	<data-masking> the quantity of interest.
sort	set to "asc" to sort districts in ascending order of qty (the default), "desc" for descending order, or FALSE or "none" for no sorting.
geom	the ggplot2 geom to use in plotting the simulated districts: either "jitter" or "boxplot". Can also take in a function, so long as the function accepts ....
color_thresh	if a number, the threshold to use in coloring the points. Plans with quantities of interest above the threshold will be colored differently than plans below the threshold.
size	The dot size for geom="jitter".
ref_geom	The reference plan geometry type. "line" or "point" can be passed for reasonable defaults. Can also take in a function, so long as the function accepts ....
ref_label	A human-readable name for the reference plan. By default the name in the plan column is used. This can also take in a function which returns a call to ggplot2::labs().
...	passed on to geom_boxplot

Value

A ggplot

Using ggdist

For custom functions in geom, we can also create more complicated things like rainclouds using the ggdist package. For example:

raincloud <- function(...) {
list(
    ggdist::stat_slab(aes(thickness = ggplot2::after_stat(pdf*n)), scale = 0.7),
   ggdist::stat_dotsinterval(side = "bottom", scale = 0.7,
                             slab_size = NA, quantiles = 200)
)
}

These functions can be then passed to geom.

Examples

library(dplyr)
data(iowa)

iowa <- redist_map(iowa, existing_plan = cd_2010, pop_tol = 0.05, total_pop = pop)
plans <- redist_smc(iowa, nsims = 100, silent = TRUE)
plans <- plans %>% mutate(pct_dem = group_frac(iowa, dem_08, tot_08))
redist.plot.distr_qtys(plans, pct_dem)

# It also takes custom functions:
redist.plot.distr_qtys(plans, pct_dem, geom = ggplot2::geom_violin)

# With the raincloud example, if you have `ggdist`, you can run:
# redist.plot.distr_qtys(plans, pct_dem, geom = raincloud)

# The reference geom can also be changed via `reg_geom`
r_geom <- function(...) ggplot2::geom_segment(ggplot2::aes(as.integer(.data$.distr_no) - 0.5,
                          xend = as.integer(.data$.distr_no) + 0.5,
                          yend = pct_dem,
                          color = .data$draw),
                      linewidth = 1.2, ...)



# Finally, the `ref_label` argument can also be swapped for a function, like so:
redist.plot.distr_qtys(plans, pct_dem, geom = ggplot2::geom_violin, ref_geom = r_geom,
    ref_label = function() ggplot2::labs(color = 'Ref.'))

redist documentation built on June 24, 2024, 9:10 a.m.