Visualize constraints — plot.redist

Plots the constraint strength versus some running variable. Currently supports visualizing the grp_hinge, grp_inv_hinge, and grp_pow constraints.

# S3 method for redist_constr
plot(x, y, type = "group", xlim = c(0, 1), ...)

Arguments

x: A redist_constr object.
y: Ignored.
type: What type of constraint to visualize. Currently supports only "group", for visualizing constraint strength by group share.
xlim: Range of group shares to visualize.
...: additional arguments (ignored)

Value

A ggplot object

Examples

data(iowa)
iowa_map <- redist_map(iowa, existing_plan = cd_2010, pop_tol = 0.05)
constr <- redist_constr(iowa_map)
constr <- add_constr_grp_hinge(constr, strength = 30,
                               dem_08, tot_08, tgts_group = 0.5)
constr <- add_constr_grp_hinge(constr, strength = -20,
                               dem_08, tot_08, tgts_group = 0.3)
plot(constr)