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)