avg_by_prec

Takes a column of a <code>redist_plans</code> object and averages it across a set of
<code>draws</code> for each precinct.

Enables researchers to sample redistricting plans from a pre-specified
target distribution using Sequential Monte Carlo and Markov Chain Monte Carlo
algorithms. The package allows for the implementation of various constraints in
the redistricting process such as geographic compactness and population parity
requirements. Tools for analysis such as computation of various summary statistics
and plotting functionality are also included. The package implements the SMC
algorithm of McCartan and Imai (2023) <doi:10.1214/23-AOAS1763>, the enumeration
algorithm of Fifield, Imai, Kawahara, and Kenny (2020) <doi:10.1080/2330443X.2020.1791773>,
the Flip MCMC algorithm of Fifield, Higgins, Imai and Tarr (2020) <doi:10.1080/10618600.2020.1739532>,
the Merge-split/Recombination algorithms of Carter et al. (2019) <arXiv:1911.01503>
and DeFord et al. (2021) <doi:10.1162/99608f92.eb30390f>, and the Short-burst
optimization algorithm of Cannon et al. (2020) <arXiv:2011.02288>.

Christopher T. Kenny

redist

Simulation Methods for Legislative Redistricting

Cory McCartan

Ben Fifield

Kosuke Imai

Jun Kawahara

Alexander Tarr

Michael Higgins

avg_by_prec function

<dl><dt>plans</dt>
<dd>a <code>redist_plans</code> object</dd>
<dt>x</dt>
<dd>an expression to average. Tidy-evaluated in <code>plans</code>.</dd>
<dt>draws</dt>
<dd>which draws to average. <code>NULL</code> will average all draws, including
reference plans. The special value <code>NA</code> will average all sampled draws. An
integer, logical, or character vector indicating specific draws may also be
provided.</dd></dl>

Arguments

Average a variable by precinct — avg_by_prec

<dl>

<dt>plans</dt>
<dd>a <code>redist_plans</code> object</dd>


<dt>x</dt>
<dd>an expression to average. Tidy-evaluated in <code>plans</code>.</dd>


<dt>draws</dt>
<dd>which draws to average. <code>NULL</code> will average all draws, including
reference plans. The special value <code>NA</code> will average all sampled draws. An
integer, logical, or character vector indicating specific draws may also be
provided.</dd>

</dl>

avg_by_prec: Average a variable by precinct

Description

Usage

Value

Arguments