redist.prep.polsbypopper

Prep Polsby Popper Perimeter Dataframe

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 (2020) <arXiv:2008.06131>, 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

redist.prep.polsbypopper function

<dl><dt>shp</dt>
<dd>A SpatialPolygonsDataFrame or sf object. Required unless "EdgesRemoved"
and "logSpanningTree" with adjacency provided.</dd>
<dt>planarize</dt>
<dd>a number, indicating the CRS to project the shapefile to if
it is latitude-longitude based. Set to FALSE to avoid planarizing.</dd>
<dt>perim_path</dt>
<dd>A path to save an Rds</dd>
<dt>ncores</dt>
<dd>the number of cores to parallelize over</dd></dl>

Arguments

Prep Polsby Popper Perimeter Dataframe — redist.prep.polsbypopper

<dl>

<dt>shp</dt>
<dd>A SpatialPolygonsDataFrame or sf object. Required unless "EdgesRemoved"
and "logSpanningTree" with adjacency provided.</dd>


<dt>planarize</dt>
<dd>a number, indicating the CRS to project the shapefile to if
it is latitude-longitude based. Set to FALSE to avoid planarizing.</dd>


<dt>perim_path</dt>
<dd>A path to save an Rds</dd>


<dt>ncores</dt>
<dd>the number of cores to parallelize over</dd>

</dl>

redist.prep.polsbypopper: Prep Polsby Popper Perimeter Dataframe

Description

Usage

Value

Arguments

Examples