Produces plots of geographic regions defined by polygons, optionally filling the 
polygons with a color or grey shade dependent on a covariate.

polys.plot

Generalized additive (mixed) models, some of their extensions and
other generalized ridge regression with multiple smoothing
parameter estimation by (Restricted) Marginal Likelihood,
Cross Validation and similar, or using iterated nested Laplace
approximation for fully Bayesian inference. See Wood (2025)
<doi:10.1146/annurev-statistics-112723-034249> for an overview.
Includes a gam() function, a wide variety of smoothers, 'JAGS'
support and distributions beyond the exponential family.

Simon Wood

mgcv

Mixed GAM Computation Vehicle with Automatic Smoothness
Estimation

polys.plot function

Plot geographic regions defined as polygons — polys.plot

<dl>

 <dt>pc</dt>
<dd>A named list of matrices. Each matrix has two columns. The matrix rows each define the 
 vertex of a boundary polygon. If a boundary is defined by several polygons, then each of these must be 
 separated by an <code>NA</code> row in the matrix. See <code>mrf</code> for an example.</dd>


 <dt>z</dt>
<dd>A vector of values associated with each area (item) of <code>pc</code>. If the vector elements 
 have names then these are used to match elements of <code>z</code> to areas defined in <code>pc</code>. Otherwise 
 <code>pc</code> and <code>z</code> are assumed to be in the same order. If <code>z</code> is <code>NULL</code> then polygons are not filled.</dd>


 <dt>scheme</dt>
<dd>One of <code>"heat"</code> or <code>"grey"</code>, indicating how to fill the polygons in accordance with the value
 of <code>z</code>.</dd>


 <dt>lab</dt>
<dd>label for plot.</dd>

 
 <dt>...</dt>
<dd>other arguments to pass to plot (currently only if <code>z</code> is <code>NULL</code>).</dd>



</dl>

Arguments

Simon Wood <a href='mailto:simon.wood@r-project.org'>simon.wood@r-project.org</a>

polys.plot: Plot geographic regions defined as polygons

Description

Usage

Arguments

Value

Details

See Also

Examples