rmvnorm_prec

Sample $$x \sim N(Q^{-1} b, Q^{-1})$$ where $Q$ is symmetric positive definite.

internal

Tools for simulating and modeling traffic flow on road networks
using spatial conditional autoregressive (CAR) models. The package
represents road systems as graphs derived from 'OpenStreetMap' data
<https://www.openstreetmap.org/> and
supports network-based spatial dependence, basic preprocessing, and
visualization for spatial traffic analysis.

Madison Ell

trafficCAR

Bayesian CAR Models for Road-Segment Traffic

rmvnorm_prec function

<dl><dt>Q</dt>
<dd>Sparse symmetric positive definite precision matrix (dgCMatrix).</dd>
<dt>b</dt>
<dd>Optional numeric vector. If NULL, mean is 0.</dd></dl>

Arguments

Draw from a multivariate normal with sparse precision — rmvnorm_prec

<dl>

<dt>Q</dt>
<dd>Sparse symmetric positive definite precision matrix (dgCMatrix).</dd>


<dt>b</dt>
<dd>Optional numeric vector. If NULL, mean is 0.</dd>

</dl>

rmvnorm_prec: Draw from a multivariate normal with sparse precision

Description

Usage

Value

Arguments