aggPixelPreds: Helper function of 'pixelPopToArea'

In SUMMER: Small-Area-Estimation Unit/Area Models and Methods for Estimation in R

Helper function of pixelPopToArea

Description

Aggregates population from the pixel level to the level of the area of interest.

Usage

aggPixelPreds(
  Zg,
  Ng,
  areas,
  urban = target.pop.mat$urban,
  target.pop.mat = NULL,
  use.density = FALSE,
  stratify.by.urban = TRUE,
  normalize = use.density
)

Arguments

Zg	nIntegrationPoint x nsim matrix of simulated response (population numerators) for each pixel and sample
Ng	nIntegrationPoint x nsim matrix of simulated counts (population denominators) for each pixel and sample
areas	nIntegrationPoint length character vector of areas (or subareas)
urban	nIntegrationPoint length vector of indicators specifying whether or not pixels are urban or rural
target.pop.mat	same as in simPopCustom
use.density	whether to use population density as aggregation weights.
stratify.by.urban	whether or not to stratify simulations by urban/rural classification
normalize	if TRUE, pixel level aggregation weights within specified area are normalized to sum to 1. This produces an average of the values in Zg rather than a sum. In general, should only be set to TRUE for smooth integrals of risk.

SUMMER documentation built on April 4, 2025, 3:11 a.m.