Aggregate Individual Survey Data and Extract Gamma Parameters by Location

This script aggregates the individual Survey data to location level and extracts the gamma parameters for the locations.

Usage

aggregate_and_extract_gamma(
  data,
  lat_column = "lat",
  long_column = "long",
  age_column = "ageyrs",
  urban_column = "urban"
)

Arguments

data

Data frame containing individual-level age data with coordinates and urban/rural classification.

lat_column

Column name for latitude coordinates (default: "lat")

long_column

Column name for longitude coordinates (default: "long")

age_column

Column name for age values (default: "ageyrs")

urban_column

Column name for urban/rural classification (default: "urban")

Value

List containing:

• outlier_free_data: Original data with added spatial coordinates, outliers removed, and clusters with less than 10 samples removed

• age_param_data: Location-level gamma parameters with columns: lon, lat, web_x, web_y, log_scale, log_shape, urban, b1, c, b2, nsampled