Generate Density Rasters from Polygon and Census Data

Creates continuous density raster surfaces by joining vector spatial layers with tabular data frameworks, normalizing values by ellipsoidal polygon area calculations. Reconciles discrete boundary-constrained census or survey counts with uniform grids. Accepts spatial objects in-memory or via file paths. Methods are based on spatial rasterization workflows implemented in the 'terra' package Hijmans (2025) < https://rspatial.github.io/terra/>.

GeoDensityR

GeoDensityR is an R package for generating density rasters from polygon shapefiles and tabular census or survey data.

The package:

joins polygon and tabular datasets
calculates density values
rasterizes polygon densities
exports ASCII or GeoTIFF rasters

Useful for:

epidemiology
ecology
livestock distribution
population density
spatial analysis
disease modeling

Installation

devtools::install_github("sahalpaladan/GeoDensityR")

Usage

library(GeoDensityR)

generate_density_raster(
  
  csv_file = "Livestock_census_GJ_RJ.csv",
  
  shp_file = "GJ_RJ_District_Shape_File.shp",
  
  join_shp = "District",
  
  join_csv = "District",
  
  value_col = "Cattle",
  
  resolution = 0.1,
  
  output = "density.asc"
  
)