get_base_dens: Get the baseline density

In geocausal: Causal Inference with Spatio-Temporal Data

Get the baseline density

Description

'get_base_dens()' takes a dataframe and returns the baseline densities using Scott's rule of thumb (out-of-sample data) or fitting an inhomogeneous Poisson model (in-sample data) by regressing the in-sample data on time-invariant covariates.

Usage

get_base_dens(
  window,
  option,
  ndim = 256,
  out_data,
  out_coordinates = c("longitude", "latitude"),
  hfr,
  dep_var,
  indep_var,
  ratio
)

Arguments

window	owin object
option	"in" (using in-sample data) or "out" (using out-of-sample data)
ndim	the number of dimensions of grid cells (ndim^2). By default, ndim = 256.
out_data	dataframe (if using out-of-sample data)
out_coordinates	vector of column names of longitudes and latitudes (in this order) (if using in-sample data)
hfr	hyperframe (if using in-sample data)
dep_var	the name of the dependent variable (if using in-sample data)
indep_var	the names of time-invariant independent varaibles (if using in-sample data)
ratio	for random sampling of data (if using in-sample data)

Value

an im object of baseline density

geocausal documentation built on April 3, 2025, 8:46 p.m.