get_cf_dens {geocausal}

Get counterfactual densities

Description

'get_cf_dens' takes the target (expected) number, baseline density, and power density, and generates a hyperframe with counterfactual densities.

Usage

get_cf_dens(expected_number, base_dens, power_dens = NA, window)

Arguments

expected_number

the expected number of observations.

base_dens

baseline density (im object)

power_dens

power density (im object)

window

owin object

Details

There are two ways of generating counterfactual densities. First, users can keep the locations of observations as they are and change the expected number of observations. In this case, users do not have to set 'power_dens' and simply modify 'expected_number'. Alternatively, users can shift the locations as well. In this case, 'power_dens' must be specified. To obtain power densities, refer to [get_power_dens()].

Value

an im object of a counterfactual density