eechidna (version 1.4.1)

mapping_fn: Compute areas of intersection between each election boundary and those in the Census of interest. This is a less refined method than using SA1 centroids.

Description

At the time of an election, compute how much each electoral division intersects with the divisions in place at the time of the Census. This is to be used in interpolating Census information for electoral divisions in a year that a Census did not occur.

Usage

mapping_fn(aec_sF, abs_sF, area_thres = 0.995)

Arguments

aec_sF

shapefile with boundaries at election time

abs_sF

shapefile with boundaries at census time

area_thres

threshold for which mapping is sufficient (default is 99.5%)

Value

data frame detailing how much Census divisions intersect with each electoral division at the time of the election.

Examples

# NOT RUN {
# Each 2013 electorate boundary's composition in terms of the 
# boundaries in place for the 2016 Census
aec_sF_2013 <- loadShapeFile(path_to_aec_shapefile)
abs_sF_2016 <- loadShapeFile(path_to_abs_shapefile)

mapping_df <- mapping_fn(aec_sF = aec_sF_2013, abs_sF = abs_sF_2016, area_thres = 0.995)
# }