spReapportion: Reapportion data from one geography to another
In joelgombin/spReapportion: Reapportion Data From one Geography to Another

Description Usage Arguments Note Author(s)

View source: R/spReapportion.R

This function allows to reapportion data from one geography to another, for example in the context of working with different administrative units.

spReapportion(old_geom, new_geom, data, old_ID, new_ID, data_ID,
  variables = names(data)[-which(names(data) %in% data_ID)],
  mode = "count", weights = NULL, weight_matrix = NULL,
  weight_matrix_var = NULL)

`old_geom`	a 'SpatialPolygonsDataFrame' representing the initial geometry.
`new_geom`	a 'SpatialPolygonsDataFrame' representing the geometry you want to reapportion data to.
`data`	a 'data.frame' containing the data to reapportion, and an ID allowing to match it to the 'old_geom'.
`old_ID`	a string, the name of the ID variable in the 'old_geom'.
`new_ID`	a string, the name of the ID variable in the 'new_geom'.
`data_ID`	a string, the name of the ID variable in the 'data'.
`variables`	a character vector, representing the names of the variables in the 'data' set to reapportion. By default, all data variables except for the ID.
`mode`	either '"count"' or '"proportion"'. '"count"' is for absolute values, '"proportion"' is for, well, proportions (expressed between 0 and 1). If '"proportion"', you need to provide a weights variable.
`weights`	In case the variables are proportions, the name of the variable containing weights (i.e. the total number of observations per unit in the 'old_geom').
`weight_matrix`	a SpatialPointsDataFrame indicating where are the observations (inhabitants, voters, etc.) (optional).
`weight_matrix_var`	the name of the variable in `weight_matrix` containing the weights.

Inspiration from http://stackoverflow.com/a/17703903 and http://rstudio-pubs-static.s3.amazonaws.com/6577_3b66f8d8f4984fb2807e91224defa854.html. All mistakes are mine, obviously.

Joel Gombin

joelgombin/spReapportion documentation built on May 19, 2019, 3 p.m.