3 install.packages("devtools")
4 devtools::install_github("tidyverse/ggplot2") # needed for geom_sf
9 # Obtain the tax dataset if not available yet
10 if(!file.exists("data/taxstats2015individual06ataxablestatusstateterritorypostcode.csv"))
11 download.file(url = "http://data.gov.au/dataset/5c99cfed-254d-40a6-af1c-47412b7de6fe/resource/90f7f4eb-2c44-4884-96c0-01060c820cfd/download/taxstats2015individual06ataxablestatusstateterritorypostcode.csv", destfile = "data/taxstats2015individual06ataxablestatusstateterritorypostcode.csv")
12 # http://data.gov.au/dataset/5c99cfed-254d-40a6-af1c-47412b7de6fe/resource/d3189e9d-533a-4893-b6a1-758781083418/download/taxstats2015individual06btaxablestatusstateterritorypostcode.csv
14 # Obtain shapefile with Australian postal codes if not available yet
15 if(!file.exists("data/1270055003_poa_2016_aust_shape.zip"))
16 download.file(url = "http://www.abs.gov.au/ausstats/subscriber.nsf/log?openagent&1270055003_poa_2016_aust_shape.zip&1270.0.55.003&Data%20Cubes&4FB811FA48EECA7ACA25802C001432D0&0&July%202016&13.09.2016&Latest", destfile = "data/1270055003_poa_2016_aust_shape.zip")
17 # Unzip it if not done already
18 if(!file.exists("data/POA_2016_AUST.shp"))
19 unzip(zipfile = "data/1270055003_poa_2016_aust_shape.zip", exdir = "data/")
21 taxstats <- read.csv("data/taxstats2015individual06ataxablestatusstateterritorypostcode.csv", stringsAsFactors = FALSE)
22 taxstats <- dplyr::filter(taxstats, Taxable.status == "Taxable")
23 POA <- st_read(dsn = "data/", layer = "POA_2016_AUST", stringsAsFactors = FALSE)
25 taxstats.POA <- merge(x = taxstats, y = POA, by.x = "Postcode", by.y = "POA_CODE16", all.y = TRUE)
27 taxstats.POA$incomeperearningcapita <- taxstats.POA$`Total.Income.or.Loss..` / taxstats.POA$Total.Income.or.Loss.no.
28 # Postal codes turn out not to be too interesting, as they're way more granular around
29 # big cities - making the high income postal codes invisible on the chart below
30 ggplot(taxstats.POA) +
31 geom_sf(aes(fill = incomeperearningcapita, color = incomeperearningcapita)) +
32 scale_fill_viridis("incomeperearningcapita") +
33 scale_color_viridis("incomeperearningcapita")
36 if(!file.exists("data/1270055001_sa3_2016_aust_shape.zip"))
37 download.file(url = "http://www.abs.gov.au/AUSSTATS/subscriber.nsf/log?openagent&1270055001_sa3_2016_aust_shape.zip&1270.0.55.001&Data%20Cubes&43942523105745CBCA257FED0013DB07&0&July%202016&12.07.2016&Latest", destfile = "data/1270055001_sa3_2016_aust_shape.zip")
39 if(!file.exists("data/SA3_2016_AUST.shp"))
40 unzip(zipfile = "data/1270055001_sa3_2016_aust_shape.zip", exdir = "data/")
42 sa3 <- st_read(dsn = "data/", layer = "SA3_2016_AUST", stringsAsFactors = FALSE)
43 taxstats.sa3 <- merge(x = taxstats, y = sa3, by.x = "Postcode", by.y = "POA_CODE16", all.y = TRUE)
45 # Create a matrix of intersecting postal codes and SA3's
47 POA_SAs <- st_intersects(x=sa3, y=POA, sparse=FALSE)
48 taxstats.POA$`Total.Income.or.Loss..`[is.na(taxstats.POA$`Total.Income.or.Loss..`)] <- 0
49 taxstats.POA$`Total.Income.or.Loss.no.`[is.na(taxstats.POA$`Total.Income.or.Loss.no.`)] <- 0
50 # Perform matrix multiplication to obtain the income metrix per SA3
51 # Total income will be incorrect, as the POAs intersect with multiple SA3s
52 sa3$TotalIncome <- as.vector(POA_SAs %*% as.matrix(taxstats.POA$`Total.Income.or.Loss..`))
53 sa3$TotalIncomeEarners <- as.vector(POA_SAs %*% as.matrix(taxstats.POA$`Total.Income.or.Loss.no.`))
54 sa3$incomeperearningcapita <- (sa3$TotalIncome / sa3$TotalIncomeEarners)/1000
56 # As SA3s are still to narrow around cities compared to in the country,
57 # let's simply look at Melbourne
59 ggplot(dplyr::filter(sa3, data.table::`%like%`(GCC_NAME16, "Melbourne") )) +
60 geom_sf(aes(fill = incomeperearningcapita, color = incomeperearningcapita)) +
61 scale_fill_viridis(name = "") +
62 scale_color_viridis(name = "") +
63 coord_sf(datum = NA) + # Work around https://github.com/tidyverse/ggplot2/issues/2071 to remove gridlines
64 labs(title = "Melbourne \nincome distribution",
65 subtitle = "2014/15, in 1000s AUD",
66 caption = "\nSource: Australian Taxation Office") +
68 theme(legend.position = "bottom",
69 legend.text = element_text(angle = 45, hjust = 1, size = 8),
70 axis.text = element_blank(),
71 axis.ticks = element_blank())