1 # install libgdal-dev on debian first
2 #install.packages("rgdal")
5 #install.packages("OpenStreetMap")
9 # Read the shapefile obtained from WA opendata (SLIP)
10 shape <- readOGR(dsn = "data/", layer = "CurrentActiveSchoolsSemester12017_PublicDET_014")
11 shape.df <- tidy(shape)
12 shape.df$latitude <- as.numeric(as.character(shape.df$latitude))
13 shape.df$longitude <- as.numeric(as.character(shape.df$longitude))
14 shape.df$totalschoo <- as.numeric(as.character(shape.df$totalschoo))
16 # filter out remote islands
17 shape.df <- filter(shape.df,longitude > 100)
18 #shape.df <- filter(shape.df, totalschoo < 500)
19 # Obtain the contour box of the shape
21 lat <- c(min(shape.df$latitude), max(shape.df$latitude))
22 lon <- c(min(shape.df$longitude), max(shape.df$longitude))
24 lat.metro <- c(-32.1547, -31.8519)
25 lon.metro <- c(115.7162,116.0733)
26 upperLeft.metro <- c(-31.8519,115.7162)
27 lowerRight.metro <- c(-32.1547,116.0733)
29 # Obtain an openstreetmap background image
30 map <- openmap(upperLeft = c(lat[2],lon[1]),
31 lowerRight = c(lat[1],lon[2]),
33 type="https://stamen-tiles.a.ssl.fastly.net/toner-lite/{z}/{x}/{y}.png")
34 map.metro <- openmap(upperLeft = upperLeft.metro,
35 lowerRight = lowerRight.metro,
37 type="https://stamen-tiles.a.ssl.fastly.net/toner-lite/{z}/{x}/{y}.png")
39 mapLatLon <- openproj(map)
42 geom_point(data = shape.df,
47 scale_color_viridis(option="viridis",
48 name = "Number\nof pupils") +
49 theme(legend.position = "right",
50 axis.text = element_blank(),
51 axis.ticks = element_blank()) +
52 labs(title = "Western Australian schools",
53 caption = "Map tiles by Stamen Design, under CC BY 3.0.\nMapdata by OpenStreetMap, under ODbL.
54 School data © Government of WA 2017.\n Dep. of Education & Training.",
60 shape.metro.df <- filter(shape.df, abs(latitude) <= max(abs(lat.metro)),
61 abs(latitude) >= min(abs(lat.metro)),
62 abs(longitude) <= max(abs(lon.metro)),
63 abs(longitude) >= min(abs(lon.metro)))
64 mapLatLon.metro <- openproj(map.metro)
65 autoplot(mapLatLon.metro) +
66 geom_point(data = shape.metro.df,
71 scale_color_viridis(option="viridis",
72 name = "Number\nof pupils") +
73 theme(legend.position = "right",
74 axis.text = element_blank(),
75 axis.ticks = element_blank()) +
76 labs(title = "Western Australian schools",
77 subtitle = "Perth metro area only",
78 caption = "Map tiles by Stamen Design, under CC BY 3.0.\nMapdata by OpenStreetMap, under ODbL.
79 School data © Government of WA 2017.\n Dep. of Education & Training.",