Ringkasan Bab 2

Peta Interaktif dengan leaflet di R

Rich Majerus

Vice President of Strategy & Planning, Queens University of Charlotte

Posisi Terakhir Kita

leaflet() %>% 
    addProviderTiles("CartoDB") %>% 
    addMarkers(lng = dc_hq$lon, lat = dc_hq$lat, popup = dc_hq$hq)

Peta akhir bab satu

Merapikan Peta Dasar

m <- m %>% 
    setView(lat = 50.881363, 
            lng = 4.717863,
            zoom = 5)

Contoh ClearBounds() 1

# Pulihkan tampilan berdasarkan
# data yang ditampilkan di peta
m  %>%
    clearBounds()

Contoh ClearBounds() 2

Merapikan Peta Dasar

# Pulihkan tampilan berdasarkan
# data yang ditampilkan di peta
m  %>%
    clearBounds()

Contoh clearMarkers() 1

# Hapus penanda
m  %>%
    clearBounds() %>% 
    clearMarkers()

Contoh clearMarkers() 2

IPEDS

Integrated Postsecondary Education Data System (IPEDS)
Dikelola oleh National Center for Education Statistics (NCES)
Data dari semua institusi peserta program bantuan keuangan mahasiswa federal
- college
- universitas
- institusi teknis dan vokasional

Himpunan Data IPEDS Kita

> glimpse(ipeds)

Observations: 3,146
Variables: 5
$ name         <chr> "A T Still University of Health Sciences",...
$ lng          <dbl> -92.58918, -99.70954, -83.52828, -93.29968, ...
$ lat          <dbl> 40.19365, 32.46915, 31.48189, 44.85621, 29.65008, ...
$ state        <chr> "MO", "TX", "GA", "MN", "FL", "CA", "CA", "CA",... 
$ sector_label <chr> "Private", "Private", "Public", "For-Profit", ...

Himpunan Data IPEDS Kita

ipeds %>% group_by(state) %>% count %>% arrange(desc(n))

# A tibble: 56 x 2
# Groups:   state [56]
   state     n
   <chr> <int>
 1    CA   286
 2    NY   239
 3    PA   164
 4    FL   160
 5    TX   157

Arah Bab 2

Saring data untuk college di California
Petakan semua college di California
Gunakan penanda lingkaran, bukan pin
Warnai penanda berdasarkan sektor

College California menurut sektor

Ayo berlatih!

Peta Interaktif dengan leaflet di R