Created
September 19, 2022 12:49
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# demo: scraping | |
library(httr) | |
r = GET('https://opendata.cbs.nl/ODataApi/odata/85275NED/UntypedDataSet') | |
r$status_code | |
content(r, as="text") |> str_sub(end=500) |> cat() | |
d = content(r, as="parsed") |> as_tibble() | |
# demo: cbs data | |
# zie: https://opendata.cbs.nl/statline/#/CBS/nl/dataset/70072ned/table | |
kerncijfers = cbs_get_data("70072ned", RegioS=has_substring("GM"), Perioden="2020JJ00") | |
colnames(kerncijfers) | |
d = kerncijfers |> select(statcode=RegioS, | |
inkomen=ParticuliereHuishoudensExclStudenten_122, | |
vermogen=ParticuliereHuishoudensExclStudenten_132, | |
woning=WoningbezitEigenWoning_140, | |
populatie=TotaleBevolking_1) |> | |
mutate(woningperc=woning/vermogen) | |
ggplot(d, aes(x=inkomen, y=vermogen)) + geom_point() | |
# Demo: join aan metadata | |
meta = cbs_get_meta("70072ned") | |
regios = meta$RegioS |> select(statcode=Key, gemeente=Title) |> as_tibble() | |
inner_join(d, regios) | |
# demo: map data | |
library(sf) | |
map = st_read("https://geodata.nationaalgeoregister.nl/cbsgebiedsindelingen/wfs?request=GetFeature&service=WFS&version=2.0.0&typeName=cbs_gemeente_2020_gegeneraliseerd&outputFormat=json") | |
head(map) | |
ggplot(map) + geom_sf() + theme_minimal() | |
# demo: join en map | |
inner_join(map, d) |> | |
ggplot() + geom_sf(aes(fill=inkomen)) + theme_minimal() | |
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