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#' Germany Class for downloading, cleaning and processing notification data
#'
#' @description Information for downloading, cleaning
#' and processing COVID-19 region level 1 and 2 data for Germany.
#'
# nolint start
#' @source \url{https://opendata.arcgis.com/datasets/dd4580c810204019a7b8eb3e0b329dd6_0.csv}
# nolint end
#' @export
#' @concept dataset
#' @family subnational
#' @examples
#' \dontrun{
#' region <- Germany$new(verbose = TRUE, steps = TRUE, level = "2", get = TRUE)
#' region$return()
#' }
Germany <- R6::R6Class("Germany",
inherit = DataClass,
public = list(
# Core Attributes
#' @field origin name of origin to fetch data for
origin = "Germany",
#' @field supported_levels A list of supported levels.
supported_levels = list("1", "2"),
#' @field supported_region_names A list of region names in order of level.
supported_region_names = list("1" = "bundesland", "2" = "landkreis"),
#' @field supported_region_codes A list of region codes in order of level.
supported_region_codes = list("1" = "iso_3166_2"),
#' @field common_data_urls List of named links to raw data. The first, and
#' only entry, is be named main.
# nolint start
common_data_urls = list(
"main" = "https://opendata.arcgis.com/datasets/dd4580c810204019a7b8eb3e0b329dd6_0.csv"
),
# nolint end
#' @field source_data_cols existing columns within the raw data
source_data_cols = c("cases_new", "deaths_new"),
#' @field source_text Plain text description of the source of the data
source_text = "Robert Koch-Institut (RKI)",
#' @field source_url Website address for explanation/introduction of the
#' data
source_url = "https://hub.arcgis.com/datasets/dd4580c810204019a7b8eb3e0b329dd6_0/explore", # nolint
#' @description Set up a table of region codes for clean data
#' @importFrom dplyr tibble
set_region_codes = function() {
self$codes_lookup$`1` <- tibble(
code = c(
"DE-BB", "DE-BE", "DE-BW", "DE-BY", "DE-HB", "DE-HE", "DE-HH",
"DE-MV", "DE-NI", "DE-NW", "DE-RP", "DE-SH", "DE-SL", "DE-SN",
"DE-ST", "DE-TH"
),
region = c(
"Brandenburg", "Berlin", "Baden-W\u00FCrttemberg", "Bayern",
"Bremen", "Hessen", "Hamburg", "Mecklenburg-Vorpommern",
"Niedersachsen", "Nordrhein-Westfalen", "Rheinland-Pfalz",
"Schleswig-Holstein", "Saarland", "Sachsen", "Sachsen-Anhalt",
"Th\u00FCringen"
)
)
},
#' @description Common Data Cleaning
#' @importFrom dplyr select mutate
#' @importFrom lubridate as_date ymd_hms
clean_common = function() {
self$data$clean <- self$data$raw[["main"]] %>%
select(
date = .data$Meldedatum,
level_1_region = .data$Bundesland,
level_2_region = .data$Landkreis,
cases_new = .data$AnzahlFall,
deaths_new = .data$AnzahlTodesfall
) %>%
mutate(date = as_date(ymd_hms(.data$date))) %>%
left_join(
self$codes_lookup$`1`,
by = c("level_1_region" = "region")
) %>%
mutate(
level_1_region_code = .data$code,
)
},
#' @description Bundesland Level Data Cleaning
#' @importFrom dplyr group_by summarise ungroup full_join
clean_level_1 = function() {
self$data$clean <- self$data$clean %>%
group_by(
.data$level_1_region, .data$level_1_region_code,
.data$date
) %>%
summarise(
cases_new = as.numeric(sum(.data$cases_new)),
deaths_new = as.numeric(sum(.data$deaths_new))
) %>%
ungroup()
},
#' @description Landkreis Level Data Cleaning
#' @importFrom dplyr mutate group_by summarise ungroup full_join
#'
clean_level_2 = function() {
self$data$clean <- self$data$clean %>%
mutate(
level_2_region = gsub("(^[SL]K) (.*)", "\\2 \\(\\1\\)",
.data$level_2_region,
fixed = FALSE
)
) %>%
group_by(
.data$level_1_region, .data$level_1_region_code,
.data$level_2_region, .data$date
) %>%
summarise(
cases_new = as.numeric(sum(.data$cases_new)),
deaths_new = as.numeric(sum(.data$deaths_new))
) %>%
ungroup()
}
)
)
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