Package data

DESCRIPTION

@@ -32,3 +32,6 @@ Config/testthat/edition: 3
 Encoding: UTF-8
 Roxygen: list(markdown = TRUE)
 RoxygenNote: 7.3.2
+Depends: 
+    R (>= 2.10)
+LazyData: true

R/data.R

@@ -0,0 +1,11 @@
+#' CRiSp example data for Bucharest
+#'
+#' Data extracted from OpenStreetMap for examples used in the CRiSp package.
+#'
+#' @format A list with the following components:
+#' \describe{
+#'  \item{boundary}{A sf object representing the administrative boundary of
+#'                  Bucharest.}
+#' }
+#' @source OpenStreetMap
+"bucharest"

data-raw/bucharest.R

@@ -0,0 +1,44 @@
+library(CRiSp)
+library(osmdata)
+library(dplyr)
+library(sf)
+
+city_name <- "Bucharest"
+river_name <- "Dâmbovița"
+epsg_code <- 32635
+bbox_buffer <- 2000
+
+city_boundary <- get_osm_city_boundary(city_name) |>
+  st_transform(epsg_code)
+
+bb <- getbb(city_name)
+aoi <- define_aoi(bb, epsg_code, bbox_buffer)
+
+river_centerline <- osmdata_as_sf("waterway", "river", bb)$osm_multilines |>
+  filter(name == river_name) |>
+  st_transform(epsg_code) |>
+  st_geometry() |>
+  st_intersection(st_buffer(aoi, bbox_buffer))
+
+river_surface <- osmdata_as_sf("natural", "water", bb)
+river_surface <- river_surface$osm_multipolygons |>
+  bind_rows(river_surface$osm_polygons) |>
+  st_transform(epsg_code) |>
+  st_filter(river_centerline, .predicate = st_intersects) |>
+  st_geometry() |>
+  st_union()
+
+highway_values <- c("motorway", "primary", "secondary", "tertiary")
+streets <- osmdata_as_sf("highway", highway_values, bb)
+streets <- merge_streets(streets) |>
+  select("highway")
+
+bucharest <- list(
+  bb = bb,
+  boundary = city_boundary,
+  river_centerline = river_centerline,
+  river_surface = river_surface,
+  streets = streets
+)
+
+usethis::use_data(bucharest, overwrite = TRUE)