Prepare a formatted recipe layer for use in a Mapbox Tiling Service recipe
Source:R/mts.R
recipe_layer.Rd
Prepare a formatted recipe layer for use in a Mapbox Tiling Service recipe
Usage
recipe_layer(
source,
minzoom,
maxzoom,
features = feature_options(),
tiles = tile_options()
)
Arguments
- source
The tileset source ID. This is returned by
mts_create_source()
or can be retrieved from your Mapbox account withmts_list_sources()
.- minzoom
The minimum zoom level at which a layer can be viewed.
- maxzoom
The maximum zoom level at which a layer is rendered; the layer will still be visible past the maximum zoom level due to overzooming.
- features
A list of feature options, possibly generated with
feature_options()
.- tiles
A list of tile options, possibly generated with
tile_options()
Value
A recipe layer list to be used in mts_make_recipe()
.
Examples
if (FALSE) { # \dontrun{
library(tidycensus)
library(mapboxapi)
options(tigris_use_cache = TRUE)
# Get the national data on median age
us_median_age_tract <- get_acs(
geography = "tract",
variables = "B01002_001",
state = c(state.abb, "DC"),
year = 2020,
geometry = TRUE
)
# Get it for counties as well
us_median_age_county <- get_acs(
geography = "county",
variables = "B01002_001",
year = 2020,
geometry = TRUE
)
# Create a source from the datasets
mts_create_source(data = us_median_age_tract,
tileset_id = "us_median_age_tract",
username = "your_mapbox_username")
mts_create_source(data = us_median_age_county,
tileset_id = "us_median_age_county",
username = "your_mapbox_username")
# Build out the recipe. First, create a recipe layer with
# appropriate options. We'll want a larger tile size and to restrict the minzoom
# to 4; a maxzoom of 12 will be fine as we can overzoom beyond that
#
# Your source ID will be returned by `mts_create_source()`, so use that value
tract_layer <- recipe_layer(
source = "mapbox://tileset-source/your_mapbox_username/us_median_age_tract",
minzoom = 4,
maxzoom = 12,
tiles = tile_options(layer_size = 2500)
)
county_layer <- recipe_layer(
source = "mapbox://tileset-source/your_mapbox_username/us_median_age_county",
minzoom = 2,
maxzoom = 5
)
recipe <- mts_make_recipe(tracts = tract_layer, counties = county_layer)
# Validate the recipe
mts_validate_recipe(recipe)
# Create a tileset from the recipe
mts_create_tileset(tileset_name = "median_age_acs",
username = "your_mapbox_username",
recipe = recipe)
# Publish the tileset
mts_publish_tileset(tileset_name = "median_age_acs",
username = "your_mapbox_username")
# If necessary, update the recipe
mts_update_recipe(tileset_name = "median_age_acs",
username = "your_mapbox_username",
recipe = new_recipe)
# Publish the tileset again after you've updated the recipe
mts_publish_tileset(tileset_name = "median_age_acs",
username = "your_mapbox_username")
} # }