mts_create_source: Create a Mapbox tileset source from a sf object using the...

In walkerke/mapboxapi: R Interface to 'Mapbox' Web Services

Create a Mapbox tileset source from a sf object using the Mapbox Tiling Service API

Description

The mts_create_source() function can be used to create a tileset source or append to an existing tileset source. This function publishes a simple features object you've created in R to your Mapbox account, where it is stored as line-delimited GeoJSON. A tileset source is required to create a vector tileset, and the same source can be used across multiple tilesets.

Usage

mts_create_source(data, tileset_id, username, access_token = NULL)

Arguments

data	An input simple features object
tileset_id	The tileset ID. If the tileset ID already exists in your Mapbox account, this function will overwrite the existing source with a new source.
username	Your Mapbox username
access_token	Your Mapbox access token with secret scope. Install with mb_access_token() after you retrieve it from your Mapbox account.

Value

A list of the MTS API's responses, including the name of the tileset source in your Mapbox account. You'll use this name to build a MTS recipe.

See Also

https://docs.mapbox.com/api/maps/mapbox-tiling-service/#create-a-tileset-source

Examples

## Not run: 
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")

## End(Not run)

walkerke/mapboxapi documentation built on Sept. 26, 2024, 6:26 p.m.