country-zooms-tilezen.md

README.md

Converting country zooms from tilezen to protomaps resources/country-zooms.csv

Clone https://github.com/tilezen/vector-datasource/, go to spreadsheets/min_zooms

download place=country from overpass-turbo to the the wikidata ids of the countries and other properties, store in countries.geojson

save the following to country.py

# country.py
import yaml

# Read the YAML content from a file
with open("country.yaml", "r") as file:
    yaml_content = file.read()

# Parse the YAML content
country_names = {}
current_country_name = None

# First pass to extract comments containing country names
for line in yaml_content.splitlines():
    line = line.strip()
    if line.startswith('#'):
        # Store the country name from comment
        current_country_name = line[1:].strip()
    elif ':' in line and not line.startswith(' '):
        # This is a country code line
        country_code = line.split(':')[0].strip()
        if current_country_name:
            country_names[country_code] = current_country_name
            current_country_name = None

# Parse the actual YAML data
data = yaml.safe_load(yaml_content)

# Create the list of dictionaries with the required format
tilezen_countries = []
for country_code, country_data in data.items():
    country_dict = {
        "code": country_code,
        "min_zoom": round(country_data.get("min_zoom")) - 1,
        "max_zoom": round(country_data.get("max_zoom")) - 1,
        "name": country_names.get(country_code, "Unknown")
    }
    tilezen_countries.append(country_dict)

# # Print the list as JSON
# for country in countries_list:
#     print(f'{round(country["min_zoom"]) - 1}, {round(country["max_zoom"]) - 1}, {country["code"]}, {country["name"]}')

import json
with open('countries.geojson') as f:
    osm_countries = json.load(f)["features"]

def get_osm_by_name(tilezen_country, osm_countries):
    result = []
    for osm_country in osm_countries:
        key = "name:en"
        if key in osm_country["properties"] and tilezen_country["name"] == osm_country["properties"][key]:
            result.append(osm_country)
    return result

def get_osm_by_code(tilezen_country, osm_countries):
    result = []
    for osm_country in osm_countries:
        key = "ISO3166-1:alpha2"
        if key in osm_country["properties"] and tilezen_country["code"] == osm_country["properties"][key]:
            result.append(osm_country)
    return result

def get_osm_by_code_alt(tilezen_country, osm_countries):
    result = []
    for osm_country in osm_countries:
        key = "country_code_iso3166_1_alpha_2"
        if key in osm_country["properties"] and tilezen_country["code"] == osm_country["properties"][key]:
            result.append(osm_country)
    return result

for tilezen_country in tilezen_countries:
    
    matches = [
        get_osm_by_name(tilezen_country, osm_countries),
        get_osm_by_code(tilezen_country, osm_countries),
        get_osm_by_code_alt(tilezen_country, osm_countries)
    ]

    wikidatas = []
    for match in matches:
        if len(match) > 0 and "wikidata" in match[0]["properties"]:
            wikidatas.append(match[0]["properties"]["wikidata"])
        else:
            wikidatas.append("")
    

    wikidatas = set(wikidatas)
    if "" in wikidatas:
        wikidatas.remove("")
    
    wikidatas = list(wikidatas)

    wikidata = wikidatas[0] if len(wikidatas) == 1 else None

    if wikidata:
        print(f'{wikidata},{tilezen_country["min_zoom"]},{tilezen_country["max_zoom"]}')

run python3 country.py

countries.geojson