ExcelデータをGISで地図化する方法

import requests
import csv

def geocode(address):
    """国土地理院APIでジオコーディング"""
    url = "https://msearch.gsi.go.jp/address-search/AddressSearch"
    params = {"q": address}
    response = requests.get(url, params=params)
    data = response.json()

    if data:
        coords = data[0]["geometry"]["coordinates"]
        return coords[1], coords[0]  # 緯度, 経度
    return None, None

# CSVを処理
with open('input.csv', 'r', encoding='utf-8') as infile:
    reader = csv.DictReader(infile)
    results = []

    for row in reader:
        lat, lon = geocode(row['住所'])
        row['緯度'] = lat
        row['経度'] = lon
        results.append(row)

# 結果を出力
with open('output.csv', 'w', encoding='utf-8', newline='') as outfile:
    writer = csv.DictWriter(outfile, fieldnames=results[0].keys())
    writer.writeheader()
    writer.writerows(results)

店舗名,住所,売上,従業員数
本店,東京都千代田区丸の内1-1-1,1000,50
渋谷店,東京都渋谷区道玄坂1-1-1,800,30
新宿店,東京都新宿区西新宿1-1-1,1200,40