{"id":50736,"date":"2021-05-13T00:00:00","date_gmt":"2021-05-13T07:00:00","guid":{"rendered":"https:\/\/griddb-linux-hte8hndjf8cka8ht.westus-01.azurewebsites.net\/%e6%9c%aa%e5%88%86%e9%a1%9e\/geospatial-querying-using-geohashes-and-griddb\/"},"modified":"2025-11-14T07:54:31","modified_gmt":"2025-11-14T15:54:31","slug":"geospatial-querying-using-geohashes-and-griddb","status":"publish","type":"post","link":"https:\/\/griddb-linux-hte8hndjf8cka8ht.westus-01.azurewebsites.net\/ja\/%e6%9c%aa%e5%88%86%e9%a1%9e\/geospatial-querying-using-geohashes-and-griddb\/","title":{"rendered":"GeoHash\u3068GridDB\u3092\u4f7f\u3063\u305f\u5730\u7406\u7a7a\u9593\u30af\u30a8\u30ea"},"content":{"rendered":"<h2>\u306f\u3058\u3081\u306b<\/h2>\n<p>\u6700\u8fd1\u306e<a href=\"https:\/\/griddb.net\/en\/blog\/using-geographical-queries-based-on-bounding-boxes\/\">\u30d6\u30ed\u30b0<\/a>\u3067\u3001\u624b\u52d5\u306e\u30d0\u30a6\u30f3\u30c7\u30a3\u30f3\u30b0\u30dc\u30c3\u30af\u30b9\u3092\u4f7f\u3063\u305f\u5730\u7406\u7a7a\u9593\u30c7\u30fc\u30bf\u306e\u30af\u30a8\u30ea\u306b\u3064\u3044\u3066\u7d39\u4ecb\u3057\u307e\u3057\u305f\u3002\u4eca\u56de\u306e\u30d6\u30ed\u30b0\u3067\u306f\u3001\u540c\u3058\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u30fb\u30af\u30a8\u30ea\u3068\u3001\u30d0\u30a6\u30f3\u30c7\u30a3\u30f3\u30b0\u30dc\u30c3\u30af\u30b9\u306e\u4ee3\u308f\u308a\u306b<a href=\"https:\/\/en.wikipedia.org\/wiki\/Geohash\">GeoHashes<\/a>\u3092\u4f7f\u7528\u3057\u3066\u30af\u30a8\u30ea\u3092\u5b9f\u884c\u3057\u307e\u3059\u3002<\/p>\n<p>GeoHash\u3068\u306f\u3001\u5730\u7403\u4e0a\u306e\u5730\u57df\u3092\u8868\u3059\u82f1\u6570\u5b57\u306e\u30a8\u30f3\u30b3\u30fc\u30c9\u3067\u3059\u3002\u7b26\u53f7\u306e\u30d3\u30c3\u30c8\u6570\u304c\u591a\u3044\u307b\u3069\u3001\u3088\u308a\u6b63\u78ba\u306a\u30a8\u30ea\u30a2\u3092\u898f\u5b9a\u3057\u3066\u3044\u307e\u3059\u30021\u6841\u306e\u9577\u3055\u306eGeoHash\u306f\u7d042500km\u3092\u30ab\u30d0\u30fc\u3057\u30018\u6841\u306e\u9577\u3055\u306eGeoHash\u306f\u7d0420m\u3092\u30ab\u30d0\u30fc\u3057\u307e\u3059\u3002\u4f8b\u3048\u3070\u30019q \u306eGeoHash\u306f\u30ab\u30ea\u30d5\u30a9\u30eb\u30cb\u30a2\u5dde\u3068\u30a2\u30e1\u30ea\u30ab\u897f\u90e8\u306e\u5927\u90e8\u5206\u3092\u30ab\u30d0\u30fc\u3057\u3066\u3044\u307e\u3059\u304c\u3001\u30ab\u30ea\u30d5\u30a9\u30eb\u30cb\u30a2\u5dde\u5185\u306e\u30b5\u30f3\u30d5\u30e9\u30f3\u30b7\u30b9\u30b3 \u30fb\u30b5\u30f3\u30ce\u30bc\u306e\u30d9\u30a4\u30a8\u30ea\u30a2\u306f 9qb, 9qc, 9q8, 9q9 \u3068\u8907\u6570\u306eGeoHash\u306b\u307e\u305f\u304c\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<p><a href=\"https:\/\/griddb.net\/wp-content\/uploads\/2021\/05\/geohashes.png\"><img fetchpriority=\"high\" decoding=\"async\" src=\"https:\/\/griddb.net\/wp-content\/uploads\/2021\/05\/geohashes.png\" alt=\"\" width=\"485\" height=\"233\" class=\"aligncenter size-full wp-image-27471\" srcset=\"\/wp-content\/uploads\/2021\/05\/geohashes.png 485w, \/wp-content\/uploads\/2021\/05\/geohashes-300x144.png 300w\" sizes=\"(max-width: 485px) 100vw, 485px\" \/><\/a><\/p>\n<p>GeoHash\u306f\u3001<a href=\"https:\/\/bhargavchippada.github.io\/mapviz\/\">\u3053\u306e<\/a>\u3088\u3046\u306a\u69d8\u3005\u306a\u30c4\u30fc\u30eb\u3092\u4f7f\u3063\u3066\u7c21\u5358\u306b\u8996\u899a\u5316\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<h2>Java spatial4j GeoHashUtils<\/h2>\n<p>Geospatial\u30a2\u30d7\u30ea\u306e\u30a4\u30f3\u30b8\u30a7\u30b9\u30c8\u90e8\u5206\u3067\u306f\u3001Java\u3092\u4f7f\u7528\u3057\u3066New York Open Data\u306eCrime Complaint CSV\u30d5\u30a1\u30a4\u30eb\u3092\u8aad\u307f\u8fbc\u307f\u3001GridDB\u306b\u30ed\u30fc\u30c9\u3057\u3066\u3044\u307e\u3059\u3002Java\u7528\u306eGeoHash\u5b9f\u88c5\u306f\u3044\u304f\u3064\u304b\u3042\u308a\u307e\u3059\u304c\u3001\u4eca\u56de\u306f\u6700\u5927\u306e\u958b\u767a\u8005\u30b3\u30df\u30e5\u30cb\u30c6\u30a3\u3067\u6700\u3082\u666e\u53ca\u3057\u3066\u3044\u308b\u3068\u601d\u308f\u308c\u308bspatial4j\u306e<a href=\"https:\/\/locationtech.github.io\/spatial4j\/apidocs\/com\/spatial4j\/core\/io\/GeohashUtils.html\">GeoHashUtils<\/a>\u3092\u4f7f\u3063\u3066\u30c7\u30e2\u30f3\u30b9\u30c8\u30ec\u30fc\u30b7\u30e7\u30f3\u3092\u3057\u307e\u3059\u3002\u4ee5\u524d\u306eIngest\u30c4\u30fc\u30eb\u304b\u3089\u306e\u5909\u66f4\u70b9\u306f\u5358\u7d14\u3067\u3001\u7def\u5ea6\u3068\u7d4c\u5ea6\u3092\u30b3\u30f3\u30c6\u30ca\u540d\u306b\u64cd\u4f5c\u3059\u308b\u4ee3\u308f\u308a\u306b\u30016\u6841\u306eGeohash\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n<div class=\"clipboard\">\n<pre><code class=\"language-py\">String cName = \"geo_\"+GeohashUtils.encodeLatLon(c.Latitude, c.Longitude, 6);<\/code><\/pre>\n<\/div>\n<p>\u307e\u305f\u3001colum schema\u306bGEOHASH\u30ab\u30e9\u30e0\u304c\u8ffd\u52a0\u3055\u308c\u300112\u6841\u306e\u5b8c\u5168\u306aGeoHash\u304c\u683c\u7d0d\u3055\u308c\u307e\u3059\u3002<\/p>\n<div class=\"clipboard\">\n<pre><code class=\"language-py\">c.GEOHASH=GeohashUtils.encodeLatLon(c.Latitude, c.Longitude);<\/code><\/pre>\n<\/div>\n<h2>Python\u3068\u8fd1\u63a5Hash\u3092\u4f7f\u3063\u305f\u30af\u30a8\u30ea<\/h2>\n<p>\u958b\u767a\u8005\u304c\u3088\u308a\u6a5f\u80fd\u7684\u306a\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u5b9f\u88c5\u3067\u304d\u308b\u3088\u3046\u306b\u3001GeoHash\u3092\u5b9f\u88c5\u30fb\u5229\u7528\u3059\u308b\u30e9\u30a4\u30d6\u30e9\u30ea\u306f\u6570\u591a\u304f\u3042\u308a\u307e\u3059\u3002\u305d\u306e\u4e00\u3064\u304c <code>Proximityhash<\/code> \u3067\u3001\u3053\u308c\u306f\u6307\u5b9a\u3055\u308c\u305f\u70b9\u3092\u4e2d\u5fc3\u3068\u3057\u305f\u5186\u3092\u3001\u6307\u5b9a\u3055\u308c\u305f\u534a\u5f84\u3067\u8986\u3046\u3088\u3046\u306aGeoHash\u306e\u30ea\u30b9\u30c8\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002Proximityhash \u306b\u306f\u3001\u4f55\u6841\u306eGeoHash\u3092\u4f5c\u6210\u3059\u308b\u304b\u3092\u793a\u3059\u7cbe\u5ea6\u306e\u5f15\u6570\u3068\u3001\u691c\u7d22\u70b9\u306e\u534a\u5f84\u5185\u306b\u5b8c\u5168\u306b\u53ce\u307e\u3063\u3066\u3044\u308b\u5834\u5408\u306b\u3001\u3088\u308a\u5c11\u306a\u3044\u3001\u3088\u308a\u7cbe\u5ea6\u306e\u4f4e\u3044GeoHash\u3092\u8fd4\u3059\u5727\u7e2e\u306e\u5f15\u6570\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p><a href=\"https:\/\/griddb.net\/wp-content\/uploads\/2021\/05\/timessquare.png\"><img decoding=\"async\" src=\"https:\/\/griddb.net\/wp-content\/uploads\/2021\/05\/timessquare.png\" alt=\"\" width=\"553\" height=\"237\" class=\"aligncenter size-full wp-image-27472\" srcset=\"\/wp-content\/uploads\/2021\/05\/timessquare.png 553w, \/wp-content\/uploads\/2021\/05\/timessquare-300x129.png 300w\" sizes=\"(max-width: 553px) 100vw, 553px\" \/><\/a><\/p>\n<p>Proximityhash\u3092\u4f7f\u3063\u3066\u3001\u5148\u307b\u3069\u8aad\u307f\u8fbc\u3093\u3060\u30c7\u30fc\u30bf\u3092\u7167\u4f1a\u3057\u307e\u3059\u3002\u307e\u305a\u3001\u3069\u306e\u30b3\u30f3\u30c6\u30ca\u306b\u7167\u4f1a\u3059\u308b\u304b\u3092\u628a\u63e1\u3059\u308b\u305f\u3081\u306b6\u6841\u306eGeoHash\u306e\u30ea\u30b9\u30c8\u3092\u53d6\u5f97\u3057\u3001\u6b21\u306b\u5404\u30b3\u30f3\u30c6\u30ca\u306b\u7167\u4f1a\u3059\u308bGeoHash\u306e\u30ea\u30b9\u30c8\u3092\u53d6\u5f97\u3057\u307e\u3059\u3002<\/p>\n<div class=\"clipboard\">\n<pre><code class=\"language-py\">radius_hashes = proximityhash.create_geohash(lat, lon, distance, 8, georaptor_flag=True).split(',')\ncontainer_hashes = proximityhash.create_geohash(lat, lon, distance, 6, georaptor_flag=False).split(',')<\/code><\/pre>\n<\/div>\n<p>\u6b21\u306b\u3001\u3059\u3079\u3066\u306e\u30b3\u30f3\u30c6\u30ca\u3092\u53cd\u5fa9\u51e6\u7406\u3057\u3066\u3001\u6b21\u306e\u3088\u3046\u306aTQL\u6587\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002 <code>SELECT * where geohash LIKE 'XXXXXXX%' or geohash LIKE 'YYYYYYY%' ...<\/code>.<\/p>\n<p>\u30af\u30a8\u30ea\u306e\u6700\u9069\u5316\u3082\u884c\u308f\u308c\u3066\u304a\u308a\u3001\u30af\u30a8\u30ea\u5bfe\u8c61\u306e\u30b3\u30f3\u30c6\u30ca\u5185\u306b\u3042\u308bGeoHash\u306e\u307f\u304cTQL\u6587\u306b\u8ffd\u52a0\u3055\u308c\u307e\u3059\u3002<\/p>\n<div class=\"clipboard\">\n<pre><code class=\"language-py\">retval=[]\nfor container in container_hashes:\n\n    ts = gridstore.get_container(\"geo_\"+container)\n    tql = \"SELECT * WHERE \"\n    orstmt=\"\"\n    for geohash in radius_hashes:\n        if geohash.startswith(container):\n            tql = tql + orstmt + \"geohash LIKE '\"+geohash+\"%'\"\n            orstmt=\" OR \"\n\n    if orstmt != \"\":\n        try:\n            query = ts.query(tql) \n            rs = query.fetch(False) \n\n            while rs.has_next():\n                data = rs.next()\n                retval.append(data)\n        except:\n            pass<\/code><\/pre>\n<\/div>\n<h2>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9<\/h2>\n<p>\u7cbe\u5ea6\u306e\u7570\u306a\u308bGeoHash\u3092\u4f7f\u3063\u305f\u30af\u30a8\u30ea\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u3001\u4ee5\u524d\u306e\u30d6\u30ed\u30b0\u3067\u7d39\u4ecb\u3057\u305f\u5730\u7406\u7a7a\u9593\u30af\u30a8\u30ea\u306e\u624b\u52d5\u30d0\u30a6\u30f3\u30c7\u30a3\u30f3\u30b0\u30dc\u30c3\u30af\u30b9\u3092\u4f7f\u3063\u305f\u65b9\u6cd5\u3068\u6bd4\u8f03\u3057\u307e\u3057\u305f\u3002<\/p>\n<table>\n<thead>\n<tr>\n<th>\u6982\u8981<\/th>\n<th>GeoHash\u6570<\/th>\n<th>\u6642\u9593\uff08\u79d2\uff09<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u624b\u52d5\u30d0\u30a6\u30f3\u30c7\u30a3\u30f3\u30b0\u30dc\u30c3\u30af\u30b9<\/td>\n<td><\/td>\n<td>0&#46;005<\/td>\n<\/tr>\n<tr>\n<td>7\u6841 GeoHash<\/td>\n<td>59<\/td>\n<td>0&#46;007<\/td>\n<\/tr>\n<tr>\n<td>8\u6841 GeoHash<\/td>\n<td>1522<\/td>\n<td>0&#46;15<\/td>\n<\/tr>\n<tr>\n<td>8\u6841 \u5727\u7e2eGeoHash<\/td>\n<td>468<\/td>\n<td>0&#46;030<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u540c\u3058\u30ec\u30d9\u30eb\u306e\u7cbe\u5ea6\u3067\u3042\u308c\u3070\u3001GeoHash\u306e\u65b9\u304c\u308f\u305a\u304b\u306b\u9045\u3044\u3060\u3051\u3067\u3042\u308b\u3053\u3068\u304c\u5206\u304b\u308a\u307e\u3059\u3002<\/p>\n<h2>\u307e\u3068\u3081<\/h2>\n<p>GeoHash\u306f\u3001\u30c7\u30fc\u30bf\u3092\u624b\u52d5\u3067\u64cd\u4f5c\u3059\u308b\u5fc5\u8981\u304c\u306a\u304f\u3001\u4ed6\u306e\u65b9\u6cd5\u306b\u6bd4\u3079\u3066\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u4f4e\u4e0b\u304c\u5c11\u306a\u3044\u3001\u5730\u7406\u7a7a\u9593\u30c7\u30fc\u30bf\u306e\u554f\u3044\u5408\u308f\u305b\u306b\u4f7f\u7528\u3067\u304d\u308b\u7c21\u5358\u306a\u5b9f\u88c5\u65b9\u6cd5\u3067\u3059\u3002\u3053\u306e\u30d6\u30ed\u30b0\u306b\u95a2\u3059\u308b\u8a73\u7d30\u306a\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9\u306f\u3001<a href=\"https:\/\/github.com\/griddbnet\">GridDB.net&#8217;s GitHub<\/a>\u306b\u3042\u308a\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u306f\u3058\u3081\u306b \u6700\u8fd1\u306e\u30d6\u30ed\u30b0\u3067\u3001\u624b\u52d5\u306e\u30d0\u30a6\u30f3\u30c7\u30a3\u30f3\u30b0\u30dc\u30c3\u30af\u30b9\u3092\u4f7f\u3063\u305f\u5730\u7406\u7a7a\u9593\u30c7\u30fc\u30bf\u306e\u30af\u30a8\u30ea\u306b\u3064\u3044\u3066\u7d39\u4ecb\u3057\u307e\u3057\u305f\u3002\u4eca\u56de\u306e\u30d6\u30ed\u30b0\u3067\u306f\u3001\u540c\u3058\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u30fb\u30af\u30a8\u30ea\u3068\u3001\u30d0\u30a6\u30f3\u30c7\u30a3\u30f3\u30b0\u30dc\u30c3\u30af\u30b9\u306e\u4ee3\u308f\u308a\u306bGeoHashes\u3092\u4f7f\u7528\u3057\u3066\u30af\u30a8\u30ea\u3092 [&hellip;]<\/p>\n","protected":false},"author":71,"featured_media":49238,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1005],"tags":[],"class_list":["post-50736","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-1005"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.1.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>GeoHash\u3068GridDB\u3092\u4f7f\u3063\u305f\u5730\u7406\u7a7a\u9593\u30af\u30a8\u30ea | GridDB: Open Source Time Series Database for IoT<\/title>\n<meta name=\"description\" content=\"\u306f\u3058\u3081\u306b\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/griddb.net\/ja\/\u672a\u5206\u985e\/geospatial-querying-using-geohashes-and-griddb\/\" \/>\n<meta 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