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geohashに関するyassのブックマーク (7)
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yass 2017/02/04
- nosql
- redis
- btree
- geohash
リンク -
一次元ハッシュコードによる空間半径検索 - Qiita
<?php /** * QuadKeyクラス * * GPS世界座標系の座標をQuadKeyに変換します。 * * * 2012/10/04 1.0 初期版 * 2012/12/13 1.1 地球の端での境界条件を追加 * 2012/12/19 1.2 変換ロジックを簡単化 * * @package * @access public * @author OHTSUKA Ko-hei * @create 2012/10/04 * @version 1.2 **/ class QuadKey { const M_ON_EQ = 40075016.68557849; //地球を半径6378.137kmの球として赤道での周(m) const DEG_TO_RAD = 0.017453292519943295; //度をラジアンにするための定数 const EarthRadius = 6378137
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davidmoten/geo · GitHub - Geohash utitlies in java
Java utility methods for geohashing. Features simple api encodes geohashes from latitude, longitude to arbitrary length (GeoHash.encodeHash) decodes latitude, longitude from geohashes (GeoHash.decodeHash) finds adjacent hash in any direction (GeoHash.adjacentHash), works on borders including the poles too finds all 8 adjacent hashes to a hash (GeoHash.neighbours) calculates hash length to enclose
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AWS News Blog
Amazon SageMaker Geospatial Capabilities Now Generally Available with Security Updates and More Use Case Samples At AWS re:Invent 2022, we previewed Amazon SageMaker geospatial capabilities, allowing data scientists and machine learning (ML) engineers to build, train, and deploy ML models using geospatial data. Geospatial ML with Amazon SageMaker supports access to readily available geospatial dat
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bigdatamodeling.org - bigdatamodeling リソースおよび情報
This webpage was generated by the domain owner using Sedo Domain Parking. Disclaimer: Sedo maintains no relationship with third party advertisers. Reference to any specific service or trade mark is not controlled by Sedo nor does it constitute or imply its association, endorsement or recommendation.
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GeoHashのdecodeのアルゴリズムの解説します & ScalaのGeoHashライブラリを作ってみました(仮) - ( ꒪⌓꒪) ゆるよろ日記
GeoHash(http://en.wikipedia.org/wiki/Geohash)は、緯度経度を文字列のハッシュで表現する仕様です。 GeoHashにより表現された緯度経度の情報は、一つの文字列で緯度と経度という2次元の情報に加えて精度も表すことができるという特徴を持っています。 例えば、どうでしょうバカの聖地である北海道札幌市の平岸高台公園は、北緯43.025東経141.377ですが、これをGeoHashで表現すると、"xpssc0"となります。 この"xpssc0"というGeoHash表現は、「北緯43.0224609375から43.0279541015625の間で、東経141.3720703125から141.383056640625の矩形範囲」であり、座標はこの矩形範囲の中心点になります。 @masuidrive blogさんの緯度経度を文字列で表すGeoHash - @ma
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