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geohashdi-li-wei-zhi-de-wei-yi-bian-ma-suan-fa.html
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<!DOCTYPE html>
<html lang="zh">
<head>
<meta charset="utf-8" />
<title>Geohash地理位置的唯一编码算法</title>
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<body id="index" class="home">
<header id="banner" class="body">
<h1><a href="https://sillyemperor.github.io/">841BC </a></h1>
<nav><ul>
<li class="active"><a href="https://sillyemperor.github.io/category/gis.html">GIS</a></li>
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<h1 class="entry-title">
<a href="https://sillyemperor.github.io/geohashdi-li-wei-zhi-de-wei-yi-bian-ma-suan-fa.html" rel="bookmark"
title="Permalink to Geohash地理位置的唯一编码算法">Geohash地理位置的唯一编码算法</a></h1>
</header>
<div class="entry-content">
<footer class="post-info">
<abbr class="published" title="2019-06-04T00:00:00+02:00">
Published: Tue 04 June 2019
</abbr>
<address class="vcard author">
By <a class="url fn" href="https://sillyemperor.github.io/author/wang-jiang.html">Wang Jiang</a>
</address>
<p>In <a href="https://sillyemperor.github.io/category/gis.html">GIS</a>.</p>
<p>tags: <a href="https://sillyemperor.github.io/tag/gis.html">GIS</a> <a href="https://sillyemperor.github.io/tag/geohash.html">Geohash</a> </p>
</footer><!-- /.post-info --> <p><a href="https://en.wikipedia.org/wiki/Geohash">Geohash</a>是一种能够让经纬度和唯一字符串相互转换的算法。例如：可以用 ‘ ezs42’代表‘-5.60302734375, 42.60498046875’。该技术具备这样一种特性，字符串的长途和小数点后的位数成正比，也就是说，字符串越长精度越高。</p>
<p>这个技术运行我们对一个位置进行带精度的比较，比如说：我们可以将一个点作为缓存的键值。</p>
</div><!-- /.entry-content -->
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<h2>links</h2>
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<li><a href="http://python.org/">Python.org</a></li>
<li><a href="http://jinja.pocoo.org/">Jinja2</a></li>
<li><a href="#">You can modify those links in your config file</a></li>
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