To check for valid locations, log into the MySQL server and query the articles table yourself to see if the lat and lon fields are filled in appropriately.
要检查位置是否有效,请登录到MySQL服务器中,查询文章表来看看纬度和经度字段填写得是否合适。
If a single field is desired, lat/lon can be encoded into a single String using the Geohash encoding (see Resources).
如果希望使用一个字段,那么可以使用 Geohash 编码方式将纬度/经度编码到一个 String 中(参见 参考资料)。
Numeric spatial information such as latitude and longitude (lat/lon for short) is where the more interesting representations come into play in terms of search with Lucene and Solr.
使用 Lucene 和 Solr 进行搜索时,纬度和经度(缩写为 lat/lon)等数字空间信息的表示方式是最有趣的。
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