Question

我对意大利罗马地理编码的要求归还了这个：

{"spatialReference":{"wkid":4326,"latestWkid":4326},"locations":[
    {"name":"Roma, Latium, Italy", "extent":{"xmin":12.389896,"ymin":41.800739,"xmax":12.577896,"ymax":41.988739},"feature":{"geometry":{"x":12.483895995000069,"y":41.894738560000064}, "attributes":{"Type":"National Capital","Match_addr":"Roma, Latium, Italy","Addr_type":"POI"}}},
    {"name":"Roma, Latium, Italy", "extent":{"xmin":12.389896,"ymin":41.800739,"xmax":12.577896,"ymax":41.988739},"feature":{"geometry":{"x":12.483895995000069,"y":41.894738560000064}, "attributes":{"Type":"National Capital","Match_addr":"Roma, Latium, Italy","Addr_type":"POI"}}},
    {"name":"Roma, Latium, Italy", "extent":{"xmin":12.389896,"ymin":41.800739,"xmax":12.577896,"ymax":41.988739},"feature":{"geometry":{"x":12.483895995000069,"y":41.894738560000064}, "attributes":{"Type":"National Capital","Match_addr":"Roma, Latium, Italy","Addr_type":"POI"}}},
    {"name":"Roma, Latium, Italy", "extent":{"xmin":12.389896,"ymin":41.800739,"xmax":12.577896,"ymax":41.988739},"feature":{"geometry":{"x":12.483895995000069,"y":41.894738560000064}, "attributes":{"Type":"National Capital","Match_addr":"Roma, Latium, Italy","Addr_type":"POI"}}}
]}

这是request URL。

条目似乎都是重复的。有这个原因吗？

Answer 1

是。原因是同一个地方的替代名称。

如果您将请求修改为return all fields，您会发现以下字段在四个结果中有所不同：

得分
等级
市

关键区别是城市价值。它为罗马（罗马，罗马，罗姆和罗马）提供了四种不同的拼写方式。原因是在搜索任何拼写时可以找到这个地方。

在搜索全球城市时，例如罗马或纽约（又名Nova York，Nova Iorque等），您最有可能看到多个结果，因为他们往往有多种语言的名字

正如其中一条评论所示，您可以通过将maxLocations设置为1来解决此问题。结果按排名排序，因此您可能会在列表顶部获得最佳结果

为什么搜索罗马，意大利返回4个重复的结果？

1 个答案: