【问题标题】:How to include distance in co-ordinates using Wikipedia API?如何使用 Wikipedia API 在坐标中包含距离?
【发布时间】:2016-03-09 18:14:31
【问题描述】:

在我的 Wikipedia API 中,我得到了一个地方的坐标。该坐标包含 lat、lon、dim、type 等。但我还想在坐标内添加 dist,以便我可以从一个 API 获取每个地方的距离。我当前的 API 是 -

https://en.wikipedia.org/w/api.php?format=json&action=query&redirects=1&generator=geosearch&prop=extracts|coordinates|pageimages&ggslimit=20&ggsradius=1000&ggscoord=52.5243700|13.4105300&&formatversion=2&exintro=1&explaintext=1&exlimit=20&coprop=type|dim|globe&colimit=20&piprop=thumbnail&pithumbsize=400&pilimit=20

这个 API 的输出是:

"query": {
    "pages": [
        {
            "pageid": 2511,
            "ns": 0,
            "title": "Alexanderplatz",
            "extract": "Alexanderplatz (pronounced [ʔalɛkˈsandɐˌplats]) is a large public square and transport hub in the central Mitte district of Berlin, near the Fernsehturm. Berliners often call it simply Alex, referring to a larger neighbourhood stretching from Mollstraße in the northeast to Spandauer Straße and the Rotes Rathaus in the southwest.",
            "coordinates": [
                {
                    "lat": 52.52166748,
                    "lon": 13.41333294,
                    "primary": "",
                    "type": "landmark",
                    "dim": "1000",
                    "globe": "earth"
                }
            ],
            "thumbnail": {
                "source": "https://upload.wikimedia.org/wikipedia/commons/thumb/d/da/Alexanderplatz_by_the_night_-_ProtoplasmaKid.webm/400px--Alexanderplatz_by_the_night_-_ProtoplasmaKid.webm.jpg",
                "width": 400,
                "height": 225
            }
        },
     ...and some many JSON object similar like this...
    ]
}

在搜索查询 dist of location 时,我发现了以下 API:

https://en.wikipedia.org/w/api.php?action=query&list=geosearch&gscoord=37.786952%7C-122.399523&gsradius=10000&gslimit=10

这个 API 的输出是:

"query": {
    "geosearch": [
        {
            "pageid": 18618509,
            "ns": 0,
            "title": "Wikimedia Foundation",
            "lat": 37.78697,
            "lon": -122.399677,
            "dist": 13.7,
            "primary": ""
        },
        ... so on
    ]
}

现在我想知道有没有办法在我以前的 API 中包含“dist”?

【问题讨论】:

    标签: c# json api wikipedia-api mediawiki-api


    【解决方案1】:

    是的,您可以使用 codistancefrompoint 参数在您的 API 中包含 dist,该参数是您的主要 API 请求中已使用的 coordinates 的一部分,因此您不需要使用另一个 API。此参数的值必须是您的入口点,因此它必须与ggscoord 相同:

    codistancefrompoint=52.5243700|13.4105300
    

    在这种情况下,对于每个结果,将测量从该入口点到结果点的距离。

    这是您的新 API 查询:

    https://en.wikipedia.org/w/api.php?format=json&action=query&redirects=1&generator=geosearch&prop=extracts|coordinates|pageimages&ggslimit=20&ggsradius=1000&ggscoord=52.5243700|13.4105300&formatversion=2&exintro=1&explaintext=1&exlimit=20&coprop=type|dim|globe&colimit=20&piprop=thumbnail&pithumbsize=400&pilimit=20&codistancefrompoint=52.5243700|13.4105300
    

    结果如下:

    "query":{
        "pages":[
            {
                "pageid":2511,
                "ns":0,
                "title":"Alexanderplatz",
                "extract":"Alexanderplatz (pronounced [ʔalɛkˈsandɐˌplats]) is a large public square and transport hub in the central Mitte district of Berlin, near the Fernsehturm. Berliners often call it simply Alex, referring to a larger neighbourhood stretching from Mollstraße in the northeast to Spandauer Straße and the Rotes Rathaus in the southwest.",
                "coordinates":[
                    {
                        "lat":52.52166748,
                        "lon":13.41333294,
                        "primary":"",
                        "type":"landmark",
                        "dim":"1000",
                        "globe":"earth",
                        "dist":355.3
                    }
                ],
                "thumbnail":{
                    "source":"https://upload.wikimedia.org/wikipedia/commons/thumb/d/da/Alexanderplatz_by_the_night_-_ProtoplasmaKid.webm/400px--Alexanderplatz_by_the_night_-_ProtoplasmaKid.webm.jpg",
                    "width":400,
                    "height":225
                }
            },
            ...
        ]
    }
    

    【讨论】:

    • 非常感谢您的回答。
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