如何使用Wikipedia API在坐标中包含距离?

时间:2016-03-09 18:14:31

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

在我的维基百科API中,我获得了一个地方的坐标。这个坐标包含lat,lon,dim,type等。但是我也想在坐标中添加dist,以便我可以从一个API获得每个位置的距离。我目前的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

此API的输出为:

"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...
    ]
}

在搜索位置的查询时,我找到了以下API:

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

此API的输出为:

"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”?

1 个答案:

答案 0 :(得分:2)

是的,您可以使用 codistancefrompoint 参数在您的API中添加delta,该参数是您的主API请求中已使用的coordinates的一部分,因此您不要# 39;需要使用其他API。此参数的值必须是您的入口点,因此它必须与dist相同:

ggscoord

在这种情况下,对于每个结果,距离将从此入口点到结果点进行测量。

以下是您的新API查询:

codistancefrompoint=52.5243700|13.4105300

结果如下:

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