需要列出世界上所有国家的经纬度坐标 [英] Need a list of all countries in the world, with a longitude and latitude coordinate
问题描述
我需要一份世界上所有国家的名单,一国经纬度坐标。
我有一个看一下GeoNames,但我可以看到的所有列表都包含列表中的国家和城市。我想我可以解析它并过滤出国家,但我希望避免这种情况。
基本上,我需要的是什么;
国家名称 - 经纬度坐标(国家的某个中心)
不需要说大陆的任何内容,但是我不介意这样做。
_L
您可能有兴趣建立这些数据的两种网络服务: http://www.geonames.org/export/geonames-search.html
您可以调用 http://ws.geonames.org/countryInfo 获取国家代码和国家名称的完整列表,a然后调用 http://ws.geonames.org/search?country=<code>&name=<name>&maxRows=1
得到似乎是该国中心点的经纬度。 (例如 http://ws.geonames.org/搜索?country = US& name = United%20States& maxRows = 1 )
编辑
这是一个C#脚本,您可以针对上面列出的服务运行。
您可以按照 LinqPad 。
void Main()
{
var countries = new List< Country>();
XDocument xmlDoc = XDocument.Load(@http://ws.geonames.org/countryInfo);
var countryList =(从xmlDoc.Descendants(country)中的c选择c);
foreach(countryList中的var国家)
{
var countryPath = string.Format(http://ws.geonames.org/search?country={0}& ; name = {1}& maxRows = 1,country.Element(countryCode)。value,country.Element(countryName)。Value);
var element =(从XDocument.Load(countryPath).decendants(geoname)中的e选择e).FirstOrDefault();
countries.Add(新国家
{
Code = element.Element(countryCode)。Value,
Name = element.Element(countryName) .value,
Latitude = Convert.ToDecimal(element.Element(lat)。Value),
Longitude = Convert.ToDecimal(element.Element(lng)。Value),
Continent = country.Element(continentName)。Value
});
Console.WriteLine({0},{1},{2},{3},{4},Continent,Code,Name ,纬度,经度);
foreach(国家/地区的国家/地区)
{
Console.WriteLine({0},{1},{2},{3},{4}, country.Continent,country.Code,country.Name,country.Latitude,country.Longitude);
public class Country
{
public string Continent {get; set;}
public string Name {get; set ;}
public string Code {get; set;}
public decimal Latitude {get; set;}
public decimal Longitude {get; set;}
}
I need a list of all the countries in the world, with one lat/long coordinate for the country.
I had a look at GeoNames, but all I can seem to find are lists that have the countries as well as cities in the same list. I guess I can just parse it and filter out the countries, but I was hoping to avoid that.
Basically, what I need;
Country name - Lat/long coordinate (some sort of center of the country)
It doesn't need to say anything about continent, but I wouldn't mind if it did.
_L
Two web services that may be of interest to you to build this data:
- http://www.geonames.org/export/geonames-search.html
- http://www.geonames.org/export/web-services.html#countryInfo
You could call http://ws.geonames.org/countryInfo to get the full list of country codes and country names, and then call http://ws.geonames.org/search?country=<code>&name=<name>&maxRows=1
on each to get what appears to be the lat/long of the center-point of the country. (ex. http://ws.geonames.org/search?country=US&name=United%20States&maxRows=1 )
EDIT
Here is a C# script that you can run against the services listed above.
You can run this as is in LinqPad.
void Main()
{
var countries = new List<Country>();
XDocument xmlDoc = XDocument.Load(@"http://ws.geonames.org/countryInfo");
var countryList = (from c in xmlDoc.Descendants("country") select c);
foreach (var country in countryList)
{
var countryPath = string.Format("http://ws.geonames.org/search?country={0}&name={1}&maxRows=1", country.Element("countryCode").Value, country.Element("countryName").Value);
var element = (from e in XDocument.Load(countryPath).Descendants("geoname") select e).FirstOrDefault();
countries.Add(new Country
{
Code = element.Element("countryCode").Value,
Name = element.Element("countryName").Value,
Latitude = Convert.ToDecimal(element.Element("lat").Value),
Longitude = Convert.ToDecimal(element.Element("lng").Value),
Continent = country.Element("continentName").Value
});
}
Console.WriteLine("{0},{1},{2},{3},{4}","Continent", "Code", "Name", "Latitude", "Longitude");
foreach (var country in countries)
{
Console.WriteLine("{0},{1},{2},{3},{4}",country.Continent, country.Code, country.Name, country.Latitude, country.Longitude);
}
}
public class Country
{
public string Continent {get;set;}
public string Name { get;set;}
public string Code { get;set;}
public decimal Latitude { get;set;}
public decimal Longitude { get;set;}
}
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