雅虎天气API在某些美国纬度/经度位置给出错误

Question

我正在创建关于公园的页面。对于每一个公园，有一个纬度/经度和大多数公园，我可以使用雅虎天气API

但由于某些原因，有些页面返回这样的错误：

无效的输入/ forecastrss W' = 2347563

一个电话，我作出这样的雅虎天气API后：

http://www.geomojo.org/cgi-bin/reversegeocoder.cgi?long=-121.433098&lat=40.509312

任何想法，我怎么能解决这些类型的错误？

这里是我的代码：

$url = 'http://www.geomojo.org/cgi-bin/reversegeocoder.cgi?long='.$lng.'&lat='.$lat; 


// Calls the url to get the zip code and woeid 
$webpage = file_get_contents($url); 
//echo $webpage; 
try 
{ 
    $xml = new SimpleXMLElement($url, 0, true); 

    // Gets the woeid to look up the weather in that specific place dynamically. 
    $woeid= $xml->woeid; // Displays "Text" 
    $zip = $xml->name; // Displays "Text" 

    // URL to send to yahoo weather to get weather RSS 
     $yahoo_url = 'http://weather.yahooapis.com/forecastrss?w='.$woeid; 

    $xml = file_get_contents($yahoo_url); 
    $yahoo_response = new SimpleXMLElement($xml , 0, false); 

    $weather_description = $yahoo_response->channel->item->description; 

    $splitdata = explode('<a', $weather_description); 
    echo '<p>'.$splitdata[0].'</p>'; 
} 
catch (Exception $e) 
{ 
    echo 'Caught exception: ', $e->getMessage(), "\n"; 
} 

下面是一个例子，这并不工作的URL。看到左侧的天气部分：

http://www.comehike.com/outdoors/parks/park.php?park_id=86

Answer 1

这种地址解析呼叫

http://www.geomojo.org/cgi-bin/reversegeocoder.cgi?long=-121.433098&lat=40.509312

只返回一个状态，加利福尼亚州。

如果我不得不做出疯狂的猜测，我会说天气API需要比这更具体的位置。这可能是因为有些公园距离太远（或最近的城镇太小），地理编码器无法找到您所经过的坐标的城市。

Answer 2

如果你通过雅虎进行经纬度和天气预报，你可能会得到更好的结果。您可以使用YQL为您打两个电话。

例如，使用上面的纬度/经度对，这里的纬度/长着一双首先转换成WOEID一个YQL查询，然后使用该得到的预测：

select * from weather.woeid where w in (select woeid from geo.placefinder where text="-121.433098, 40.509312" and gflags="R")

当尝试在YQL控制台中，这里是结果：

<query xmlns:yahoo="http://www.yahooapis.com/v1/base.rng" 
    yahoo:count="1" yahoo:created="2011-12-30T20:43:08Z" yahoo:lang="en-US"> 
    <results> 
     <rss version="2.0" 
      xmlns:geo="http://www.w3.org/2003/01/geo/wgs84_pos#" xmlns:yweather="http://xml.weather.yahoo.com/ns/rss/1.0"> 
      <channel> 
       <title>Yahoo! Weather - Old Station, CA</title> 
       <link>http://us.rd.yahoo.com/dailynews/rss/weather/Old_Station__CA/*http://weather.yahoo.com/forecast/USCA0801_f.html</link> 
       <description>Yahoo! Weather for Old Station, CA</description> 
       <language>en-us</language> 
       <lastBuildDate>Fri, 30 Dec 2011 11:53 am PST</lastBuildDate> 
       <ttl>60</ttl> 
       <yweather:location city="Old Station" 
        country="United States" region="CA"/> 
       <yweather:units distance="mi" pressure="in" speed="mph" temperature="F"/> 
       <yweather:wind chill="51" direction="200" speed="7"/> 
       <yweather:atmosphere humidity="89" pressure="30.08" 
        rising="2" visibility="4"/> 
       <yweather:astronomy sunrise="7:33 am" sunset="4:52 pm"/> 
       <image> 
        <title>Yahoo! Weather</title> 
        <width>142</width> 
        <height>18</height> 
        <link>http://weather.yahoo.com</link> 
        <url>http://l.yimg.com/a/i/brand/purplelogo//uh/us/news-wea.gif</url> 
       </image> 
       <item> 
        <title>Conditions for Old Station, CA at 11:53 am PST</title> 
        <geo:lat>40.59</geo:lat> 
        <geo:long>-121.49</geo:long> 
        <link>http://us.rd.yahoo.com/dailynews/rss/weather/Old_Station__CA/*http://weather.yahoo.com/forecast/USCA0801_f.html</link> 
        <pubDate>Fri, 30 Dec 2011 11:53 am PST</pubDate> 
        <yweather:condition code="26" 
         date="Fri, 30 Dec 2011 11:53 am PST" temp="51" text="Cloudy"/> 
        <description><![CDATA[ 
<img src="http://l.yimg.com/a/i/us/we/52/26.gif"/><br /> 
<b>Current Conditions:</b><br /> 
Cloudy, 51 F<BR /> 
<BR /><b>Forecast:</b><BR /> 
Fri - Rain/Snow Showers. High: 43 Low: 21<br /> 
Sat - Partly Cloudy. High: 48 Low: 23<br /> 
<br /> 
<a href="http://us.rd.yahoo.com/dailynews/rss/weather/Old_Station__CA/*http://weather.yahoo.com/forecast/USCA0801_f.html">Full Forecast at Yahoo! Weather</a><BR/><BR/> 
(provided by <a href="http://www.weather.com" >The Weather Channel</a>)<br/> 
]]></description> 
        <yweather:forecast code="5" date="30 Dec 2011" 
         day="Fri" high="43" low="21" text="Rain/Snow Showers"/> 
        <yweather:forecast code="30" date="31 Dec 2011" 
         day="Sat" high="48" low="23" text="Partly Cloudy"/> 
        <guid isPermaLink="false">USCA0801_2011_12_31_7_00_PST</guid> 
       </item> 
      </channel> 
     </rss> 
    </results> 
</query>