title: How to oAuth weather yahoo api
body: <p>I use this code to access weather data from yahoo and everything just work fine.
  Somehow this stops working getting a "Bad request" from yahoo...</p>
  
  <p>"Please provide valid credentials. OAuth oauth_problem="OST_OAUTH_PARAMETER_ABSENT_ERROR", realm="yahooapis.com"
  "</p>
  
  <p>I try to understood what happed and i think that has to do with the oAuth from yahoo but i don't know how to use it and the documentation from yahoo sucks...</p>
  
  <p>code below..</p>
  
  <p><code>mForcastTown.Add(MainForm.ExtraFE_IdHttp.Get('http://weather.yahooapis.com/forecastrss?w='+ mAdd_Town[mTonwNum].mWoeID +'&amp;u='+ mAdd_Town[mTonwNum].mDegree);</code></p>
  
  <p>Thank you...</p>
  
  <p>UPDATE...</p>
  
  <p>I found this below and when run in the browser i get the xml i need but when i run it to the </p>
  
  <pre><code>IdHttp.get('http://query.yahooapis.com/v1/public/yql?q=select%20*%20from%20weather.forecast%20where%20woeid=55903793%20and%20u=%27c%27&amp;format=xml') 
  </code></pre>
  
  <p>i get unknown version found... </p>
  
  <p>What is this... 
  Thank you...</p>