Hello everyone !

Here is my solution, actually it's my first ruby program, I just
started learning... Suggestions on how to improve my code are 
welcome :)

This is how it looks when executed, I couldn't find where to turn
these warnings off :/

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root@black /# ./weather.rb madrid
ignored element: {http://schemas.xmlsoap.org/wsdl/http/}binding
ignored element: {http://schemas.xmlsoap.org/wsdl/http/}operation
ignored element: {http://schemas.xmlsoap.org/wsdl/http/}urlEncoded
ignored element: {http://schemas.xmlsoap.org/wsdl/mime/}mimeXml
ignored element: {http://schemas.xmlsoap.org/wsdl/mime/}content
ignored element: {http://schemas.xmlsoap.org/wsdl/http/}address
The temperature in Madrid / Cuatro Vientos is 3 C

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#!/usr/local/bin/ruby
require 'soap/wsdlDriver'
require 'rexml/document'

URL = 'http://www.webservicex.net/globalweather.asmx?WSDL'

# process the comandline arguments
if ARGV[0] == nil
  abort("Usage: weather.rb city")
else
  city = ARGV.join(' ')
end

soap = SOAP::WSDLDriverFactory.new(URL).create_rpc_driver
begin
  weather = soap.GetWeather(:CityName => city, :CountryName => "")
  
  # strip the first line with <? ?> stuff, else REXML wont parse
  xml = weather.getWeatherResult.gsub(/(<\?.*?>\n)/, '')
  data = REXML::Document.new(xml)
  
  # celsius degrees are in parentheses
  data.elements["//Temperature"].text[/\((.*)\)/]; temp = $1
  data.elements["//Location"].text[/^(.*),/]; loc = $1
  
  # show the gathered data
  puts "The temperature in " + loc + " is " + temp
rescue
  puts "Could not find data for your supplied city: " + city
end

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Best regards,
Rudolfs