From: Christopher Winslett <christopherwinslett@...>
Date: 2006-04-14T11:14:15+09:00
Subject: Re: Metar Weather Grabber

Nope.

I guess I just wanted to learn how to use regular expressions.  I wish I 
would have found those a couple of hours ago.

Thanks for the post, that will help a lot.



Simon Kr旦ger wrote:
> Chris Winslett wrote:
>> I don't want to pay money to get weather feeds from a bunch of different 
>> countries.  So I took my hand at writing my own.  It is for an ajax 
>> service that grabs the XML.
>> 
>> If you use this, expand on it.  If you expand on it, post it back on 
>> here.  There are somethings I haven't gotten to yet.  The usage of the 
>> weather codes needs to get better too.
> 
> Hi Chris,
> is there something wrong with the decoded data?
> 
> ----------------------------------------------------------------------
> require 'open-uri'
> 
> url = 'ftp://weather.noaa.gov/data/observations/metar/decoded/KLGA.TXT'
> open(url) do |f|
>   weather = f.read.to_a.map {|line| line.strip.split(':')}
>   label = weather.shift.first.split(',').first
>   date = weather.shift.first
>   puts %Q[<CurrentWeather label = "#{label}" date = "#{date}">]
>   weather.each do |w|
>     key = w.first.tr('()', ' ').delete(' ')
>     puts %Q[  <#{key}>#{w[1].strip}</#{key}>]
>   end
>   puts '</CurrentWeather>'
> end
> ----------------------------------------------------------------------
> 
> output:
> ----------------------------------------------------------------------
> <CurrentWeather label = "New York" date = "Apr 13, 2006 - 04">
>   <Wind>from the NW (320 degrees) at 9 MPH (8 KT)</Wind>
>   <Visibility>10 mile(s)</Visibility>
>   <Skyconditions>partly cloudy</Skyconditions>
>   <Temperature>75.0 F (23.9 C)</Temperature>
>   <DewPoint>35.1 F (1.7 C)</DewPoint>
>   <RelativeHumidity>23%</RelativeHumidity>
>   ...
> </CurrentWeather>
> ----------------------------------------------------------------------
> 
> cheers
> 
> Simon


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