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Re: WeatherData - many properties unavailable?

  • To: mathgroup at smc.vnet.net
  • Subject: [mg96318] Re: WeatherData - many properties unavailable?
  • From: Jean-Marc Gulliet <jeanmarc.gulliet at gmail.com>
  • Date: Wed, 11 Feb 2009 05:23:09 -0500 (EST)
  • Organization: The Open University, Milton Keynes, UK
  • References: <gmrm7r$9pd$1@smc.vnet.net>

In article <gmrm7r$9pd$1 at smc.vnet.net>,
 Jason Evans <jason at bluejalapeno.com> wrote:

> I am interested in the WeatherData function, but it appears that a lot
> of data is unavailable.  For example, for the 20 weather stations
> closest to "New York" (where I live), Visibility, CloudCoverFraction,
> and PrecipitationRate are "Missing[NotAvailable]".  I understand that
> not all properties are always available, but these seem to be pretty
> basic, important properties, and this information *is* available if
> you go to websites for the individual weather stations.
> 
> Example code to show the property for the 20 stations closest to New
> York would be:
> 
> Map[WeatherData[#, "Visibility"] &, WeatherData[{"New York", 20}]]
> 
> I also tried this for other large cities, such as Dallas and Chicago,
> with similar results.
> 
> Am I doing something wrong, or is a lot of the data just not available
> through Mathematica?

Unfortunately, your are right in assuming that a lot of data is not --- 
yet? --- available through the Mathematica curated data system. And this 
is not just about weather data, as many recent posts on this discussion 
list tend to suggest.

Regards,
--Jean-Marc


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