Dear Thomas, more for the sake of completeness and as an alternative to R. There are GRIB data [1] sets available (some for free) and there is the GPL software Grads [2]. Because the Grib-Format is well documented it should be possible to get it into R easily and make up your own plots/weather analyis. I do not know and have not checked if somebody has already done so.
I use this information/tools aside of others during longer-dated off-shore sailing. Best, Bernhard [1] http://www.grib.us/ [2] http://www.iges.org/grads/ >-----Ursprüngliche Nachricht----- >Von: r-help-boun...@r-project.org >[mailto:r-help-boun...@r-project.org] Im Auftrag von Scillieri, John >Gesendet: Donnerstag, 26. Februar 2009 22:58 >An: 'James Muller'; 'r-help@r-project.org' >Betreff: Re: [R] Download daily weather data > >Looks like you can sign up to get XML feed data from Weather.com > >http://www.weather.com/services/xmloap.html > >Hope it works out! > >-----Original Message----- >From: r-help-boun...@r-project.org >[mailto:r-help-boun...@r-project.org] On Behalf Of James Muller >Sent: Thursday, February 26, 2009 3:57 PM >To: r-help@r-project.org >Subject: Re: [R] Download daily weather data > >Thomas, > >Have a look at the source code for the webpage (ctrl-u in firefox, >don't know in internet explorer, etc.). That is what you'd have to >parse in order to get the forecast from this page. Typically when I >parse webpages such as this I use regular expressions to do so (and I >would never downplay the usefulness of regular expressions, but they >take a little getting used to). There are two parts to the task: find >patterns that allow you to pull out the datum/data you're after; and >then write a program to pull it/them out. Also, of course, download >the webpage (but that's no issue). > >I bet you'd be able to find a comma separated value (CSV) file >containing the weather report somewhere, which would probably involve >a little less labor in order to produce your automatic wardrobe >advice. > >James > > > >On Thu, Feb 26, 2009 at 3:47 PM, Thomas Levine ><thomas.lev...@gmail.com> wrote: >> I'm writing a program that will tell me whether I should wear a coat, >> so I'd like to be able to download daily weather forecasts and daily >> reports of recent past weather conditions. >> >> The NOAA has very promising tabular forecasts >> >(http://forecast.weather.gov/MapClick.php?CityName=Ithaca&state =NY&site=BGM&textField1=42.4422&textField2=-76.5002&e=0>&FcstType=digital), >> but I can't figure out how to import them. >> >> Someone must have needed to do this before. Suggestions? >> >> Thomas Levine! >> >> ______________________________________________ >> R-help@r-project.org mailing list >> https://stat.ethz.ch/mailman/listinfo/r-help >> PLEASE do read the posting guide >http://www.R-project.org/posting-guide.html >> and provide commented, minimal, self-contained, reproducible code. >> > >______________________________________________ >R-help@r-project.org mailing list >https://stat.ethz.ch/mailman/listinfo/r-help >PLEASE do read the posting guide >http://www.R-project.org/posting-guide.html >and provide commented, minimal, self-contained, reproducible code. >>>> This e-mail and any attachments are confidential, may >contain legal, professional or other privileged information, >and are intended solely for the addressee. If you are not the >intended recipient, do not use the information in this e-mail >in any way, delete this e-mail and notify the sender. CEG-IP1 > >______________________________________________ >R-help@r-project.org mailing list >https://stat.ethz.ch/mailman/listinfo/r-help >PLEASE do read the posting guide >http://www.R-project.org/posting-guide.html >and provide commented, minimal, self-contained, reproducible code. > ***************************************************************** Confidentiality Note: The information contained in this ...{{dropped:10}} ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
