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.
