weatherData

weatherData is a collection of functions that will fetch weather (Temperature, Pressure, Humidity etc.) data from the Web for you as clean data frame.

data(London2013)

This is a data frame of Ambient temperature data, extracted from Weather Undergound. Each row has two entries (columns).

• The Timestamp (YYYY-MM-DD HH:MM:SS) and the
• TemperatureF (in degrees F)

Other Datasets Available

• Mumbai2013 Data - Ambient Temperature for the City of Mumbai, India for all of 2013
• NewYork2013 Data - Ambient Temperature for New York City for all of 2013
• SFO2012 Data - Ambient Temperature for the City of San Francisco for all of 2012
• SFO2013 Data - Ambient Temperature for the City of San Francisco for all of 2013
• SFO2013Summarized Data - Ambient Temperature for SFO, for 2013. (365 rows, one per day)

Example of Using the Built-in Data Frame

Say you wanted to find out the Date and Time in 2013 when it was hottest in Mumbai

We can use the built-in Dataset for this:

> max(Mumbai2013$Temperature)
 [1] 102.2

By using which.max we can find the row in specific row in the data set. Once we get the data set, we can print out other relavant details as well.

> which.max(Mumbai2013$Temperature)
 [1] 3212 

Putting it together:

> Mumbai2013[which.max(Mumbai2013$Temperature), ]
                     Time Temperature
 3212 2013-03-07 13:10:00       102.2

So, on March 7th Mumbai experienced the highest temperature for the year 2013.

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