[R] row data manipulation in data frame

R users, I am a beginner in R. I have a time series data on various macro variables like GDP, unemployment rate, consumer spending, imports, exports etc. I am interested in calculating year over year growth rate for each of those variables. Is there any simple function in R for carrying out such

[R] Personal invitation from srinivasa raghavan

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[R] odfweave sample code error

Hi R-team, I am new user of R 2.8.1 in windows 2003 environment. I use Tinn-R as code editor. When running the sample codes from odf manual the following error occured. I have winzip installed in my system. I used openoffice writer under windows to create the example1.odt file. can anybody help

[R] Personal invitation from srinivasa raghavan

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[R] text vector clustering

Hi, I am a new user of R using R 2.8.1 in windows 2003. I have a csv file with single column which contain the 30,000 students names. There were typo errors while entering this student names. The actual list of names is < 1000. However we dont have that list for keyword search. I am interested