Hi > -----Original Message----- > From: r-help-boun...@r-project.org [mailto:r-help-bounces@r- > project.org] On Behalf Of Paolo Donatelli > Sent: Wednesday, January 09, 2013 5:03 PM > To: r-help@r-project.org > Subject: [R] Basic loop programming > > Hi all, > > newbie question: I am trying to set up a very simple loop without > succeeding. > > Let's say I have monthly observation of two variables for a year > - Sales_2012_01, Sales_2012_02, Sales_2012_03, .... (total sales > for jan 2012,feb 2012, etc.) > - Customers_2012_01, Customers_2012_02, .... (total number of > customers for jan 2012, etc.) > > and I want to create new monthly variables in order to compute revenues > per customers: > > Av_revenue_2012_01 = Sales_2012_01 / Customers_2012_01 > Av_revenue_2012_02 = Sales_2012_02 / Customers_2012_02 ... > > how can I proceed? > > > In other programming language I used just to write something like for > (i in list("01","02, ..., "12") { Av_revenue_2012_'i' = Sales_2012_'i' > / Customers_2012_'i' > } > > but in R it seems not to work like that. Further, and correct me if I > am wrong, I cannot use simple (i in 1:12) since I have a 0 digit in > front of the single-digit months.
Hm. Why do you want to do it in R if you prefer other languages? Did you find R by accident or are you prepared to use it in future? If you want to use it, it is just right time to learn some basics. Anyway, if you have 2 vectors, call them sales and customers, you can just do av.revenue <- sales/customers Until you do not provide more info about your data e.g. by at least some of ?head, ?str or preferably ?dput you hardly get some suitable advice. Regards Petr > > thanks in advance for your help > > ______________________________________________ > 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.
