Is this homework? (We generally don't do homework here). However, hint: ?table and links therein.
Also, as you can see below, post in plain text, not HTML, which is stripped and can lead to hard-to-read gobbledygook. Cheers, Bert Gunter Genentech Nonclinical Biostatistics (650) 467-7374 "Data is not information. Information is not knowledge. And knowledge is certainly not wisdom." H. Gilbert Welch On Sun, Dec 29, 2013 at 5:40 AM, Jingxia Lin <jingxi...@gmail.com> wrote: > Dear R helpers, > > I have a data sheet (“milk”) with four types of milk from five brands (A, > B, C, D, E), the column shows the brands that each customer chose for each > type of the milk they bought. The data sheet goes like below. You can see > for some type of milk, no brand is chosen. > > fatfreemilk fatmilk halfmilk 2fatmilk > A A A A > A B B A > B A A A > C C C C > D A A A > A E A E > C A B A > A A A A > A B B A > A A B E > > I want to summarize each column so that for each type of milk, i know the > counts and percentages of the brands chosen for each milk type. I tried > "summary" in R, but the result is not shown nicely. How I can display the > result in a way like below: > A B C D E > fatfreemilk 6(60) 1(10) 2(20) 1(10) 0(0) > fatmilk 6(60) 2(20) 1(10) 0(10) 1(10) > halfmilk 5(50) 4(40) 1(10) 0(0) 0(0) > 2fatmilk 7(70) 0(0) 1(10) 0(0) 2(20) > > Thank you! > > [[alternative HTML version deleted]] > > > ______________________________________________ > 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.
