Ista, I have looked at the reshape package and have used Âmelt¹ successfully on simpler tables. I tried it here, but have not been successful. I think I just need to gain experience. I am loving R and am having a difficult time with data structure issues.
I am attaching the data set that I am trying to manipulate. Ultimately, I would like to be able to analyze these data with ANOVA and repeated measures, and also be able to plot growth, wt * days. I appreciate any help or guidance on references to read that will help me solve my problems. The data set represents wt over time (starting with days=0, birth day) for steers. Factors include Stockering and Finishing treatments. Regards, Bill On 3/29/10 3:39 PM, "Ista Zahn [via R]" <ml-node+1695531-1043721504-210...@n4.nabble.com> wrote: > Hi Bill, > Without an example dataset it's hard to see exactly what you need to > do. But you can get started by looking at the documentation for the > reshape function (?reshape), and by looking at the reshape package. > The reshape package has an associated web page > (http://had.co.nz/reshape/) with links to papers and other information > to help you get started. > > Best, > Ista > > On Mon, Mar 29, 2010 at 3:15 PM, wclapham <[hidden email] > <http://n4.nabble.com/user/SendEmail.jtp?type=node&node=1695531&i=0> > <http://n4.nabble.com/user/SendEmail.jtp?type=node&node=1695531&i=0> > > wrote: > >> > >> > I have a data frame that I created using read.table on a csv spreadsheet. >> > The data look like the following: >> > >> > Steer.ID  stocker.trt  Finish.trt  Date  Days Wt ...... >> > >> > Steer.Id, stocker.trt, Finish.trt are factors------ Date, Days, Wt are data >> > that are repeated 23 times (wide format). >> > >> > I want to reshape the data such that I have the correct Steer.ID, >> > stocker.trt, Finish.trt identifying all of the repeated measures data in a >> > long  format. >> > >> > I am a newbie at R and need to develop the skill in reshaping data, so that >> > I can handle routine problems like described above. >> > >> > Thanks so much in advance for help or advice. >> > >> > Bill >> > -- >> > View this message in context: >> http://n4.nabble.com/Reshaping-a-data-frame-with-a-series-of-factors-and-23-r >> epeated-measures-tp1695500p1695500.html >> > Sent from the R help mailing list archive at Nabble.com. >> > >> > ______________________________________________ >> > [hidden email] >> <http://n4.nabble.com/user/SendEmail.jtp?type=node&node=1695531&i=1> >> <http://n4.nabble.com/user/SendEmail.jtp?type=node&node=1695531&i=1> >> 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. >> > > > -- View this message in context: http://n4.nabble.com/Reshaping-a-data-frame-with-a-series-of-factors-and-23-repeated-measures-tp1695500p1745223.html Sent from the R help mailing list archive at Nabble.com. [[alternative HTML version deleted]]
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