
Ista,

I have looked at the reshape package and have used melt¹ 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+1695531-1043721504-210803@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&amp;node=1695531&amp;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.
>> > 
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>> > 
> 
> 


 
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