Hi John,

1) Read the help for the "reshape" package.  What you want is to use the
"melt" function.
2) There are various ways of doing Repeated measures Anova in R, you might
want to have a look at this:
http://www.r-statistics.com/2010/04/repeated-measures-anova-with-r-tutorials/
(I especially like the "ezANOVA" function)

Cheers,
Tal


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On Sat, Jul 17, 2010 at 6:42 PM, jlwoodard <john.woodard@wayne.edu> wrote:

>
> I am trying to reshape data that are in the wide format into the long
> format.
> The design is a repeated-measures design, which combined 3 levels of shape
> (circle, square, triangle) with 3 levels of color (Blue, Red, Green), for a
> total of 9 variables.  The wide data look like this (sorry I couldn't get
> the columns to line up quite right:
>
>   Subject CircleBlue CircleRed CircleGreen SquareBlue SquareRed SquareGreen
> TriangleBlue TriangleRed TriangleGreen
> 1      101         95        100       100         95        100       100
> 60         80        75
> 2      102         80         90       100         85         90       100
> 55         45        45
>
> I would like to convert the data to the following format so that I could do
> a repeated measures ANOVA:
>
> Accuracy  Subject       Shape   Color
> 95           subj101    Circle  Blue
> 80           subj102    Circle  Blue
> 100          subj101    Circle  Red
> 90           subj102    Circle  Red
> 100          subj101    Circle  Green
> 100          subj102    Circle  Green
> 95           subj101    Square       Blue
> 85           subj102    Square       Blue
> 100          subj101    Square       Red
> 90           subj102    Square       Red
> 100          subj101    Square       Green
> 100          subj102    Square       Green
> 60           subj101    Triangle      Blue
> 55           subj102    Triangle      Blue
> 80           subj101    Triangle      Red
> 45           subj102    Triangle      Red
> 75           subj101    Triangle      Green
> 45           subj102    Triangle      Green
>
> I've been able to accomplish the task using the stack command, together
> with
> some fairly lengthy code to reorganize the stacked data frame.  Is it
> possible to use the reshape command to accomplish this task in a more
> straightforward manner?   Many thanks in advance!
>
> John
>
>
> --
> View this message in context:
> http://r.789695.n4.nabble.com/Help-with-Reshaping-from-Wide-to-Long-tp2292462p2292462.html
> Sent from the R help mailing list archive at Nabble.com.
>
> ______________________________________________
> 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.
>

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