Hi David,

your code works perfectly on my dataset, thanks for the detailed example
and for your time!

Best,
Simone


2013/6/26 David Carlson <dcarlson@tamu.edu>

> Your data is probably not arranged correctly. See if this works for
> your data:
>
> > # Creating a reproducible example
> > set.seed(42)
> > dat <- matrix(rnorm(100*15, 5, 5)+rep(1:15, each=100), 15, 100,
> byrow=TRUE)
> > str(dat)
>  num [1:15, 1:100] 12.85 13 -2 8.98 16.67 ...
> > require(gplots)
> > # Rearranging dat as a data.frame with a time variable (1 to 15)
> and the experimental value (val)
> > # See the result of str(dat2) below for the structure
> > dat2 <- data.frame(time=rep(1:15, each=100),
> val=as.vector(t(dat)))
> > str(dat2)
> 'data.frame':   1500 obs. of  2 variables:
>  $ time: int  1 1 1 1 1 1 1 1 1 1 ...
>  $ val : num  12.85 3.18 7.82 9.16 8.02 ...
> > plotmeans(val~time, dat2, n.label=FALSE)
>
> -------------------------------------
> David L Carlson
> Associate Professor of Anthropology
> Texas A&M University
> College Station, TX 77840-4352
>
> -----Original Message-----
> From: r-help-bounces@r-project.org
> [mailto:r-help-bounces@r-project.org] On Behalf Of Simone
> Gabbriellini
> Sent: Wednesday, June 26, 2013 10:20 AM
> To: r-help@r-project.org
> Subject: [R] help with plotmeans (gplots)
>
> Dear List,
>
> I have replicated an experiment 100 times. Each experiment lasts for
> 15
> iteration. Thus I have collected results into a data.frame with 100
> columns
> (one column for each experiment) and 15 rows (one row for each
> iteration).
>
> I would like to plot mean values at each iteration using plotmeans,
> but I
> am unable to understand the syntax I should use. I tried:
>
> times<-as.factor(seq(1,15))
>
> plotmeans(data~times)
>
>
> with no luck... what should I tell to plotmeans in order to evaluate
> my
> dataset?
>
>
> Best regards,
>
> Simone
>
> --
> Simone Gabbriellini, PhD
>
> PostDoc@DISI, University of Bologna
> mobile: +39 340 39 75 626
> email: simone.gabbriellini@unibo.it
> academia.edu: http://goo.gl/7pq62
>
> DigitalBrains srl
> Amministratore
> mobile: +39 340 39 75 626
> email: simone.gabbriellini@digitalbrains.it
> home: www.digitalbrains.it
>
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>
> ______________________________________________
> R-help@r-project.org mailing list
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> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>
>


-- 
Simone Gabbriellini, PhD

PostDoc@DISI, University of Bologna
mobile: +39 340 39 75 626
email: simone.gabbriellini@unibo.it
academia.edu: http://goo.gl/7pq62

DigitalBrains srl
Amministratore
mobile: +39 340 39 75 626
email: simone.gabbriellini@digitalbrains.it
home: www.digitalbrains.it

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