On Wednesday 20 August 2008, Josh B wrote:
> > Works for me:
> > x <- read.csv('christina.txt')
> >
> > x.list <- by(x, x$gen, function(d) {
> > d.clean <- d[,-1]
> > cov(d.clean, y= NULL, use= "complete.obs", method="pearson")
> > } )
> >
> >note that the output is a list, where each element corre
> Works for me:
> x <- read.csv('christina.txt')
>
> x.list <- by(x, x$gen, function(d) {
> d.clean <- d[,-1]
> cov(d.clean, y= NULL, use= "complete.obs", method="pearson")
> } )
>
>note that the output is a list, where each element corresponds to one
>level of 'gen'. if you need to write each elem
ECTED]>
> Cc: r-help@r-project.org
> Sent: Wednesday, August 20, 2008 10:58:26 AM
> Subject: Re: [R] Looping over groups
>
> On Wed, Aug 20, 2008 at 7:48 AM, Josh B <[EMAIL PROTECTED]> wrote:
>> Hello,
>>
>> My R skills are somewhere between novice and intermedia
OTECTED]>
To: Josh B <[EMAIL PROTECTED]>
Cc: r-help@r-project.org
Sent: Wednesday, August 20, 2008 10:58:26 AM
Subject: Re: [R] Looping over groups
On Wed, Aug 20, 2008 at 7:48 AM, Josh B <[EMAIL PROTECTED]> wrote:
> Hello,
>
> My R skills are somewhere between novice and
Dylan Beaudette wrote:
> On Wed, Aug 20, 2008 at 7:48 AM, Josh B <[EMAIL PROTECTED]> wrote:
>
>> Hello,
>>
>> My R skills are somewhere between novice and intermediary, and I am hoping
>> that some of you very helpful forum members, whom I've seen work your magic
>> on other peoples' problems/
On Wed, Aug 20, 2008 at 7:48 AM, Josh B <[EMAIL PROTECTED]> wrote:
> Hello,
>
> My R skills are somewhere between novice and intermediary, and I am hoping
> that some of you very helpful forum members, whom I've seen work your magic
> on other peoples' problems/questions, can help me here.
>
> I
Hello,
My R skills are somewhere between novice and intermediary, and I am hoping that
some of you very helpful forum members, whom I've seen work your magic on other
peoples' problems/questions, can help me here.
I have a matrix with the following format:
(i) individual plants comprising many
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