[R] clustering with cosine correlation

2010-10-11 Thread l.mohammadikhankahdani

Dear All

 Do you know how to make a heatmap and use cosine correlation for 
clustering? This is what my colleague can do in gene-math and I want to 
do in R but I don't know how to.

Thanks a lot
Leila

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[R] heatmap

2010-10-12 Thread l.mohammadikhankahdani


Hi All

Has anyone used correlation (Pearson or cosine or others) for clustering 
in heatmaps?

If so, could  you please tell me how?
Thanks
Leila

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Re: [R] re-order the rows of a data frame accroding to a specified order of some column

2010-08-16 Thread l.mohammadikhankahdani

You can also write
x[match(z,x[,2]),].

Leila

on 2010/08/16 06:36 AM RICHARD M. HEIBERGER said the following:

Yes,

x[order(order(z)),]


Two uses of order are needed, as shown.


Rich


On Sun, Aug 15, 2010 at 11:47 PM, Leon Yee  wrote:


Dear all,

I have a data frame with several columns, and I have the specified
order of a given column. How can I re-order the rows of my data frame
accroding to this specified order? for example,

x = data.frame( num = 1:26, alpha = letters[1:26], stringsAsFactors=FALSE)
z = sample(x$alpha, replace=FALSE)
   Can I re-order x accroding to z ?

   Thanks,

Leon




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[R] running a program later

2010-08-24 Thread l.mohammadikhankahdani

Hi ALL

I want to run a program on my office computer, but for some reason I 
have to run it later when I am not in the office anymore.
Is there a way to do it? Can I run a program now but in the beginning I 
say that the rest should be run 3 hours later for example?

Thanks a lot

Leila

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