Re: [R] Identify groups

From: mike Ad. <mikeaddr_at_hotmail.com>
Date: Sat, 17 May 2008 15:40:05 -0400

Hi,

Here is an example
of the question I posted yesterday. Suppose there are 10 data sets, each contains 100 values. In data set #3, #5, #9, there are different subgroups. Is there a way to identify these kind of data set?

data=matrix(runif(1000),
10, 100);data[3,61:90]=runif(30)+1;

data[5,1:40]=runif(40)+3;
data[5,81:100]=runif(20)+5;
data[9,1:20]=runif(20)+2;
data[9,31:60]=runif(30)+4;
data[9,71:90]=runif(20)+6;





Many
thanks!
/Mike  

On Fri, May 16, 2008 at 4:52 PM, mike Ad. wrote:  

> Dear group,
>
> I have hundreds
> of independent data sets, each data sets contains >100 values. In some
> data
> sets, all the values can be classified into several groups with clear
> difference between groups; while in some other data sets, all the
> values are
> randomly distributed. I would like to find a statistics method to
> automatically
> pick out the data sets which have group pattern, or specifically found
> data
> sets have certain number of groups, e.g. 2, 3, 4.
> Are there
> any functions or packages that could solve this issue, or any other
> suggestions?
> Many Thanks!
>
> /Mike
>
>
>



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