hi

It seems rather complicated. AFAIK cor gives you correlation matrix, you can check items in this matrix but I do not understand your rules.
?
Cheers
Petr

-----Original Message-----
From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-
project.org] On Behalf Of Cox Lwaka
Sent: Friday, November 14, 2014 10:20 AM
To: r-help at r-project.org
Subject: Re: [R] hi

Thanks,Following your explanation i have through bi conductor but still
unable to figure out how to group. for the data, my data takes values
0,1,2  hence simulating from a multinomial distribution such as
(rmultinom(10, size = 3, prob = c(0.1,0.2,0.8))) gives 10 variables
from three individuals assume this variables are ordered.I am to
develop an r algorithm that will develop groups as follows;
i) Calculate the correlation between successive variables and
correlation matrix for all the variables
ii) if r(i) is the maximum correlation coefficient in the successive
variable correlation then my first group has variables [x(i-k ),
...x(i),... x(i+k )]. this gives me group one of size 2k+1. note that
variables are picked on that line and order is maintained.iii) the max
r is removed from the list of successive correlation between variables,
but we don't recalculate the correlation since this will destroy the
array.
iv)check for remaining correlation btn successive variables relative to
the bigger correlation matrix and select  other groups. these groups
don't need to be of same size and they must not overlap.
e.g,if for instance  x1, x2,......x10   are my 10 variables. i
calculate correlation btn successive variable. Say the max correlation
is  Cor(x4,x5) i take group one to have values (x2,x3,x4,x5),   my data
remains,   x1,-,-,-,-,x6,x7,x8,x9,x10. Clearly x1 will form a group and
the algorithm has to check for other groups form x6,x7,x8,x9,x10 based
on max r and also the correlation matrix.

Note that i have large number of variables. i don't need the groups to
overlap i will have divided in to disjoint groups but maintaining the
order.
kindly assist me see how i can get this done, thanks

     On Thursday, November 13, 2014 1:50 PM, Cox Lwaka
<clwaka at yahoo.com> wrote:


 I have a bit of trouble here to program in r. I am anew user but i
really enjoy working with it.I have a large number of variables in a
matrix that are arranged sequentially on a line (chromosome). This
order has to be maintained whatsoever. I am to develop an r algorithm
that will develop groups as follows;i) Calculate the correlation
between successive variables and correlation matrix for all the
variables
ii) if r(i) is the maximum correlation coefficient in the successive
variable correlation then my first group has variables [x(i-k ),
...x(i),... x(i+k )]. this gives me group one of size 2k+1. note that
variables are picked on that line and order is maintained.iii) we check
for remaining correlation btn successive variables relative to the
bigger correlation matrix and select  other groups. these groups don't
need to be of same size and they must not overlap.i will have divided
in to disjoint groups but maintaining the order.kindly assist me see
how i can get this done, thanks



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