[R] R functions

B77S bps0002 at auburn.edu
Thu Sep 15 23:39:27 CEST 2011


You'll never figure it out if you don't "play around" with your data.  

Assuming you have been able to import the data, a good place to start is to
look at what tools you have available.    Check out this:
http://cran.r-project.org/doc/contrib/Short-refcard.pdf

check out things like
?which
?max
?unique


You have 2 choices, hope that someone hands you a solution, or fiddle around
until you become proficient.

Good luck.



sujitha wrote:
> 
> Hi group,
> I am trying to right a code to do the following
> This is how the test file looks like:
> Chr start end sample1 sample2
> chr2 9896633 9896683 0 0
> chr2 9896639 9896690 0 0
> chr2 14314039 14314098 0 -0.35
> chr2 14404467 14404502 0 -0.35
> chr2 14421718 14421777 -0.43 -0.35
> chr2 16031710 16031769 -0.43 -0.35
> chr2 16036178 16036237 -0.43 -0.35
> chr2 16048665 16048724 -0.43 -0.35
> chr2 37491676 37491735 0 0
> chr2 37702947 37703009 0 0
> 
> Now I want to summarize the values like 
> Sample Chr Start End Values Probes
> 1 chr2 9896633 14404502 0 4
> 1 chr2 14421718 16048724 -0.43 4
> 1 chr2 37491676 37703001 0 2
> 2 chr2 9896633 9896690 0 2
> 2 chr2 14314039 16048724 -0.35 6
> 2 chr2 37491676 37703009 0 2
> 
> Here the start for the first line would be the least value until values
> are similiar (4) then the end would be highest value. The values is the
> unique value among the common values.
> Can I get some ideas or suggestions to perform this because I am new to
> hard core program in R? 
> waiting for your suggestions,
> Thanks,
> suji
> 


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