[R] Generating a histogram with R

Bert Gunter gunter.berton at gene.com
Tue Jul 12 22:00:04 CEST 2011


Hello:

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?histogram
?help

Also see the online manual tutorial "An Introduction to R"

-- Bert

On Tue, Jul 12, 2011 at 12:41 PM, a217 <ajn21 at case.edu> wrote:
> Hello,
>
> I have a sample file:
>
> chr22   100     150     125     21      0.145   +
> chr22   200     300     212     13      0.05    +
> chr22   345     365     351     12      0.09    +
> chr22   500     750     510     15      0.10    +
> chr22   500     750     642     9       0.02    +
> chr22   800     900     850     10      0.05    +
>
>
> where I need to generate a histogram from the data in column 6 (i.e. 0.145,
> 0.05, etc.). To make it easier to read, I would plot the data as 1-0.05=0.95
> for all of the data in column 6.
>
> What I would like to know is how to generate a histogram with the data from
> one file? Also, would I be able to generate one histogram from multiple
> files as well (with the same format)?
>
> For example, I have multiple files in the same format as the sample file
> above, and I would like to make one histogram for all column six data in all
> files.
>
> Thank you,
> a217
>
> --
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>
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>



-- 
"Men by nature long to get on to the ultimate truths, and will often
be impatient with elementary studies or fight shy of them. If it were
possible to reach the ultimate truths without the elementary studies
usually prefixed to them, these would not be preparatory studies but
superfluous diversions."

-- Maimonides (1135-1204)

Bert Gunter
Genentech Nonclinical Biostatistics



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