Joanne,
Given a peak dataset peaks in RangedData and an annotation dataset
miRNAs you obtained from getAnnotation, then you can use the following
code to obtain the nearest miRNAs.
nearest.miRNAs = as.data.frame(annotatePeakInBatch(peaks,
AnnotationData = miRNAs))
Please type ?annotatePeakInBatch in R to view other examples.
You can also access the documentation at
http://www.bioconductor.org/p
ackages/2.10/bioc/vignettes/ChIPpeakAnno/inst/doc/ChIPpeakAnno.pdf,
and the publication at
http://www.biomedcentral.com/1471-2105/11/237/.
Best regards,
Julie
On 8/30/12 4:02 PM, "Ngeow, Joanne" <ngeowj@ccf.org> wrote:
Dear Julie,
Thank your for your response but I am unclear as to what you mean by
that- do you have a sample of the code to use to
1. get ensembl data for miRNA
2. correlate with my peaks
3. identify which miRNAs are the ones called out
I am sorry but I am very new to ChIPpeakAnno as you can tell. For TSS,
it is easier to find solutions on line but I cant seem to find what I
need on miRNAs
Thank you, your help is much appreciated
Joanne
On 8/29/12 6:04 PM, "Zhu, Lihua (Julie)" <julie.zhu@umassmed.edu>
wrote:
Joanne and Dingxia,
You need to call annotatePeakInBatch with your peaks and the
Annotation you obtained. By calling data(annotatedPeak), you are
running the examples in the ChIPpeakAnno package.
Best regards,
Julie
From: "Ngeow, Joanne" <ngeowj@ccf.org>
Date: Wed, 29 Aug 2012 16:17:21 -0400
To: Lihua Julie Zhu <julie.zhu@umassmed.edu>
Cc: "bioconductor@r-project.org" <bioconductor@r-project.org>
Subject: Re: RE ChIPPEAKANNO
Dear Julie,
Thanks. Ive attached it in the files. The output I got is shown but I
would like to identify what the peaks are and I am struggling with
that as well as am not sure if I am extracting the info correctly from
ensembl for miRNA
Thank you
Joanne
On 8/27/12 6:25 PM, "Zhu, Lihua (Julie)" <julie.zhu@umassmed.edu>
wrote:
Joanne,
Could you please send us the code snippet and session info? Thanks!
Best regards,
Julie
On 8/27/12 4:00 PM, "Ngeow, Joanne" <ngeowj@ccf.org> wrote:
Hi Julie,
I was using ChIPPeakAnno and was able to extract the distance to
nearest miRNA which is what I am interested in. I am having trouble
however going from that step to finding out which are the miRNAs that
is being mapped.Cant find the answer online/ blogs. Can you help?
Thank you
Best regards
Joanne Ngeow
Cancer Genetics Fellow
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