Why Diffbind function dba.peakset gives 1
2
0
Entering edit mode
galib36 ▴ 10
@galib36-9138
Last seen 6.9 years ago
United Kingdom

Hello Rory,

I am using diffbind to extract the raw counts for my PEAKS. I used the function

myData.RawCount <- dba.count(myData, score=DBA_SCORE_READS)

myData.RawCount.value <- dba.peakset(myData.RawCount, bRetrieve=TRUE, writeFile="../RawReads.txt")

I am using it for Single-cell ATAC seq analysis. But when I open the file, I see that the file have no Zeros. Its only 1 and value above 1. But for peaks that does not have any count, shouldn't it be 0? Why there are 1 instead of 0s.

When I use, the bedtools multicov for counts, it gives me lots of zeros (as I would expect in single-cell)

 

Thank you.

 

Best Regards,

Syed

diffbind • 1.2k views
ADD COMMENT
0
Entering edit mode
Rory Stark ★ 5.2k
@rory-stark-5741
Last seen 5 weeks ago
Cambridge, UK
Hello Syed- DiffBind sets all read counts to a minimum value of 1. For purposes of calculating differential binding, differences in sampling at the single read level should not alter the results. Cheers- Rory Sent from my phone On 15 Apr 2016, at 07:56, galib36 [bioc] <noreply@bioconductor.org<mailto:noreply@bioconductor.org>> wrote: Activity on a post you are following on support.bioconductor.org<https: support.bioconductor.org=""> User galib36<https: support.bioconductor.org="" u="" 9138=""/> wrote Question: Why Diffbind function dba.peakset gives 1<https: support.bioconductor.org="" p="" 80888=""/>: Hello Rory, I am using diffbind to extract the raw counts for my PEAKS. I used the function myData.RawCount <- dba.count(myData, score=DBA_SCORE_READS) myData.RawCount.value <- dba.peakset(myData.RawCount, bRetrieve=TRUE, writeFile="../RawReads.txt") I am using it for Single-cell ATAC seq analysis. But when I open the file, I see that the file have no Zeros. Its only 1 and value above 1. But for peaks that does not have any count, shouldn't it be 0? Why there are 1 instead of 0s. When I use, the bedtools multicov for counts, it gives me lots of zeros (as I would expect in single-cell) Thank you. Best Regards, Syed ________________________________ Post tags: diffbind You may reply via email or visit Why Diffbind function dba.peakset gives 1
ADD COMMENT
0
Entering edit mode

Asking the following question just for a bit of more clarification,

I have two sets of single cells, each composed of 96 cells. When using bedtools multimap, I combine the peakset from all these 192 cells and then count the overlapping peaks to have the count for each cell. I was wondering, is this the same approach that Diffbind takes. Because I found some dissimilarity in the count of Diffbind and bedtools multicov.

 

Thank you again.

Best Regards,

Syed

ADD REPLY
0
Entering edit mode
galib36 ▴ 10
@galib36-9138
Last seen 6.9 years ago
United Kingdom

Thank you for the Clarification

ADD COMMENT

Login before adding your answer.

Traffic: 616 users visited in the last hour
Help About
FAQ
Access RSS
API
Stats

Use of this site constitutes acceptance of our User Agreement and Privacy Policy.

Powered by the version 2.3.6