[BioC] DEXSeq output - count file
Alejandro Reyes
alejandro.reyes at embl.de
Tue Apr 8 11:14:03 CEST 2014
Hi Jose,
Thanks for sending your data!
I had a look at it and the DEXSeq code seems to be doing what it is
suppose to do.
The reason you are getting low p-values (instead of high p-values) is
because the samples within the same group are very, very similar to each
other (the dispersion estimates reflect this) and very,very different
from the rest of the samples. You can already see in a pairs plot of the
normalized counts. What exactly is HYPOXIA2 and HYPOXIA3, are these
independent experiments (cell-lines?) treated with the same condition? I
understand these large differences are difficult to explain
biologically, I would first go back to the experimentalist and make sure
everything during the library preparation was different between your groups.
Alejandro
> Hi Alejandro,
> Yes, there is a batch effect. There are two experiments, exp1 with
> Controls and Hypoxia samples at 24h and a second at 48h. However the
> controls were always at 24h. In DESeq2 (and a limma/voom on exons I
> have to fetch the plot, I'll send it to you later) pca, you clearly
> see that the controls cluster well together(N1,N2,CTRL2,CTRL3) while
> 24 and 48 hours were separated. A DESeq2 analysis of the kind
> ~condition + experiment (but also ~condition ) gave good results. Also
> DEXSeq CTRL vs HYPOXIA (not including experiment as other factor)
> But in anycase, I would have expected higher p.values rather than lower.
> I will explore potential differences in terms of GC and other and will
> send you a dropbox link for the RData of the ecs and res objects.
> Thanks a lot!
> J
>
>
>
> 2014-04-03 14:47 GMT+02:00 Alejandro Reyes <alejandro.reyes at embl.de
> <mailto:alejandro.reyes at embl.de>>:
>
> Hi Jose,
>
> 98,000 hits!!?? Would if be possible for you to send me your raw input
> files
> offline? (via e.g. dropbox, ftp, etc: count files and DEXSeq flattened
> gtf file), so I can
> have a closer look at your data?
>
> Best regards,
> Alejandro
>
>
>
>
>
>
> > Hi Alejandro,
> > I apologize, I did not see the answer in
> >
> http://permalink.gmane.org/gmane.science.biology.informatics.conductor/53937
> > I was waiting for a Bioc... sorry about that.
> >
> > Ok, then those exons with very low log2FC and low p.value would
> > belong, if I got it right, to genes with many differentially used
> > exons and some with a very high log2FC, in that case, the linear
> model
> > would recognise wrongly as DU the complementary set of exons that
> > actually are not. Since you say that luckily these cases are
> > exceptions but I have ~98000 exons with p.adjust<0.05, I could have
> > something really interesting or a terrible flaw in my 48h
> compared to
> > my 24 h treated samples.
> > If the former case, I could run DEXSeq at the gene-level to identify
> > the genes and trust, which log2FC? or which p.values? to detect
> > interesting exons?
> > I first thought to put a threshold of log2FC, but the "volcano" was
> > strange with few volcano-like behaviour.
> > or better should I make gene-level DEXSeq and then filter out those
> > genes with very huge log2FC exons.
> > Thanks again for your help
> > Jose
> >
> >
> >
> > 2014-04-03 13:15 GMT+02:00 Alejandro Reyes
> <alejandro.reyes at embl.de <mailto:alejandro.reyes at embl.de>
> > <mailto:alejandro.reyes at embl.de <mailto:alejandro.reyes at embl.de>>>:
> >
> > Hi Jose,
> >
> > I have an e-mail answering to this thread on the 24.03.2014,
> maybe you
> > missed it or did I write your e-mail wrong?
> >
> >
> http://permalink.gmane.org/gmane.science.biology.informatics.conductor/53937
> >
> > Your concern is answered by the second point that I describe
> > there. If you
> > look at your "fitted splicing" plot, you can see this. The
> > extreme case
> > is the coefficients fitted
> > for your exon E032, it has a value of ~40,000 in one of your
> > conditions
> > and a value of ~800 on
> > your other conditions. This will affect the estimation of
> > relative exon
> > abundances from
> > your other exons. As I mentioned before, this is a
> limitation of the
> > DEXSeq model,
> > but luckily, genes like this cases seem to be exceptions rather
> > than the
> > rule
> > (at least in my experience!).
> >
> > About using the output from voom to test for DEU, I have not
> explored
> > that option,
> > but maybe the maintainers/authors of that package are able to
> > guide you
> > better.
> >
> > Hope it is useful,
> > Alejandro
> >
> >
> >
> >
> > > Dear Alejandro,
> > > Have you had time to take a look at my problem (please see
> below)?
> > > I am now using DEXSeq 1.9 to analyze the same ecs objects
> I had
> > > analyzed with 1.8 but it produces the very same results.
> The problem
> > > was regarding too many exons with very low log2FC and very low
> > > p.values. I send here an object with the subsetByGene
> (ecs.one) with
> > > one particular gene. The E029 has a very low p.value with
> a very low
> > > log2FC. Either the log2FCs are not OK or the p.values. I
> cannot
> > > understand how such low log2FC for the DEU analysis can give
> > those low
> > > p.values. Indeed the complete original ecs gave me 98000
> exons with
> > > table(res.48$padjust<0.05).
> > > However the same analysis (ecs object 4CTRLS vs 4 TREATED)
> gave me
> > > nice results when analysed with DEXSeq 1.6 on the complete
> design
> > > without splitting into two.
> > > Here's the picture with expression and splicing values:
> > > Immagine in linea 2
> > >
> > > Here's the design of the ecs object created with CTRL vs
> HYPOXIA
> > (only
> > > at 48h):
> > > > design(ecs.one)
> > > sampleName fileName condition
> > > N1 N1 Exon_Martelli_Sample_Martelli_N_1.bam
> CTRL
> > > N2 N2 Exon_Martelli_Sample_Martelli_N_2.bam
> CTRL
> > > CTRL2 CTRL2 Exon_Martelli_Sample_Martelli_CTRL_2.bam
> > CTRL
> > > CTRL3 CTRL3 Exon_Martelli_Sample_Martelli_CTRL_3.bam
> > CTRL
> > > HYPOXIA2 HYPOXIA2
> Exon_Martelli_Sample_Martelli_HYPOXIA_2.bam
> > HYPOXIA
> > > HYPOXIA3 HYPOXIA3
> Exon_Martelli_Sample_Martelli_HYPOXIA_3.bam
> > HYPOXIA
> > >
> > > Maybe the sampleNames?? N1andN2 come from another batch
> but it is
> > > still a CTRL. If they were different I would expect higher
> > dispersions
> > > and hence higher p.values not lower ones, wouldn't I?
> > > I have tried to trace the problem a bit with these gene:
> > >
> > > modelFrame<-constructModelFrame(ecs.one)
> > > formula0 = ~sample + exon
> > > formula1 = ~sample + exon + condition:exon
> > > mm0<-DEXSeq:::rmDepCols(model.matrix(formula0,modelFrame))
> > > mm1<-DEXSeq:::rmDepCols(model.matrix(formula1,modelFrame))
> > >
> >
> count<-DEXSeq:::getCountVector(ecs=ecs.one,geneID="ENSG00000170017","E029")
> > >
> > > > mm0
> > > (Intercept) sampleCTRL3 sampleHYPOXIA2 sampleHYPOXIA3
> sampleN1
> > > sampleN2 exonothers
> > > 1 1 0 0 0 1 0
> > > 0
> > > 2 1 0 0 0 0 1
> > > 0
> > > *3 1 0 0 0 0
> > > 0 0*
> > > 4 1 1 0 0 0 0
> > > 0
> > > 5 1 0 1 0 0 0
> > > 0
> > > 6 1 0 0 1 0 0
> > > 0
> > > 7 1 0 0 0 1 0
> > > 1
> > > 8 1 0 0 0 0 1
> > > 1
> > > 9 1 0 0 0 0 0
> > > 1
> > > 10 1 1 0 0 0 0
> > > 1
> > > 11 1 0 1 0 0 0
> > > 1
> > > 12 1 0 0 1 0 0
> > > 1
> > > attr(,"assign")
> > > [1] 0 1 1 1 1 1 2
> > > attr(,"contrasts")
> > > attr(,"contrasts")$sample
> > > [1] "contr.treatment"
> > >
> > > attr(,"contrasts")$exon
> > > [1] "contr.treatment"
> > >
> > > Does it seem OK to you? I guess the intercept is CTRL2 (in
> bold) but
> > > why? Does it have to do with the 'CTRL' string in the
> sampleName? I
> > > tried to change the sample names to CTRL1,CTRL2... but the
> > result was
> > > the same.
> > >
> > > Here's the mm1
> > > > mm1
> > > (Intercept) sampleCTRL3 sampleHYPOXIA2 sampleHYPOXIA3
> sampleN1
> > > sampleN2 exonothers exonthis:conditionHYPOXIA
> > > 1 1 0 0 0 1 0
> > > 0 0
> > > 2 1 0 0 0 0 1
> > > 0 0
> > > 3 1 0 0 0 0 0
> > > 0 0
> > > 4 1 1 0 0 0 0
> > > 0 0
> > > 5 1 0 1 0 0 0
> > > 0 1
> > > 6 1 0 0 1 0 0
> > > 0 1
> > > 7 1 0 0 0 1 0
> > > 1 0
> > > 8 1 0 0 0 0 1
> > > 1 0
> > > 9 1 0 0 0 0 0
> > > 1 0
> > > 10 1 1 0 0 0 0 1
> > > 0
> > > 11 1 0 1 0 0 0 1
> > > 0
> > > 12 1 0 0 1 0 0 1
> > > 0
> > > > sessionInfo()
> > > R Under development (unstable) (2014-02-09 r64949)
> > > Platform: x86_64-apple-darwin10.8.0 (64-bit)
> > >
> > > locale:
> > > [1]
> en_US.UTF-8/en_US.UTF-8/en_US.UTF-8/C/en_US.UTF-8/en_US.UTF-8
> > >
> > > attached base packages:
> > > [1] parallel stats graphics grDevices utils datasets
> methods
> > > base
> > >
> > > other attached packages:
> > > [1] edgeR_3.5.28 limma_3.19.28 DEXSeq_1.9.5
> > > Biobase_2.23.6 BiocGenerics_0.9.3 vimcom.plus_0.9-93
> setwidth_1.0-3
> > > colorout_1.0-2
> > >
> > > loaded via a namespace (and not attached):
> > > [1] AnnotationDbi_1.25.15 biomaRt_2.19.3 Biostrings_2.31.15
> > > bitops_1.0-6 DBI_0.2-7 GenomeInfoDb_0.99.19
> > > GenomicRanges_1.15.39
> > > [8] hwriter_1.3 IRanges_1.21.34 RCurl_1.95-4.1
> > > Rsamtools_1.15.33 RSQLite_0.11.4 statmod_1.4.18
> > stats4_3.1.0
> > > [15] stringr_0.6.2 tools_3.1.0 XML_3.98-1.1
> > > XVector_0.3.7 zlibbioc_1.9.0
> > >
> > >
> > > I hope you can give me some hints since I am a bit
> confused and
> > stuck
> > > with these results.
> > > By the way, for the other Bioc, I know limma/voom used on
> exons can
> > > also work nicely. Is there an easy way to implement a sort of
> > DEU test
> > > with limma voom counts? I guess the annotation gtf used to
> count
> > them
> > > should be used to construct models and include it in a
> similar way
> > > with formulae in linearmodels as DEXSeq does with glmnb.fit
> > function.
> > > It would be perfect to have it straight as a function also in
> > limma to
> > > compare results.
> > >
> > > Thanks again for your efforts,
> > >
> > > Looking forward to hearing to your comments.
> > > Jose
> > >
> > >
> > >
> > >
> > > 2014-03-20 16:07 GMT+01:00 Jose Garcia
> > > <garciamanteiga.josemanuel at hsr.it
> <mailto:garciamanteiga.josemanuel at hsr.it>
> > <mailto:garciamanteiga.josemanuel at hsr.it
> <mailto:garciamanteiga.josemanuel at hsr.it>>
> > > <mailto:garciamanteiga.josemanuel at hsr.it
> <mailto:garciamanteiga.josemanuel at hsr.it>
> > <mailto:garciamanteiga.josemanuel at hsr.it
> <mailto:garciamanteiga.josemanuel at hsr.it>>>>:
> > >
> > > Hi Alejandro,
> > > I solved the problem by re-creating the object ecs.24.
> I had
> > made
> > > one DEXSeq analysis up to the end by first creating an ecs
> > object.
> > > Then I just split the ecs object, which already had
> p.value and
> > > other info, and re-run the analysis from sizeFactors
> on onto the
> > > new split ecs.24 object.
> > > Now it has worked.
> > > However, I have obtained a much harder to interpret
> result which
> > > points to something wrong I do not know why. And it is
> > present in
> > > both the split and the original ecs.24 and ecs objects.
> > > From scratch:
> > > I made dexseq_prepare_annotation.py with the script
> from DEXSeq
> > > 1.6 which contained the '-r' parameter in order to avoid
> > counting
> > > exons overlapping different genes. Then I tried to count
> > using the
> > > new dexseq_count.py in the same package but it gave me
> an error
> > > because it had been introduced a check for NH tag in
> the bam
> > that
> > > I do not have because I use SOAPSplice. You suggested
> to use the
> > > old dexseq_count.py whithout the check (from DEXSeq 1.4).
> > > It worked and then I used the following script:
> > >
> > > sampleFiles.R_ExonOUT<-Files
> > > sampleName.R_ExonOUT<-Names
> > >
> >
> sampleCondition.R_ExonOUT<-c(rep("HYPOXIA",2),rep("CTRL",4),rep("HYPOXIA",2))
> > > sampleExperiment.R_ExonOUT<-c(rep("RUN_2",4),rep("RUN_1",4))
> > > sampleTable.R_ExonOUT <- data.frame(sampleName =
> > sampleName.R_ExonOUT,
> > > fileName =
> sampleFiles.R_ExonOUT,
> > > condition =
> > sampleCondition.R_ExonOUT,
> > > experiment =
> > sampleExperiment.R_ExonOUT)
> > > inDir = getwd()
> > > annotationfile = file.path
> > >
> >
> ("/lustre1/genomes/hg19/annotation","Homo_sapiens.ensembl72.DEXSeq.gff")
> > >
> > > ecs = read.HTSeqCounts(countfiles = file.path(inDir,
> > > sampleTable.R_ExonOUT$fileName),design =
> sampleTable.R_ExonOUT,
> > > flattenedfile = annotationfile)
> > >
> > > sampleNames(ecs) = sampleTable.R_ExonOUT$sampleName
> > > ecs <- estimateSizeFactors(ecs)
> > > library(parallel)
> > > ecs <- estimateDispersions(ecs,nCores=8)
> > > ecs <- fitDispersionFunction(ecs)
> > > ecs <- testForDEU(ecs, nCores=8)
> > > ecs <- estimatelog2FoldChanges(ecs, nCores=8)
> > > res<- DEUresultTable(ecs)
> > >
> > > The problem is that I have some exons with a ridiculous
> > log2FC but
> > > with a very good p.adjust.
> > > Same thing with the ecs.24 or ecs.48 split objects.
> Here an
> > example:
> > >
> > > head(res.48[which(res.48$geneID=="ENSG00000148516"),])
> > >
> > > geneID exonID dispersion pvalue padjust meanBase
> > > log2fold(HYPOXIA/CTRL)
> > >
> > > ENSG00000148516:E036 ENSG00000148516 E036 0.014798679
> > > 2.873434e-16 5.646223e-14 171.5313 -6.075811e-01
> > >
> > > ENSG00000148516:E049 ENSG00000148516 E049 0.011425856
> > > 2.461690e-14 2.846653e-12 414.4351 -1.907197e-01
> > >
> > > ENSG00000148516:E039 ENSG00000148516 E039 0.014486497
> > > 2.332678e-13 2.043916e-11 181.3705 -4.226252e-01
> > >
> > > *ENSG00000148516:E050 ENSG00000148516 E050 0.009733072
> > > 1.131825e-12 8.326638e-11 1432.6492 -1.278668e-05*
> > >
> > > ENSG00000148516:E033 ENSG00000148516 E033 0.037143254
> > > 3.483915e-12 2.236853e-10 514.5010 -5.273017e-01
> > >
> > > ENSG00000148516:E034 ENSG00000148516 E034 0.019826955
> > > 4.660942e-12 2.896722e-10 113.6851 -6.541261e-01
> > >
> > >
> > > If you look at the plot (just a few exons around E50)
> > >
> > > plotDEXSeq(ecs.48,"ENSG00000148516",splicing=T)
> > >
> > >
> > > Immagine in linea 3
> > >
> > > It seems clear that all those p-values cannot come
> from those
> > > log2FC that are adjusted for expression of all exons
> coming from
> > > the same gene.
> > >
> > > I have checked the design and formula:
> > >
> > > design(ecs.48)
> > >
> > > sampleName fileName condition experiment
> > >
> > > N1 N1 Exon_Martelli_Sample_Martelli_N_1.bam
> CTRL RUN_2
> > >
> > > N2 N2 Exon_Martelli_Sample_Martelli_N_2.bam
> CTRL RUN_2
> > >
> > > CTRL2 CTRL2 Exon_Martelli_Sample_Martelli_CTRL_2.bam
> CTRL
> > RUN_1
> > >
> > > CTRL3 CTRL3 Exon_Martelli_Sample_Martelli_CTRL_3.bam
> CTRL
> > RUN_1
> > >
> > > HYPOXIA2 HYPOXIA2
> Exon_Martelli_Sample_Martelli_HYPOXIA_2.bam
> > > HYPOXIA RUN_1
> > >
> > > HYPOXIA3 HYPOXIA3
> Exon_Martelli_Sample_Martelli_HYPOXIA_3.bam
> > > HYPOXIA RUN_1
> > >
> > >
> > > formula(ecs.48)
> > >
> > > $formulaDispersion
> > >
> > > [1] "~sample + exon + condition:exon"
> > >
> > >
> > > $formula0
> > >
> > > [1] "~sample + exon"
> > >
> > >
> > > $formula1
> > >
> > > [1] "~sample + exon + condition:exon"
> > >
> > >
> > > So, I am a bit stuck with it. I guess everything comes
> from
> > having
> > > used different versions but I cannot come across it.
> > Summarizing:
> > >
> > > SOASPSplice
> > >
> > > dexseq_prepare_annotation.py (From DEXSeq 1.6) with
> Ensembl72
> > > (hg19) -r no
> > >
> > > dexseq_count.py (From DEXSeq 1.4)
> > >
> > > Analysis (DEXSeq 1.8)
> > >
> > > Thanks for the help,
> > >
> > >
> > > Jose
> > >
> > >
> > >
> > > sessionInfo()
> > >
> > > R version 3.0.1 (2013-05-16)
> > >
> > > Platform: x86_64-unknown-linux-gnu (64-bit)
> > >
> > >
> > > locale:
> > >
> > > [1] LC_CTYPE=en_US LC_NUMERIC=C LC_TIME=en_US
> > >
> > > [4] LC_COLLATE=en_US LC_MONETARY=en_US LC_MESSAGES=en_US
> > >
> > > [7] LC_PAPER=C LC_NAME=C LC_ADDRESS=C
> > >
> > > [10] LC_TELEPHONE=C LC_MEASUREMENT=en_US
> LC_IDENTIFICATION=C
> > >
> > >
> > > attached base packages:
> > >
> > > [1] parallel stats graphics grDevices utils datasets
> > methods
> > >
> > > [8] base
> > >
> > >
> > > other attached packages:
> > >
> > > [1] DEXSeq_1.8.0 Biobase_2.22.0 BiocGenerics_0.8.0
> > >
> > >
> > > loaded via a namespace (and not attached):
> > >
> > > [1] biomaRt_2.18.0 Biostrings_2.30.1 bitops_1.0-6
> > >
> > > [4] GenomicRanges_1.14.3 hwriter_1.3 IRanges_1.20.6
> > >
> > > [7] RCurl_1.95-4.1 Rsamtools_1.14.2 statmod_1.4.18
> > >
> > > [10] stats4_3.0.1 stringr_0.6.2 tools_3.0.1
> > >
> > > [13] XML_3.98-1.1 XVector_0.2.0 zlibbioc_1.8.0
> > >
> > >
> > >
> > > 2014-03-19 13:18 GMT+01:00 Jose Garcia
> > > <garciamanteiga.josemanuel at hsr.it
> <mailto:garciamanteiga.josemanuel at hsr.it>
> > <mailto:garciamanteiga.josemanuel at hsr.it
> <mailto:garciamanteiga.josemanuel at hsr.it>>
> > > <mailto:garciamanteiga.josemanuel at hsr.it
> <mailto:garciamanteiga.josemanuel at hsr.it>
> > <mailto:garciamanteiga.josemanuel at hsr.it
> <mailto:garciamanteiga.josemanuel at hsr.it>>>>:
> > >
> > > Hi Alejandro,
> > > I am analyzing with DEXSeq my data. 4 CTRLs and 2
> Treated
> > > samples. My design is the following:
> > >
> > > design(ecs.24)
> > >
> > > sampleName fileName condition experiment
> > >
> > > H1 H1 Exon_Martelli_Sample_Martelli_H_1.bam
> > > HYPOXIA RUN_2
> > >
> > > H2 H2 Exon_Martelli_Sample_Martelli_H_2.bam
> > > HYPOXIA RUN_2
> > >
> > > N1 N1 Exon_Martelli_Sample_Martelli_N_1.bam
> > CTRL
> > > RUN_2
> > >
> > > N2 N2 Exon_Martelli_Sample_Martelli_N_2.bam
> > CTRL
> > > RUN_2
> > >
> > > CTRL2 CTRL2
> Exon_Martelli_Sample_Martelli_CTRL_2.bam
> > > CTRL RUN_1
> > >
> > > CTRL3 CTRL3
> Exon_Martelli_Sample_Martelli_CTRL_3.bam
> > > CTRL RUN_1
> > >
> > > When I follow the vignette:
> > >
> > > ecs.24 <- estimateDispersions(ecs.24,nCores=8)
> > >
> > > ....Done
> > >
> > > ecs.24 <- fitDispersionFunction(ecs.24)
> > >
> > > ....Done
> > >
> > > ecs.24 <- testForDEU(ecs.24, nCores=8)
> > >
> > > .....
> > >
> > > ecs.24 <- estimatelog2FoldChanges(ecs.24, nCores=8)
> > >
> > > *Error in `row.names<-.data.frame`(`*tmp*`, value =
> > > c("geneID", "exonID", : *
> > >
> > > * duplicate 'row.names' are not allowed*
> > >
> > > *Calls: estimatelog2FoldChanges ... pData<- ->
> pData<- ->
> > > row.names<- -> row.names<-.data.frame*
> > >
> > > *In addition: Warning message:*
> > >
> > > *non-unique value when setting 'row.names':
> > > 'log2fold(CTRL/HYPOXIA)' *
> > >
> > >
> > > I checked for duplication as you had suggested
> elsewhere
> > >
> > > any(duplicated(featureNames(ecs.24)))
> > >
> > > [1] FALSE
> > >
> > >
> any(duplicated(paste(geneIDs(ecs.24),exonIDs(ecs.24),sep=":")))
> > >
> > > [1] FALSE
> > >
> > >
> > > I also checked that the condition in design where
> factors:
> > >
> > >
> > > is.factor(pData(ecs.24)$condition)
> > >
> > > [1] TRUE
> > >
> > >
> > > The only explanation I could come to is the fact
> that I have
> > > an even number of samples for control and treated?
> or that I
> > > have the 'experiment' column in the design, but it
> would be
> > > irrelevant since the default formula is only taking
> > condition
> > > into consideration, isn't it?
> > >
> > > What could be the origin of the error?
> > >
> > > Thanks again!
> > >
> > > Jose
> > >
> > >
> > >
> > > > sessionInfo()
> > >
> > > R version 3.0.1 (2013-05-16)
> > >
> > > Platform: x86_64-unknown-linux-gnu (64-bit)
> > >
> > >
> > > locale:
> > >
> > > [1] LC_CTYPE=en_US LC_NUMERIC=C LC_TIME=en_US
> > >
> > > [4] LC_COLLATE=en_US LC_MONETARY=en_US
> LC_MESSAGES=en_US
> > >
> > > [7] LC_PAPER=C LC_NAME=C LC_ADDRESS=C
> > >
> > > [10] LC_TELEPHONE=C LC_MEASUREMENT=en_US
> LC_IDENTIFICATION=C
> > >
> > >
> > > attached base packages:
> > >
> > > [1] parallel stats graphics grDevices utils
> > datasets
> > > methods
> > >
> > > [8] base
> > >
> > >
> > > other attached packages:
> > >
> > > [1] DEXSeq_1.8.0 Biobase_2.22.0 BiocGenerics_0.8.0
> > >
> > >
> > > loaded via a namespace (and not attached):
> > >
> > > [1] biomaRt_2.18.0 Biostrings_2.30.1 bitops_1.0-6
> > >
> > > [4] GenomicRanges_1.14.3 hwriter_1.3 IRanges_1.20.6
> > >
> > > [7] RCurl_1.95-4.1 Rsamtools_1.14.2 statmod_1.4.18
> > >
> > > [10] stats4_3.0.1 stringr_0.6.2 tools_3.0.1
> > >
> > > [13] XML_3.98-1.1 XVector_0.2.0 zlibbioc_1.8.0
> > >
> > >
> > >
> > > 2014-03-13 16:32 GMT+01:00 Alejandro Reyes
> > > <alejandro.reyes at embl.de
> <mailto:alejandro.reyes at embl.de>
> > <mailto:alejandro.reyes at embl.de
> <mailto:alejandro.reyes at embl.de>> <mailto:alejandro.reyes at embl.de
> <mailto:alejandro.reyes at embl.de>
> > <mailto:alejandro.reyes at embl.de
> <mailto:alejandro.reyes at embl.de>>>>:
> > >
> > > Dear Xiayu Rao,
> > >
> > > Thanks for your interest in DEXSeq.
> > > That looks strange, does it happen when you
> use files
> > > different from the
> > > one you generated by your own? Could you maybe
> send me
> > > (offline) your
> > > gtf file and the first 1000 lines of one of
> your sam
> > files?
> > >
> > > Bests,
> > > Alejandro
> > >
> > > > Hello,
> > > >
> > > > DEXSeq is a great tool. Thank you for that.
> I recently
> > > generate my own gtf file with the same format
> as the
> > > exon.gff generated by
> dexseq_prepare_annotation.py.
> > > However, the output is strange. I tried to
> find the
> > reason
> > > with no success. Could you please provide any
> idea about
> > > that problem? Thank you very much in advance!
> > > >
> > > > Note: I used the latest dexseq, and the sam
> files had
> > > been sorted.
> > > >
> > > > 1 genes.gtf exonic_part 12228
> 12594 .
> > > + . exonic_part_number "001"; gene_id
> > > "ENSG00000223972"
> > > > 1 genes.gtf exonic_part 12722
> 12974 .
> > > + . exonic_part_number "002"; gene_id
> > > "ENSG00000223972"
> > > > 1 genes.gtf exonic_part 13053
> 13220 .
> > > + . exonic_part_number "003"; gene_id
> > > "ENSG00000223972"
> > > > 1 genes.gtf exonic_part 14830
> 14969 .
> > > - . exonic_part_number "001"; gene_id
> > > "ENSG00000223972+ENSG00000227232"
> > > > .............
> > > >
> > > >
> > > > ==> SRR791043_counts.txt <==
> > > > :001G00027000003"
> > > > :002G00021000003"
> > > > :003G00070000003"
> > > > :004G00040000003"
> > > > :005G00060000003"
> > > > :006G00030000003"
> > > > :007G00019000003"
> > > > :008G00045600003"
> > > > :009G00020400003"
> > > > :001G00000000005"
> > > >
> > > >
> > > > Thanks,
> > > > Xiayu
> > >
> > > _______________________________________________
> > > Bioconductor mailing list
> > > Bioconductor at r-project.org
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> <mailto:Bioconductor at r-project.org
> <mailto:Bioconductor at r-project.org>>
> > <mailto:Bioconductor at r-project.org
> <mailto:Bioconductor at r-project.org>
> > <mailto:Bioconductor at r-project.org
> <mailto:Bioconductor at r-project.org>>>
> > > https://stat.ethz.ch/mailman/listinfo/bioconductor
> > > Search the archives:
> > >
> http://news.gmane.org/gmane.science.biology.informatics.conductor
> > >
> > >
> > >
> > >
> > > --
> > > Jose M. Garcia Manteiga PhD
> > > Research Assistant - Data Analysis in Functional
> Genomics
> > > Center for Translational Genomics and BioInformatics
> > > Dibit2-Basilica, 3A3
> > > San Raffaele Scientific Institute
> > > Via Olgettina 58, 20132 Milano (MI), Italy
> > >
> > > Tel: +39-02-2643-4751 <tel:%2B39-02-2643-4751>
> <tel:%2B39-02-2643-4751>
> > > e-mail: garciamanteiga.josemanuel at hsr.it
> <mailto:garciamanteiga.josemanuel at hsr.it>
> > <mailto:garciamanteiga.josemanuel at hsr.it
> <mailto:garciamanteiga.josemanuel at hsr.it>>
> > > <mailto:garciamanteiga.josemanuel at hsr.it
> <mailto:garciamanteiga.josemanuel at hsr.it>
> > <mailto:garciamanteiga.josemanuel at hsr.it
> <mailto:garciamanteiga.josemanuel at hsr.it>>>
> > >
> > >
> > >
> > >
> > > --
> > > Jose M. Garcia Manteiga PhD
> > > Research Assistant - Data Analysis in Functional Genomics
> > > Center for Translational Genomics and BioInformatics
> > > Dibit2-Basilica, 3A3
> > > San Raffaele Scientific Institute
> > > Via Olgettina 58, 20132 Milano (MI), Italy
> > >
> > > Tel: +39-02-2643-4751 <tel:%2B39-02-2643-4751>
> <tel:%2B39-02-2643-4751>
> > > e-mail: garciamanteiga.josemanuel at hsr.it
> <mailto:garciamanteiga.josemanuel at hsr.it>
> > <mailto:garciamanteiga.josemanuel at hsr.it
> <mailto:garciamanteiga.josemanuel at hsr.it>>
> > > <mailto:garciamanteiga.josemanuel at hsr.it
> <mailto:garciamanteiga.josemanuel at hsr.it>
> > <mailto:garciamanteiga.josemanuel at hsr.it
> <mailto:garciamanteiga.josemanuel at hsr.it>>>
> > >
> > >
> > >
> > >
> > > --
> > > Jose M. Garcia Manteiga PhD
> > > Research Assistant - Data Analysis in Functional Genomics
> > > Center for Translational Genomics and BioInformatics
> > > Dibit2-Basilica, 3A3
> > > San Raffaele Scientific Institute
> > > Via Olgettina 58, 20132 Milano (MI), Italy
> > >
> > > Tel: +39-02-2643-4751 <tel:%2B39-02-2643-4751>
> <tel:%2B39-02-2643-4751>
> > > e-mail: garciamanteiga.josemanuel at hsr.it
> <mailto:garciamanteiga.josemanuel at hsr.it>
> > <mailto:garciamanteiga.josemanuel at hsr.it
> <mailto:garciamanteiga.josemanuel at hsr.it>>
> > > <mailto:garciamanteiga.josemanuel at hsr.it
> <mailto:garciamanteiga.josemanuel at hsr.it>
> > <mailto:garciamanteiga.josemanuel at hsr.it
> <mailto:garciamanteiga.josemanuel at hsr.it>>>
> >
> >
> >
> >
> > --
> > Jose M. Garcia Manteiga PhD
> > Research Assistant - Data Analysis in Functional Genomics
> > Center for Translational Genomics and BioInformatics
> > Dibit2-Basilica, 3A3
> > San Raffaele Scientific Institute
> > Via Olgettina 58, 20132 Milano (MI), Italy
> >
> > Tel: +39-02-2643-4751 <tel:%2B39-02-2643-4751>
> > e-mail: garciamanteiga.josemanuel at hsr.it
> <mailto:garciamanteiga.josemanuel at hsr.it>
> > <mailto:garciamanteiga.josemanuel at hsr.it
> <mailto:garciamanteiga.josemanuel at hsr.it>>
>
>
>
>
> --
> Jose M. Garcia Manteiga PhD
> Research Assistant - Data Analysis in Functional Genomics
> Center for Translational Genomics and BioInformatics
> Dibit2-Basilica, 3A3
> San Raffaele Scientific Institute
> Via Olgettina 58, 20132 Milano (MI), Italy
>
> Tel: +39-02-2643-4751
> e-mail: garciamanteiga.josemanuel at hsr.it
> <mailto:garciamanteiga.josemanuel at hsr.it>
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