User: Mr.RB

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Mr.RB20
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Posts by Mr.RB

<prev • 17 results • page 1 of 2 • next >
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Finding longest non overlapping open reading frames
... I found `predORF` from `systemPipeR` to predict the longest non-overlapping reading frames in a genome, however these are the longest ORFs **per** strand. I want to have the longest ORF considering both strands, for example: AAAA**ATG**XXXXXX**TGA**AAAA CDS = XXXXXX = 6 nt <- pick this ...
systempiper prediction orf predorf written 8 weeks ago by Mr.RB20
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Comment: C: DESseq2: Why can the dispersion be generelized over the conditions?
... Aaah I see. Although I don't get the statistics after the dispersion estimates (currently looking at the paper) I could imagine that the model would be like y = b0 + condition2 *b1, where b0 = mean(condition1) and b1 indicates the increase in mean for condition2.  And then test with H0: b1 == 0. How ...
written 11 months ago by Mr.RB20
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DESseq2: Why can the dispersion be generelized over the conditions?
... When calculating the dispersion DESeq2 will only give one dispersion value for each gene, as can also be seen in the dispersion plot. I don't have much knowledge about statistics, but as far as I know we basically want to compare a distribution from condition 1 vs condition 2 and see whether there i ...
deseq2 estimatedispersions dispersion written 11 months ago by Mr.RB20 • updated 11 months ago by Ryan C. Thompson7.3k
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Comment: C: EdgeR: Explaning dispersion types to newbies
... That's why i said " the model would look like this I suppose") , but apparently I was wrong here, but then the plot I mentioned (coefficient 1 vs coefficient) does makes sense. Anyway I will re-read it ...
written 11 months ago by Mr.RB20
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Comment: C: EdgeR: Explaning dispersion types to newbies
... hmm I just checked it: edgeR.fit <- edgeR::glmFit(edgeR.dgelist , design) edgeR.glrt <- edgeR::glmLRT(edgeR.fit, contrast = mc) head(edgeR.fit$coefficients,2) # groupcon grouptreat #gene1 -7.057066 -7.104031 #gene2 -6.580015 -6.706760 head(edgeR.glrt$table,2) # logFC logCP ...
written 11 months ago by Mr.RB20
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Comment: C: EdgeR: Explaning dispersion types to newbies
... Aaah that's clear! Got all the steps now. Thankyou for the great and quick support for the questions! ...
written 11 months ago by Mr.RB20
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Comment: C: EdgeR: Explaning dispersion types to newbies
... Sorry for bothering you again! But I can't figure what these coefficients mean. Let's say we compare two treatments, this will result in two coefficients: the first one is the baseline for group1 and the second the 2 vs 1 comparison (according to the user guide). Indeed when I plot coefficient 1 aga ...
written 11 months ago by Mr.RB20
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Comment: C: EdgeR: Explaning dispersion types to newbies
... Sorry if I wasn't clear I actually ment whether I could produce a plot like the last figure on this page. Let's say I done my tag wise dispersion estimates based on the whole data, then select a single gene and its counts and dispersion. Like so: dat <- read.table(text ="con.1 con.2 treat.1 tre ...
written 12 months ago by Mr.RB20
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Comment: C: EdgeR: Explaning dispersion types to newbies
... Do you have any suggestions to show what a GLMfit actually does, or to explain this simply. I think the testing of coefficients would be easy understandable, but I completely forgot the fitting part... I know about the gof() plot but I think this will more focus on the results than what it actually ...
written 12 months ago by Mr.RB20
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Comment: C: EdgeR: Explaning dispersion types to newbies
... Thankyou! the prior.df=0 to prior.df = x should really visually clarify the compromis! ...
written 12 months ago by Mr.RB20

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