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No coverage at zero point #80

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AlistairNWard opened this issue Jan 24, 2018 · 3 comments
Open

No coverage at zero point #80

AlistairNWard opened this issue Jan 24, 2018 · 3 comments
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@AlistairNWard
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Choose chr1 and select a portion of data spanning the centromere. There should be a bunch of data at zero coverage, but there is not.
@AlistairNWard
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screen shot 2018-03-15 at 3 40 56 pm

@mjbowler
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It will show zero coverage if you span the whole region. It also sometimes does if you select the latter half of the centromere. I'm trying to figure out why it never does if you span the first part...
zero_coverage.png

@AlistairNWard
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This one is actually pretty weird. I keep selecting different regions entirely within the centromere, spanning one side of it, or spanning the whole thing. Sometimes I see a peak at 0, sometimes I don't. If I'm entirely within the centromere, all coverage is at 0X, but sometimes I see the same result even when I have selected a region that clearly contains coverage.

I'm guessing that this is purely a result of how much data is being sampled?

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@AlistairNWard @mjbowler