Hi Gordon and Bioconductor patrons,

I have 6 experimental groups with 3 biological replicates each and I used
the function
estimateGLMTagwiseDisp to look at dispersion estimates for my data. When I
plotted
tags vs abundance, I see a strange shape (data artifact ). Would you please
help me
understand what property of the data can cause this?

> plot(y$abundance,y$tagwise.dispersion)

https://docs.google.com/file/d/0B_mk9qnFziV-ZFBhak5fUGZSZ09VV0dJQ21Id1hYQQ/edit

Thanks,
Al

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