EdgeR Alternative Splicing

Question

[wei.zhang]

Hi all,

I am using edgeR for the alternative splicing analysis. On the user guide, it says "We plot all the exons for the top two most differentially spliced genes. Exons that are individually significant are highlighted." Dose anyone know

1. how EdgeR define an exon is individually significant?
2. how can we get those logFC data?
3. on the plot (below, from the EdgeR user guide): logFC (this exon vs the average), what's "the average" referring to? Is it the untreated control?

Thanks a lot!