Edge-linked interval to data view. Edge-linked interval to data view forthe expression of the exons of gene PDIA6. The top track shows theexpression level for each of the exons, and the color indicates the sample(GM12878 or K562). The second track shows the links between the even-spacedexpression track and the exons track, below. The package DEXseq, which producesa similar graphic, computes differential expression and significance, andsignificance is indicated by coloring the connecting lines red. The track atthe bottom shows the annotated transcripts.