How to calculate AUC in coverage graph Is there a way to calculate the area under a curve in a coverage graph?

Thank you in advance.

EDIT:

I'd like to calculate the AUC per strand per gene in a coverage graph. I have two wig files (sense and antisense) generated from a single bam (RNA-seq) file (using the strand-coverage software).
Yes, just add up the coverage at each location; that's integration in a nutshell.

Or, alternatively / equivalently, count the total number of reads within the region.