Indexed VCF - automatic depth track updates

This example illustrates use of a custom FeatureSource class to calculate binned coverage depth from the "DP" info tag of a VCF track.

• The coverage track calculation perfomed automatically as needed in the getFeatures function of the data source.
• Bin size is set automatically to ~ 100 bins over the genomic range in view.
• Only the region in view is calculated.
• Source code