These functions support the import and export of the UCSC BigWig format, a compressed, binary form of WIG/BEDGraph with a spatial index and precomputed summaries. These functions do not work on Windows.
A BigWigSelection represents a query against a BigWig file, see import.bw. It is simply a RangedSelection that requires its colnames parameter to be "score", if non-empty, as that is the only column supported by BigWig.
A formal list of BrowserView objects. Extends and inherits all its methods from Vector. Usually generated by passing multiple ranges to the browserView function.
A Chain object represents a UCSC chain alignment, typically imported from a chain file, and is essentially a list of ChainBlock objects. Each ChainBlock has a corresponding chromosome (its name in the list) and is a run-length encoded alignment, mapping a set of intervals on that chromosome to intervals on the same or other chromosomes.