TDFDataSource scoreSource;
public EWigTrack(ResourceLocator locator, Genome genome) {
super(locator);
TDFReader reader = TDFReader.getReader(locator.getPath());
scoreSource = new TDFDataSource(reader, 4, "Pi", genome);
setDataRange(new DataRange(0, 0, 10));
baseSources = new HashMap();
for (int i = 0; i < 4; i++) {