The MergeInsertSizeDistributions utility combines multiple insert size histogram files into one.
The insert size histograms are stored in a binary file format.
-I <histogram-file> : The set of input histogram files.
-disjoint : If specified, assume the input files contain disjoint data, which is faster. If not specified, histograms with the same <Sample, Library, ReadGroup> key are merged.
-O <histogram-file> : Output binary histogram file.