if region or global data stats have same min and max, set one of them to zero for better displayability
if region or global data stats have same min and max, set one of them to zero for better displayability

GMOD/jbrowse,SuLab/jbrowse,SuLab/jbrowse,GMOD/jbrowse,SuLab/jbrowse,limeng12/jbrowse,Arabidopsis-Information-Portal/jbrowse,igemsoftware/Shenzhen_BGIC_0101_2013,erasche/jbrowse,erasche/jbrowse,erasche/jbrowse,Arabidopsis-Information-Portal/jbrowse,limeng12/jbrowse,igemsoftware/Shenzhen_BGIC_0101_2013,igemsoftware/Shenzhen_BGIC_0101_2013,SuLab/jbrowse,SuLab/jbrowse,igemsoftware/Shenzhen_BGIC_0101_2013,SuLab/jbrowse,GMOD/jbrowse,nathandunn/jbrowse,GMOD/jbrowse,Arabidopsis-Information-Portal/jbrowse,limeng12/jbrowse,Arabidopsis-Information-Portal/jbrowse,limeng12/jbrowse,erasche/jbrowse,erasche/jbrowse,nathandunn/jbrowse,Arabidopsis-Information-Portal/jbrowse,igemsoftware/Shenzhen_BGIC_0101_2013,limeng12/jbrowse,erasche/jbrowse,igemsoftware/Shenzhen_BGIC_0101_2013,igemsoftware/Shenzhen_BGIC_0101_2013,erasche/jbrowse,nathandunn/jbrowse,GMOD/jbrowse,igemsoftware/Shenzhen_BGIC_0101_2013,limeng12/jbrowse,limeng12/jbrowse,Arabidopsis-Information-Portal/jbrowse,SuLab/jbrowse,limeng12/jbrowse,nathandunn/jbrowse,Arabidopsis-Information-Portal/jbrowse,nathandunn/jbrowse,erasche/jbrowse