method to return chipper threshold
method to return chipper threshold

DougFirErickson/PDAL,Sciumo/PDAL,jwomeara/PDAL,verma/PDAL,boundlessgeo/PDAL,jwomeara/PDAL,jwomeara/PDAL,radiantbluetechnologies/PDAL,boundlessgeo/PDAL,DougFirErickson/PDAL,mpgerlek/PDAL-old,boundlessgeo/PDAL,lucadelu/PDAL,Sciumo/PDAL,jwomeara/PDAL,verma/PDAL,verma/PDAL,radiantbluetechnologies/PDAL,lucadelu/PDAL,mtCarto/PDAL,verma/PDAL,verma/PDAL,Sciumo/PDAL,radiantbluetechnologies/PDAL,boundlessgeo/PDAL,mpgerlek/PDAL-old,mtCarto/PDAL,Sciumo/PDAL,mpgerlek/PDAL-old,DougFirErickson/PDAL,lucadelu/PDAL,verma/PDAL,mtCarto/PDAL,lucadelu/PDAL,radiantbluetechnologies/PDAL,verma/PDAL,mtCarto/PDAL,DougFirErickson/PDAL,mpgerlek/PDAL-old