use the dimension's numerical offset as the default instead of 0.0
use the dimension's numerical offset as the default instead of 0.0

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