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Using the LDM pattern action HDS ^(ZETA98) (KTUA|PACR|KSTR|KRSA|KORN|KRHA|KKRF|KMSR|KTAR|KPTR|KTIR|KALR|KFWR) (..)(..)(..)[^!]*!(grib|grib2)/[^/]*/([^/]*)/#([^/]*)/([0-9]{8})([0-9]{4})/(F[0-9]{3})/([^/]*) FILE -edex -log /awips2/data_store/grid/ZETA98-GRID\8/ZETA98-GRID\8_\(10)Z_\(11)_\(12)-\1_\2_\3\4\5-(seq).grib we have a file `ZETA98-GRID255_1200Z_F012_APCP-ZETA98_KPTR_081505-401104871.grib`: wgrib ZETA98-GRID255_1200Z_F012_APCP-ZETA98_KPTR_081505-401104871.grib -V rec 1:32:date 2016030712 APCP kpds5=61 kpds6=1 kpds7=0 levels=(0,0) grid=255 sfc 6-12hr acc: APCP=Total precipitation [kg/m^2] timerange 4 P1 6 P2 12 TimeU 1 nx 302 ny 357 GDS grid 5 num_in_ave 0 missing 0 center 9 subcenter 159 process 172 Table 2 scan: WE:SN winds(grid) polar stereo: Lat1 38.412000 Long1 -123.059000 Orient -105.000000 north pole (302 x 357) Dx 4763 Dy 4763 scan 64 mode 8 min/max data 0 27.432 num bits 16 BDS_Ref 0 DecScale 3 BinScale -1 Important information to note are the Center ID, Subcenter ID, and Process ID. Grid projection information is also useful if you have to go into **psql** and look for it's entry in the `gridgeometry` table. center **9** subcenter **159** process **172** Grib decoder definition files in `/awips2/edex/data/utility/edex_static/base/grib/models/` are named by Center ID: ls /awips2/edex/data/utility/edex_static/base/grib/models/ gribModels_ECMWF-98.xml GribModels_FNMO-58.xml gribModels_HFR-9.xml gribModels_NOAA-161.xml gribModels_RFC-9.xml gribModels_UKMET-74.xml NCEP gribModels_FNMO-58.xml gribModels_FSL-59.xml gribModels_NCEP-7.xml gribModels_NWSTG-8.xml gribModels_RSMC-54.xml LDAD.xml RTOFS.xml So look in **/awips2/edex/data/utility/edex_static/base/grib/models/gribModels_RFC-9.xml** for Center ID 9. This XML file is a series of `` entries: The entry we want is for center **9** subcenter **159** process **172**: QPE-RFC-PTR 9 159 250159 172 The grid definition name, QPE-RFC-PTR, should be a directory in `/awips2/edex/data/hdf5/grid/`: ls -al /awips2/edex/data/hdf5/grid/ | grep QPE-RFC-PTR drwxr-xr-x 3 awips fxalpha 4096 Mar 8 08:07 QPE-RFC-PTR