[ncl-talk] Problem reading hdf5 file

[Charles Bardeen]

I am trying to read hdf5 data produced from the Madrigal archive ( http://cedar.openmadrigal.org ). The file format contains groups and compounds. I seem to be able to access the group, but have been unable to access the data that I want from the compound. Can you tell how to make this work? The file format and the commands I have tried are shown below.

Thanks,

Chuck

--------------------------------------------------------------
Charles Bardeen
National Center for Atmospheric Research
P.O. Box 3000, Boulder, CO 80307-3000
Phone: (303) 497-1752,  Fax: (303) 497-1400
bardeenc at ucar.edu


 Copyright (C) 1995-2015 - All Rights Reserved
 University Corporation for Atmospheric Research
 NCAR Command Language Version 6.3.0
 The use of this software is governed by a License Agreement.
 See http://www.ncl.ucar.edu/ for more details.
ncl 0> x = addfile("gps031001g.002.hdf5", "r")
ncl 1> print(x)

Variable: x
Type: file
filename:       gps031001g.002
path:   gps031001g.002.hdf5
   file global attributes:
   dimensions:
      DIM_000 = 10
      DIM_001 = 0
      DIM_002 = 0
      DIM_003 = 0
   variables:
      group </Data>


      compound <Table_Layout>   (year, month, day, hour, min, sec, ut1_unix, ut2_unix, recno, gdlat, glon, tec, dtec) (DIM_000)

      group </Metadata>


      compound <Data_Parameters>        (mnemonic, description, isError, units, category) (DIM_000)

      compound <Experiment_Notes>       (File Notes) (DIM_000)

      compound <Experiment_Parameters>  (name, value) (DIM_000)

ncl 5> g = x=>Data
ncl 6> print(g)

Variable: g
Type: file
filename:       gps031001g.002
path:   gps031001g.002.hdf5
   file global attributes:
   dimensions:
      DIM_000 = 10
      DIM_001 = 0
      DIM_002 = 0
      DIM_003 = 0
   variables:
      compound <Table_Layout>   (year, month, day, hour, min, sec, ut1_unix, ut2_unix, recno, gdlat, glon, tec, dtec) (DIM_000)

ncl 7> tec = g->/Table_Layout.tec
fatal:["Execute.c":6332]:variable (/Table_Layout.tec) is not in file (g)
fatal:["Execute.c":8573]:Execute: Error occurred at or near line 7

ncl 9> tec = x->/Data/Table_Layout.tec
fatal:["Execute.c":6332]:variable (/Data/Table_Layout.tec) is not in file (x)
fatal:["Execute.c":8573]:Execute: Error occurred at or near line 9



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