HDF files
Don Hooper
hoop at COLORADO.EDU
Thu Feb 3 15:41:46 EST 2005
Andreea Ira,
What is the new error message? The error messages are critical
to debugging any problem.
-Hoop
> From owner-gradsusr at LIST.CINECA.IT Thu Feb 3 12:49:31 2005
> From: Andreea Ira <andreea_ira at YAHOO.COM>
>
> Thank you for answering.
> It doesn't seems to work, even if i have deleted the
> ZDEF line. I have no idea what might be wrong but do you think that
> GrADS can have a problem...maybe i need an upgrade for a new version?
> Thank you,
>
> Andreea
>
> --- Don Hooper <hoop at COLORADO.EDU> wrote:
>
> > Andreea Ira,
> >
> > Just lose the ZDEF line from the DDF. If you use
> > one, it must name a
> > dimension. I don't see any dimension in your data
> > file that qualifies, so
> > just don't use one. All lines in the XDFopen-style
> > DDFs are optional
> > except for DSET.
> >
> > -Hoop
> > > From owner-gradsusr at LIST.CINECA.IT Wed Feb 2
> > 12:54:34 2005
> > > From: Andreea Ira <andreea_ira at YAHOO.COM>
> > >
> > > Dear all,
> > >
> > > I am having some troubles in completing the task
> > of
> > > reading and displaying data in hdf format using
> > GrADS
> > > and I would appreciate your assistance.
> > >
> > > Since according to the directions to read and
> > display
> > > the data in question, I need to create a .ddf
> > file, I
> > > did so using the information that I can obtain
> > from a
> > > dump (created using hdf binaries and following the
> > > from the README file).
> > >
> > > 1. I include here the contents of the dump file:
> > >
> > > dimensions:
> > > 2_5_deg__regional_colat__zones = 72 ;
> > > 2_5_deg__regional_long__zones = 144 ;
> > > days = 31 ;
> > > hours = 24 ;
> > > 5_0_deg__regional_colat__zones = 36 ;
> > > 5_0_deg__regional_long__zones = 72 ;
> > > 10_0_deg__regional_colat__zones = 18 ;
> > > 10_0_deg__regional_long__zones = 36 ;
> > > 2_5_deg__zonal_colat__zones = 72 ;
> > > 5_0_deg__zonal_colat__zones = 36 ;
> > > 10_0_deg__zonal_colat__zones = 18 ;
> > > 2_5_deg__global_zone = 1 ;
> > > 5_0_deg__global_zone = 1 ;
> > > 10_0_deg__global_zone = 1 ;
> > >
> > > variables:
> > > float
> > > Solar_incidence(2_5_deg__regional_colat__zones,
> > > 2_5_deg__regional_long__zones) ;
> > > Solar_incidence:_FillValue =
> > > 3.4028235e+38f ;
> > > Solar_incidence:valid_range = 0.f,
> > > 500000.f ;
> > > Solar_incidence:long_name = "2.5
> > > Degree Regional, Monthly (Day), Total-sky
> > Averages" ;
> > > Solar_incidence:units = "Watt
> > hours
> > > per square meter" ;
> > > float
> > > Net_radiant_flux(2_5_deg__regional_colat__zones,
> > > 2_5_deg__regional_long__zones) ;
> > > Net_radiant_flux:_FillValue =
> > > 3.4028235e+38f ;
> > > Net_radiant_flux:valid_range =
> > -200.f,
> > > 200.f ;
> > > Net_radiant_flux:long_name = "2.5
> > > Degree Regional, Monthly (Day), Total-sky
> > Averages" ;
> > > Net_radiant_flux:units = "Watts
> > per
> > > square meter" ;
> > > float
> > > Longwave_flux(2_5_deg__regional_colat__zones,
> > > 2_5_deg__regional_long__zones) ;
> > > Longwave_flux:_FillValue =
> > > 3.4028235e+38f ;
> > > Longwave_flux:valid_range = 50.f,
> > > 450.f ;
> > > Longwave_flux:long_name = "2.5
> > Degree
> > > Regional, Monthly (Day), Total-sky Averages" ;
> > > Longwave_flux:units = "Watts per
> > > square meter" ;
> > > float
> > > Shortwave_flux(2_5_deg__regional_colat__zones,
> > > 2_5_deg__regional_long__zones) ;
> > > Shortwave_flux:_FillValue =
> > > 3.4028235e+38f ;
> > > Shortwave_flux:valid_range = 0.f,
> > > 1400.f ;
> > > Shortwave_flux:long_name = "2.5
> > Degree
> > > Regional, Monthly (Day), Total-sky Averages" ;
> > > Shortwave_flux:units = "Watts per
> > > square meter" ;
> > > float
> > Albedo(2_5_deg__regional_colat__zones,
> > > 2_5_deg__regional_long__zones) ;
> > > Longwave_flux:units = "Watts per square meter" ;
> > > byte
> > Number_of_hours_of_longwave_flux(days,
> > > 2_5_deg__regional_colat__zones,
> > > 2_5_deg__regional_long__zones) ;
> > >
> > > Number_of_hours_of_longwave_flux:valid_range =
> > '\0',
> > > '\30' ;
> > >
> > > Number_of_hours_of_longwave_flux:_FillValue =
> > '\177' ;
> > >
> > > Number_of_hours_of_longwave_flux:long_name = "2.5
> > > Degree Regional, Daily, Total-sky Averages" ;
> > >
> > Number_of_hours_of_longwave_flux:units
> > > = "hours" ;
> > > float Shortwave_flux(days,
> > > 2_5_deg__regional_colat__zones,
> > > 2_5_deg__regional_long__zones) ;
> > >
> > > 2. I used information from here to create a .ddf
> > file
> > > that will then be used with the GrADS xdfopen file
> > > command. I include the file here (I followed the
> > > example provided by the GrADS web site that
> > describe
> > > this):
> > >
> > > DSET ^CER_ES4_Aqua-FM3_Edition2_024024.200207
> > > TITLE This is only a test
> > > UNDEF 1.0E15
> > > XDEF 2_5_deg__regional_long__zones 144 LINEAR
> > -180.0
> > > 2.5
> > > YDEF 2_5_deg__regional_colat__zones 91 LINEAR
> > -90.0
> > > 2.0
> > > TDEF days 31 LINEAR 0Z01JUL2002 1MO
> > > ZDEF 1 LEVELS 1000
> > > VARS 5
> > > Solar_incidence=>solin 0 99 Incident Radiation
> > > Net_radiant_flux=>netflux 0 99 Net radiation
> > > Longwave_flux=>lwflux 0 99 Longwave flux
> > > Shortwave_flux=>swflux 0 99 Shortwave flux
> > > Albedo=>albedo 0 99 Albedo
> > > ENDVARS
> > >
> > > 3.Finally, when I try to open the file in GrADS
> > using
> > > xdfopen command, I receive these errors:
> > >
> > > XDFopen Error: Missing or invalid dimension size.
> > > --> The invalid description file record is:
> > > --> zdef 1 levels 1000
> > > The data file was not opened.
> > >
> > > I am using grads 1.8SL11
> > >
> > >
> > > Thank you,
> > >
> > > Andreea Ira
> >
>
>
>
>
> __________________________________
> Do you Yahoo!?
> The all-new My Yahoo! - What will yours do?
> http://my.yahoo.com
>
More information about the gradsusr
mailing list