Re: netCDF file works in v2.0 but not v2.1

• To: "Gustafson, William I" <william.gustafson@xxxxxxx>
• Subject: Re: netCDF file works in v2.0 but not v2.1
• From: Don Murray <dmurray@xxxxxxxxxxxxxxxx>
• Date: Wed, 07 Mar 2007 05:57:12 -0700

Hi Bill-

Could you send a note to support-idv@xxxxxxxxxxxxxxxx with
a pointer to the file on an http or ftp server (or if it's
small, attach it to the message).  We recently had another
inquiry about a similar problem and would like to check
into this further.   For the other user, it appeared to
be a problem in the underlying netCDF library and using the
latest stable beta worked.  You could get that at:

http://www.unidata.ucar.edu/software/idv/release/stable

and try it if you are daring. ;-)

Don Murray

Gustafson, William I wrote:

Hi,

I just upgraded from v2.0 of IDV to v2.1. I have a netCDF file that works in
v2.0, but when I use it in v2.1 it does not. I am able to open the file, but
when I choose a variable for a contour plot I get error:
    An error has occurred:
    Couldn¹t get data
    java.lang.NullPointerException
This gets followed by another error dialog box saying ³Unable to load field:
T2². The sequence gets repeated twice. Below is the header output for the
file if that helps anybody decipher this one.

Thanks for your help.

-Bill


HEADER INFO...

netcdf test {
dimensions:
    WEST_EAST5_125 = 121 ;
    SOUTH_NORTH20_170 = 151 ;
variables:
    double WEST_EAST5_125(WEST_EAST5_125) ;
        WEST_EAST5_125:point_spacing = "even" ;
        WEST_EAST5_125:axis = "X" ;
    double SOUTH_NORTH20_170(SOUTH_NORTH20_170) ;
        SOUTH_NORTH20_170:point_spacing = "even" ;
        SOUTH_NORTH20_170:axis = "Y" ;
    float XLONG(SOUTH_NORTH20_170, WEST_EAST5_125) ;
        XLONG:missing_value = -1.e+34f ;
        XLONG:_FillValue = -1.e+34f ;
        XLONG:long_name = "XLONG" ;
        XLONG:long_name_mod = "T=0.5:8.5@AVE" ;
        XLONG:history = "From cam-wrfout_d01_1994-01-new" ;
        XLONG:units = "degree_east" ;
    float XLAT(SOUTH_NORTH20_170, WEST_EAST5_125) ;
        XLAT:missing_value = -1.e+34f ;
        XLAT:_FillValue = -1.e+34f ;
        XLAT:long_name = "XLAT" ;
        XLAT:long_name_mod = "T=0.5:8.5@AVE" ;
        XLAT:history = "From cam-wrfout_d01_1994-01-new" ;
        XLAT:units = "degree_north" ;
    float HGT(SOUTH_NORTH20_170, WEST_EAST5_125) ;
        HGT:missing_value = -1.e+34f ;
        HGT:_FillValue = -1.e+34f ;
        HGT:long_name = "HGT" ;
        HGT:long_name_mod = "T=0.5:8.5@AVE" ;
        HGT:history = "From cam-wrfout_d01_1994-01-new" ;
        HGT:units = "m" ;
        HGT:coordinates = "XLONG XLAT" ;
    float T2(SOUTH_NORTH20_170, WEST_EAST5_125) ;
        T2:missing_value = -1.e+34f ;
        T2:_FillValue = -1.e+34f ;
        T2:long_name = "T2" ;
        T2:long_name_mod = "T=0.5:8.5@AVE" ;
        T2:history = "From cam-wrfout_d01_1994-01-new" ;
        T2:units = "K" ;
        T2:coordinates = "XLONG XLAT" ;

// global attributes:
        :history = "Tue Mar  6 11:01:06 2007: ncatted -a
coordinates,T2,o,c,XLONG XLAT test.nc\n",
            "FERRET V5.81    6-Mar-07" ;
}



--------------------------------------------------------------------
William I. Gustafson Jr.
Atmospheric Science and Global Change Division
Pacific Northwest National Laboratory
3200 Q Ave., MSIN K9-30
Richland, WA 99352
(509)372-6110

--
*************************************************************
Don Murray                               UCAR Unidata Program
dmurray@xxxxxxxxxxxxxxxx                        P.O. Box 3000
(303) 497-8628                              Boulder, CO 80307
http://www.unidata.ucar.edu/staff/donm
*************************************************************

• References:
  • netCDF file works in v2.0 but not v2.1
    • From: Gustafson, William I