[gradsusr] xdfopen netcdf

[Qian, JianHua]

Grads Users,

I got the following message when doing
xdfopen uwnd_3d_day_79_08.ctl

ga-> xdfopen uwnd_3d_day_79_08.ctl
Scanning Descriptor File:  uwnd_3d_day_79_08.ctl
gadxdf error: Missing or invalid dimension size.
  --> The invalid description file record is:
  --> xdef  144 linear 0.0 2.5
  The data file was not opened.

The descriptor file uwnd_3d_day_79_08.ctl   is copied below:

dset ^uwnd.%y4.nc
dtype netcdf
title 3-D NCEP-DOE uwnd 1jan1979 to 31dec2008
undef  -1.e+34
xdef  144 linear 0.0 2.5
ydef   73 linear 90.0 -2.5
zdef 17 levels 1000 925 850 700 600 500 400 300 250 200 150 100 70 50 30 20 10
tdef  10958 linear 00z01jan1979  24hr
vars 1
uwnd      17   t,z,y,x    m/s
Endvars

The data files are in the current directory:
uwnd.1979.nc
uwnd.1980.nc
…
When I do ncdump uwnd.1979.nc , I got:
netcdf uwnd.1979 {
dimensions:
lon = 144 ;
lat = 73 ;
level = 17 ;
time = UNLIMITED ; // (365 currently)
nbnds = 2 ;
variables:
float level(level) ;
level:units = "millibar" ;
level:actual_range = 1000.f, 10.f ;
level:long_name = "Level" ;
level:positive = "down" ;
level:GRIB_id = 100s ;
level:GRIB_name = "hPa" ;
level:axis = "z" ;
level:coordinate_defines = "point" ;
float lat(lat) ;
lat:units = "degrees_north" ;
lat:actual_range = 90.f, -90.f ;
lat:long_name = "Latitude" ;
lat:standard_name = "latitude_north" ;
lat:axis = "y" ;
lat:coordinate_defines = "point" ;
float lon(lon) ;
lon:units = "degrees_east" ;
lon:long_name = "Longitude" ;
lon:actual_range = 0.f, 357.5f ;
lon:standard_name = "longitude_east" ;
lon:axis = "x" ;
lon:coordinate_defines = "point" ;
double time(time) ;
time:units = "hours since 1800-1-1 00:00:0.0" ;
time:long_name = "Time" ;
time:actual_range = 1569072., 1577808. ;
time:delta_t = "0000-00-01 00:00:00" ;
time:standard_name = "time" ;
time:axis = "t" ;
time:coordinate_defines = "start" ;
time:avg_period = "0000-00-01 00:00:00" ;
…
Could someone give me a clue?

Thanks!
Joshua
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