[gradsusr] Error: No Discernable X Coordinate NetCDF File Using Control File

Adam Frumkin ajf09f at fsu.edu
Sat Jun 25 23:19:44 EDT 2011


Hello all,

I am experiencing an error when I attempt to open a NetCDF file with a
control file.
The netcdf file containsSST data from CCSM4 downloaded from ESG.
I am using GrADS version 2.0.a9 on Unix.

Below I will paste the GrADS error I get, the control file I am using,
and some of the output from ncdump -c that I think might be important.

Sincerely,

Adam Frumkin


The GrADS error after xdfopen:

Scanning Descriptor File:  temp.1.ctl
gadsdf: SDF file has no discernable X coordinate.   <---- I assume
this  is the main error
SDF Descriptor file temp.1.ctl was not successfully opened & parsed.


The control file I am using:

dset ^temp.1900-1909.nc
options 365_day_calendar
dtype netcdf
TDEF time 120 LINEAR 00:00Z01JAN1900 1mo


SOME of The output from ncdump -c:

dimensions:
  nlat = 384 ; <-This does not appear anywhere in the ncdump output
  nlon = 320 ; <-This also doesn't appear anywhere
  time = UNLIMITED ; // (120 currently) <-This appears and all the
dimensions listed below this appear
  z_t = 60 ;
  z_w = 60 ;
  lat_aux_grid = 395 ; <This appears and I pasted some of it below
  moc_comp = 3 ;
  nchar = 256 ;
  moc_z = 61 ;
  d2 = 2 ;
  transport_comp = 5 ;
  transport_reg = 2 ;
  z_t_150m = 15 ;
  z_w_bot = 60 ;
  z_w_top = 60 ;

float TEMP(time, z_t, nlat, nlon) ;
    TEMP:long_name = "Potential Temperature" ;
    TEMP:units = "degC" ;
    TEMP:coordinates = "TLONG TLAT z_t time" ;
    TEMP:grid_loc = "3111" ;
    TEMP:cell_methods = "time: mean" ;
    TEMP:_FillValue = 9.96921e+36f ;
    TEMP:missing_value = 9.96921e+36f ;.

data:
 lat_aux_grid = -79.48815, -78.9529, -78.41866,....

-- 
Adam J. Frumkin
2035 E. Paul Dirac Dr.
200 RM Johnson Bldg.
Cubicle B-3 COAPS
Tallahassee, FL 32306-2840
Cell Phone (603) 247 - 3914




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