[ncl-talk] the fatal error: Dimension (x) of file does not have an associated coordinate variable

[朱学明]

Hello all,
   
    I have got an error as follow,

fatal:["FileSupport.c":133]:Dimension (x) of file (ext-PSY4V1R3_1dAV_201201_gridU) does not have an associated coordinate variable
fatal:["Execute.c":8567]:Execute: Error occurred at or near line 184 in file mercator_vector_rectangle.ncl

Here is the line 184 in file mercator_vector_rectangle.ncl:

u   = uin->vozocrtx(0,depth-1,{lat_min:lat_max},{lon_min:lon_max}) 

The nc file head from command "ncdump -h aaa.nc" is as follow,

netcdf ext-PSY4V1R3_1dAV_201201_gridU {
dimensions:
 y = 429 ;
 x = 566 ;
 depthu = 50 ;
 time_counter = UNLIMITED ; // (1 currently)
variables:
 short nav_lon(y, x) ;
  nav_lon:units = "degrees_east" ;
  nav_lon:valid_min = 98.f ;
  nav_lon:valid_max = 146.f ;
  nav_lon:add_offset = 0.f ;
  nav_lon:scale_factor = 0.01f ;
  nav_lon:long_name = "Longitude" ;
  nav_lon:nav_model = "Default grid" ;
 short nav_lat(y, x) ;
  nav_lat:units = "degrees_north" ;
  nav_lat:valid_min = -6.f ;
  nav_lat:valid_max = 30.f ;
  nav_lat:add_offset = 0.f ;
  nav_lat:scale_factor = 0.01f ;
  nav_lat:long_name = "Latitude" ;
  nav_lat:nav_model = "Default grid" ;
 float depthu(depthu) ;
  depthu:units = "m" ;
  depthu:positive = "unknown" ;
  depthu:valid_min = 0.f ;
  depthu:valid_max = 5728.f ;
  depthu:title = "depthu" ;
  depthu:long_name = "Vertical U levels" ;
 float time_counter(time_counter) ;
  time_counter:calendar = "gregorian" ;
  time_counter:title = "Time" ;
  time_counter:long_name = "Time axis" ;
  time_counter:units = "seconds since 2007-10-31 00:00:00" ;
  time_counter:time_origin = "2007-OCT-31 00:00:00" ;
 float vozocrtx(time_counter, depthu, y, x) ;
  vozocrtx:units = "m/s" ;
  vozocrtx:missing_value = -32767s ;
  vozocrtx:valid_min = -9999.99952502551 ;
  vozocrtx:valid_max = 9999.99952502551 ;
  vozocrtx:long_name = "Zonal Velocity" ;
  vozocrtx:short_name = "vozocrtx" ;
  vozocrtx:standard_name = "sea_water_x_velocity" ;
  vozocrtx:online_operation = "N/A" ;
  vozocrtx:axis = "TZYX" ;
  vozocrtx:interval_operation = 432000. ;
  vozocrtx:interval_write = 432000. ;
  vozocrtx:associate = "time_counter depthu nav_lat nav_lon" ;
  vozocrtx:coordinates = "nav_lon nav_lat depthu time_counter" ;

// global attributes:
  :Conventions = "GDT 1.3" ;
  :file_name = "ORCA12_LIM-T103_y2011m12d31_gridU.nc" ;
  :production = "OPA9.0 beta" ;
  :TimeStamp = "2012-JAN-09 04:45:09 GMT+0000" ;
  :NCO = "4.0.2" ;
  :nco_openmp_thread_number = 1 ;
}

  How should I modify the ncl code or change the ncfile to fix the problem?  Thanks.

2016-01-12



Xueming Zhu 朱学明
Key Laboratory of Research on Marine Hazards Forecasting (LoMF), SOA
National Marine Environmental Forecasting Center (NMEFC)
No.8, Dahuisi Road, Haidian District, Beijing, 100081
People's Republic of China
Tel:+86-10-82481923
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