Re: [netcdfgroup] [Reformatted/indented] I wonder why I can not wirte NC files by usingnc_put_vara_float

• To: "nasamars" <canghai.yu@xxxxxxxxx>, <netcdfgroup@xxxxxxxxxxxxxxxx>
• Subject: Re: [netcdfgroup] [Reformatted/indented] I wonder why I can not wirte NC files by usingnc_put_vara_float
• From: Fabrício Zimmerer Murta <fabricio@xxxxxxxxxxxxxxxx>
• Date: Mon, 13 Aug 2012 15:57:31 -0300

reformatted below. sorry if I am not of much help.

From: nasamars 
Sent: Sunday, August 12, 2012 9:58 PM
To: netcdfgroup@xxxxxxxxxxxxxxxx 
Subject: [netcdfgroup] I wonder why I can not wirte NC files by 
usingnc_put_vara_float

first i used NC_CREATE to create an nc file,then i used NC_WRITE to modify the 
contents. After that i found i can change the status except the contents by 
using nc_put_vara_float. source: 
<nabble_embed> 
void CreateAMonthFile(char *OutputPath,float* val,struct ParameterGroup pg){ 
  ... 
  size_t startp[] ={ RealTimeNumber, 0, 0, 0 };
  size_t countp[] ={ 1, 1, pg.LatNumber, pg.LonNumber };
  iForecastTime = 0; 
  for (; iForecastTime < pg.ForecastNumber; iForecastTime++){ 
    float ValTemp[115 * 87]; 
    i = 0; 
    for (; i < pg.LatNumber * pg.LonNumber; i++){ 
      ValTemp[i] = val[INDEX(iForecastTime, iVar, i, pg.VarNumber, pg.LatNumber 
* pg.LonNumber)];
    }
    status = nc_put_vara_float(ncid, varid[iForecastTime], startp, countp, 
ValTemp); 
    if (status != NC_NOERR) handle_error(status);
  } 
  ... 
} 
it seems correct. but when i using 
void AddNewFile(char *OutputPath,float* val,struct ParameterGroup pg, int 
RealTimeNumber){
  ... 
  nc_open(path, NC_WRITE, &ncid);
  if (status != NC_NOERR) handle_error(status);
  ...
  size_t startp[] ={ RealTimeNumber, 0, 0, 0 };
  size_t countp[] ={ 1, 1, pg.LatNumber, pg.LonNumber };
  float ValTemp[pg.LonNumber * pg.LatNumber];
  int i = 0;
  for (; i < pg.LatNumber * pg.LonNumber; i++) { 
    ValTemp[i] = val[INDEX(iForecastTime, iVar, i, pg.VarNumber, pg.LatNumber * 
pg.LonNumber)];
    i++;
  }
  char s[3];
  sprintf(s, "%03d", iForecastTime);
  memcpy(Varname, VarNameString[iVar], 10);
  strcat(Varname, s);
  status = nc_inq_varid(ncid, Varname, &varid[iForecastTime]);
  if (status != NC_NOERR) handle_error(status);
  status = nc_put_vara_float(ncid, varid[iForecastTime], startp, countp, 
ValTemp);
  if (status != NC_NOERR) handle_error(status);
  ...
}
in this section i found it is no changes whatever the values of ValTemp i 
filled 
</nabble_embed> 


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nc_put_vara_float
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• References:
  • [netcdfgroup] I wonder why I can not wirte NC files by using nc_put_vara_float
    • From: nasamars