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[netCDF #VZH-911645]: my 4-D netcdf data is not read by unidata fortran codes

Hi Pankaj,

Sorry, but we don't have the resources for detailed debugging of
user applications.  If you built the netCDF C and Fortan libraries 
and "make check" ran successfully, then the library and ncdump are
working as intended.  

If you suspect there is a bug in the library, we would need a small
program that demonstrated the bug by writing data to a netCDF file,
reading the data, and printing an indication of the bug.

--Russ

> Please look into the problem I am facing now in reading netcdf data
> using fortran codes. As suggested by you in the below mail, I did some
> corrections in my program for variable declaration. Thus the program is
> executed successfully now and the netcdf data is read by the program and
> the output is also generated.
> 
> However, the range of data is  between 1.03624427E-06 to 1.03720561E-06
> in increasing order for 360 (lon) x 180 (lat) x 15 (layers) x 12 (time)
> points. I think the data is not properly generated since ncdump of the
> netcdf data file shows many missing data as well and a different data
> set. I checked with other fortran code also with suggested correction,
> however the program could read netcdf data properly and the output
> generated is same.
> 
> ncdump of netcdf data generates below sample:
> 
> _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _,
> _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _,
> _,
> _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _,
> _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _,
> _,
> (many missing data lines)
> :
> :
> _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _,
> _, _, _, _, _, _, _, _, _, _, 0.01161965, 0.01172744, 0.0118268,
> 0.01196955, 0.01214784, 0.0123204, 0.01234178, 0.01217634, 0.
> 01188548,
> 0.01164075, 0.01148022, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _,
> _,
> _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _,
> _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _,
> _,
> _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _,
> _,
> _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _,
> _,
> _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, 0.00113727,
> 0.001201613, 0.001232482, 0.001210016, 0.001129237, 0.001008214,
> 0.000850776, 0.0007075624, 0.0006338682, 0.0006352033, 0.0006716939,
> 0.0007437626, 0.0008677125, 0.001072157, 0.001404119, 0.001935425,
> 0.002639251, 0.003327798, 0.003907743, 0.004484775, 0.004986423,
> 0.00537102, 0.005751694, 0.006038316, 0.006216454, 0.006355461,
> 0.006524057, 0.006707882, 0.006811586, 0.006774242, 0.006615386,
> 0.006460694, 0.006332785, 0.006236786, 0.006161074, 0.006096281,
> 0.006028299, 0.005944978, 0.00588075, 0.005860889, 0.005849245,
> 0.005848445, 0.005817015, 0.005784002, 0.005819898, _, _, _, _, _, _,
> _,
> _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _,
> _,
> _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _,
> _,
> _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _,
> _,
> _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _,
> :
> :
> afterwards continuous data set for the rest of larger part
> :
> :
> 0.0003057834, 0.0002918573, 0.0002743326, 0.0002530323, 0.0002287087,
> 0.0002033903, 0.0001799934, 0.0001603418, 0.0001450872, 0.0001339376,
> 0.0001261685, 0.0001208666, 0.0001169688, 0.0001133534, 0.0001094718,
> 0.0001055817, 0.0001018786, 9.898411e-05, 9.733205e-05, 9.677732e-05,
> 9.674822e-05, 9.675948e-05, 9.687019e-05, 9.717577e-05, 9.762236e-05,
> 9.797748e-05, 9.793872e-05, 9.735269e-05, 9.620324e-05, 9.464778e-05,
> 9.29976e-05, 9.155437e-05, 9.073644e-05, 9.142152e-05, 9.31278e-05,
> 9.496194e-05, 9.662777e-05, 9.829528e-05, 0.0001000483, 0.0001016511,
> 0.0001030593, 0.0001046747, 0.0001068782, 0.0001098189, 0.0001138458,
> :
> :
> 
> ----- Original Message -----
> From: "Unidata netCDF Support" <address@hidden>
> Sent Date: 04:34:50 Thu January 30, 2014
> 
> > Hi Pankaj,
> >
> > > I am looking for urgent help in reading 4-D netcdf data. I have
> > > tried to read my data using UNIDATA various fortran codes and
> > > c-program but after successful compilation, "variable not found stop
> > > 2" message is delivered on executing although UNIDATA sample netcdf
> > > files are duly read using these fortran codes.
> >
> > For netcdfread_4D.f90, you are using the wrong variable names for
> > what's actually in the netCDF file you're reading.  Try:
> >
> > !      character (len = *), parameter :: LAT_NAME = "latitude"
> >        character (len = *), parameter :: LAT_NAME = "TLAT"
> > !      character (len = *), parameter :: LON_NAME = "longitude"
> >        character (len = *), parameter :: LON_NAME = "TLONG"
> >
> > For the second program, netcdfread_4D.f90, the same problem occurs,
> > since there is no variable in the file named "data".  If you want to
> > read values of the variable named "BSI", try:
> >
> > !      character (len = *), parameter :: VAR_NAME='data'
> >        character (len = *), parameter :: VAR_NAME='BSI'
> >
> > --Russ
> >
> > Russ Rew                                         UCAR Unidata Program
> > address@hidden                      http://www.unidata.ucar.edu
> >
> >
> >
> > Ticket Details
> > ===================
> > Ticket ID: VZH-911645
> > Department: Support netCDF
> > Priority: Normal
> > Status: Closed
> >
> >
> 
> 
> 
Russ Rew                                         UCAR Unidata Program
address@hidden                      http://www.unidata.ucar.edu



Ticket Details
===================
Ticket ID: VZH-911645
Department: Support netCDF
Priority: High
Status: Closed