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[netCDF #MVE-325018]: reading netcdf file with fortran 77

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  • Subject: [netCDF #MVE-325018]: reading netcdf file with fortran 77
  • Date: Thu, 22 Feb 2007 19:25:24 -0700
> Hello unidata people!
> 
> 
> 
> The other times you helped me a lot. So I will ask you two more
> questions:
> 
> 
> 
> 1----I want to read a variable, for instante: (in fortran 77)
> 
> 
> 
> parameter(lon=2,lat=2,theta2,time4)
> 
> u(lon,lat,theta,time)
> 
> 
> 
> Have I to define the lon,lat,.....first?. But if you don't know the
> dimensions, can you define a maximun value to lon,lat...

Not if you are reading it; the person who write the file has to define lat and 
lon.

Take a look at the F77 examples:

http://www.unidata.ucar.edu/software/netcdf/examples/programs/
> 
> for example:
> 
> 
> 
> parameter(lon=10,lat=10,theta=10,time=10)
> 
> u(lon,lat,theta,time)
> 
> 
> 
> I tried it but the variable wasn't read correctly
> 
> 2----I want to read a variable with 4 dimensions u(x,y,z,t). I have had
> some problems because the 4 dimensions variable is too big.
> 
> The program reads the variable fast but I have problems writing
> them.
> 
> That I wanted to do is:
> 
> Read  for t=1 u(x,y,z)
> 
> t=2 u(x,y,z)
> 
> ....
> 
> I have read the variable with nf_get_var_real but it reads all the
> variable completely. And I have also tried with nf_get_vara_real but it
> doesn't work.
> 
> Do you know if is it possible?

Yes, this is possible, and nf_get_vara_real is what you want to use. Take a 
look at this example:
http://www.unidata.ucar.edu/software/netcdf/examples/programs/pres_temp_4D_rd.f

> 
> 
> 
> 
> 
> Thank you very much. You helped me always. You do a great work!!
> 

Thanks!

Keep on netCDFing!

Ed

Ticket Details
===================
Ticket ID: MVE-325018
Department: Support netCDF
Priority: Normal
Status: Closed