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[netCDF #PRS-970596]: Help

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  • Subject: [netCDF #PRS-970596]: Help
  • Date: Fri, 13 Aug 2010 15:31:34 -0600
Hi Stephan,
 
> FYI: I have been able to build netCDF in the Windows by rebuild the c project 
> as a static library and then using the C++ interface inside my Project

Good, congratulations!
 
> I have another question / issue:
> 
> Using the pres_temp_4D_wr.cpp example, I have been able to create a file and 
> then display it.
> 
> I would like to be able to define a 3rd dimension ( i.e. in the example 
> "level") in terms of a variable for altitudes. When using the display tool 
> (LLnL VisIt), I can not display the pressure.

I'm not usre I understand the question, but maybe you just want to define a 
third
coordinate variable, level, to provide the altitudes corresponding to each level
dimension index.  In that case, just follow the pattern for latVar and lonVar:

  // Define the level coordinate variable for altitudes
  NcVar *levelVar;
  if (!(levelVar = dataFile.add_var("level", ncFloat, lvlDim)))

  // Define the units attribute for the level coordinate variable.
  if (!levelVar->add_att("units", "meters"))
      return NC_ERR;

  // Write the level coordinate variable data to the file.
  float levels[NLVL];
  for (int lvl = 0; lvl < NLVL; lvl++)
     levels[lvl] = 100.0 * lvl;  // for 0 meters, 100 meters, ...
  if (!levelVar->put(levels, NLVL))
      return NC_ERR;

--Russ

Russ Rew                                         UCAR Unidata Program
address@hidden                      http://www.unidata.ucar.edu



Ticket Details
===================
Ticket ID: PRS-970596
Department: Support netCDF
Priority: Normal
Status: Closed