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Re: C++ and record variables

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  • Subject: Re: C++ and record variables
  • Date: Tue, 06 Sep 1994 13:05:05 -0600
> Organization: NOAA/ERL
> Keywords: 199409011356.AA29525 C++ record variables bug

Tom,

>       I tried your suggestion on the C++ record variables and I still get the
> same results. Here is my short test program:
> ------------------------------------------------------------------------------
> #include <stdio.h>
> #include "netcdf.hh"
> 
> int main()
> {
>         float data[3][50];
>         int i,j,k;
>         long start[3];
>         long rec=0;
>         long nrec=1;
>         long number=0;
> 
> 
>         for(j=0;j<3;j++)
>                 for(i=0;i<50;i++)
>                         data[j][i]=((float)i*.5)+(float)number;
> 
>         NcOldFile file ("scr.nc",NcOldFile::Write);
> 
>         NcDim* TIME=file.get_dim("time");
>         NcDim* HEIGHTS=file.get_dim("heights");
>         NcDim* BEAM=file.get_dim("beam");
> 
>         NcVar* velId=file.get_var("vel");
> 
>         velId->put((float *)&data,nrec,BEAM->size(),HEIGHTS->size());
> 
>         velId->set_cur(++rec);
> 
>         velId->put((float *)&data,nrec,BEAM->size(),HEIGHTS->size());
> 
>         return(0);
> }
> --------------------------------------------------------------------------------
> Here is the test cdl file that I'm using:
> 
> --------------------------------------------------------------------------------
> netcdf scr
>     {
> 
> // Santa Cruz profiler site NetCDF file.
> 
>     dimensions:
> 
>         time = UNLIMITED;
>         namelen = 30;
>         heights = 50;
>         beam = 3;
>         az = 3;
>         el = 3;
> 
>     variables:
> 
> // Actual data variables:
> 
>         //      Radial Velocity
> 
>         float
>             vel(time, beam, heights);
>             vel:long_name = "Radial Velocity, all beams";
>             vel:units = "meters/second";
>             vel:valid_range = -100.f, 100.f;
> 
> }
> 
> --------------------------------------------------------------------------------
> 
> What I am doing wrong? Is the fact that I'm using a cdl file causing the 
> problem?

Your test program demonstrates a bug in the NcVar::set_cur() member
function.  I've appended a two-line patch that I think fixes the bug.
Thanks for reporting the problem.  Please let me know if this doesn't fix it
for you.

--
Russ Rew                                                UCAR Unidata Program
address@hidden                                          P.O. Box 3000
http://www.unidata.ucar.edu/                          Boulder, CO 80307-3000

RCS file: /upc/new/CVS/netcdf/c++/netcdf.cc,v
retrieving revision 1.46
diff -r1.46 netcdf.cc
672c672
<               if (t[i] >= get_dim(i)->size())
---
>               if (t[i] >= get_dim(i)->size() && ! get_dim(i)->is_unlimited())
687c687
<       if (cur[i] >= get_dim(i)->size())
---
>       if (cur[i] >= get_dim(i)->size() && ! get_dim(i)->is_unlimited())