Re: netcdf (operators and c++ class)

> Organization:Department of Rangeland Ecology and Management, Texas A&M 
> University
> Keywords: 199410111337.AA20941 C++ interface, NcDim

Hi Dan,

> > >   Bugs:
> > >           NcFile::add_var(NcToken, NcType, int, const NcDim*)
> > >           changed to be
> > >           NcFile::add_var(NcToken, NcType, int, const NcDim**)
> > >           (I could not make a program pass a list of dims
> > >           in that it created.)

 ...

>                 I had trouble building an array of dims,
> because you can only get a single NcDim* from the file. 
> Here is what I wanted to do:
> 
>     NcDim* dimlist[curVar->num_dims()];
>     NcDim* tempDim;
>     for (int j = 0; j < curVar->num_dims(); j++) {
>       tempDim = curVar->get_dim(j);
>       dimlist[j] = outFile->get_dim(tempDim->name());
>       // try to use existing dim, if not add it
>       if (!dimlist[j]) {
>         if (!outFile->add_dim(tempDim->name(),tempDim->size())) {
>          exit 1;
>         }
>     }
> 
> Is there a way to make a const NcDim* that holds 2 elements?
> (because NcDim() is private "NcDim foo[12];" fails, the closest
> I came was NcDim* foo[12]) I got also changed line 166 of
> netcdf.cc from: 
> 
>     for (int i=0; i < ndims; i++)
>       dimids[i] = dims[i].id();
> 
> to:
> 
>     for (int i=0; i < ndims; i++)
>       dimids[i] = dims[i]->id();

After looking at it, I concluded that you're exactly right about this bug
and how to fix it.  I've incorporated your change.  It looks like if I had a
test for this version of the NcFile::add_var() member function, I would have
seen the problem.  Thanks for the fix.

> > >   Enhancements for NcVar:
> > > 
> > >           get_rec/put_rec/set_rec member functions that use
> > >           the unlimited dimension to step through records, includes
> > >           changes to NcVal to allow a size parameter so you get
> > >           just a record rather than an NcVal of the entire
> > >           variable.
> > > 
> > >           get_index(TYPE *key), a slow linear search that 
> > >           finds the record number of the first variable that matches
> > >           some key
> > 
> > These both seem worthwhile.  Can you make the changes available to me?
> >
> 
> I will, but right now they are interspersed with the New/Old file
> stuff (that I need to test/fix a bit.) It will be a easier to send both.
> If you haven't heard from me by Friday, hassle me.

I guess I could hassle you, but I'm in no great hurry to get these changes
since I won't be able to work on them until after next week anyway.  But I
would appreciate getting them when they're ready.  Thanks again for using
this stuff and giving us such valuable feedback.

--Russ