Re: grid_number in netCDF file

• To: Tom Whittaker <tomw@xxxxxxxxxxxxx>
• Subject: Re: grid_number in netCDF file
• From: Robb Kambic <rkambic@xxxxxxxxxxxxxxxx>
• Date: Tue, 6 Apr 1999 08:27:35 -0600 (MDT)

On Mon, 5 Apr 1999, Tom Whittaker wrote:

Robb:

> ngrids is a dimension only, the grid_number should be at the bottom of the
> cdl file:

> > grid_number = 236, 255 ;

Thanks for your note.  I did locate the grid number, as you say.  My
problem was that the variable "grid_number" is specified as having
dimensions (nav, ngrids) and my software was not expecting this, since
my only other examples (eta and ruc) had only one dimension (nav) for
this variable; therefore, when I tried to do a 'getInt()' on it with
only one index array value, I got an exception.

I will change the software so that it correctly detects the number of
dimensions of this variable...will it always be the case that if the
dimension 'ngrids' does not show up in some variable that the implied
values for the grid number is given by "grid_number(0,0)"?

Tom,

Yep.  The decoders, I have written always reads a cdl file first to get
the dimensions and  variables before trying to read the netCDF file. This

Robb...

Thanks for your patience...this is my "first time" with the
NetCDF APIs in Java...

> > I attached ruc2.cdl in case your copy was somehow corrupted. I used

> ncdump on a ruc2.nc file today and located grid_number ok, maybe the file
> Don sent was corrupted.  This happens once in a while when there is no
> disk space to write the ruc2.nc file.  These files are large:
> 48478444 Apr  5 12:42 99040518_ruc2.nc

>

I'll say -- the one Don sent was like 190MBs...

Thanks again.

tom

--
Tom Whittaker  (tomw@xxxxxxxxxxxxx)
University of Wisconsin-Madison
Space Science and Engineering Center

Phone/Voicemail: 608/262-2759 Fax: 608/263-6738

==============================================================================
Robb Kambic                                Unidata Program Center
Software Engineer III                      Univ. Corp for Atmospheric Research
rkambic@xxxxxxxxxxxxxxxx                   WWW: http://www.unidata.ucar.edu/
==============================================================================

• References:
  • Re: grid_number in netCDF file
    • From: Tom Whittaker