[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[Support #JPR-616713]: Large NetCDF files and IDL 7.1 ????

This archive contains answers to questions sent to Unidata support through mid-2025. Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated. For the most up-to-date information on the use of NSF Unidata software and data services, please consult the Software Documentation first.

  • Subject: [Support #JPR-616713]: Large NetCDF files and IDL 7.1 ????
  • Date: Wed, 02 Sep 2009 16:21:23 -0600
Hi Julio,

> I would like create some large netcdf files (probably in the 5-10 GB
> range) using IDL, but I find that the version of netCDF supported in IDL
> 7.1 does not allow this.  I've looked online and have found some
> discussion of this issue implying there may a patch for IDL 7.1 to allow
> work with large netCDF files.
> 
> Is this true? If so how do I get this patch?

Sorry, but we don't know if there is such a patch or if so, how to get it.
I suggest asking IDL support if such a patch exists.

You may be thinking that netCDF-4 support (supposed to be in IDL version 7.2) 
is needed to create 5-10GB netCDF files, but it may be possible to create 
such large netCDF files using netCDF-3 in the current IDL.  For details, see 
the answers to these FAQs:

  How can I write variables larger than 4 GiB?
  http://www.unidata.ucar.edu/netcdf/docs/faq.html#Large%20File%20Support11_5

and 

  Was it possible to create netCDF files larger than 2 GiBytes before version 
3.6?
  http://www.unidata.ucar.edu/netcdf/docs/faq.html#lfs

--Russ

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



Ticket Details
===================
Ticket ID: JPR-616713
Department: Support netCDF
Priority: Normal
Status: Closed