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

[netCDF #PFU-753378]: Error in closing netCDF file (due to presence of user-defined type)

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 Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated.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: [netCDF #PFU-753378]: Error in closing netCDF file (due to presence of user-defined type)
  • Date: Thu, 24 Jan 2013 06:46:23 -0700
Hi Lynton,

> I have a short programme that throws up an HDF5 error: NC_EHDFERR  when 
> closing. It appears to be connected with defining a user-defined type:
> Have  you got any idea what the problem is?
> 
> 
> The output of the code is:
> 0 1
> 0 2
> 0 3
> 0 4
> 0 5
> 0 6
> 0 7
> 0 9
> 0 10
> -101 11

It looks to me as if you started to define a netCDF user-defined type
named "ironBoundaryType", but didn't finish that definition.  Then you
tried to define netCDF variables of the incompletely defined type.
It's a bug that the netCDF API lets you do this without returning an
error until you close the file.  I'm not sure whether there's also a
corresponding bug in HDF5 that allows this.

To complete the definition of the user-defined type, you need to fill
out the type with repeated calls to nc_insert_compound(). Call the
nc_insert_compound function once for each field (member) you wish to
insert into the compound type.  Don't define variables using a type
until you finish defining the type.

I'll enter a Jira ticket for this later and try to determine where the bug
is, but it may have to wait until after we get the 4.3 release for the C
library out ...

--Russ

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



Ticket Details
===================
Ticket ID: PFU-753378
Department: Support netCDF
Priority: Normal
Status: Closed