NOTICE: This version of the NSF Unidata web site (archive.unidata.ucar.edu) is no longer being updated.
Current content can be found at unidata.ucar.edu.

To learn about what's going on, see About the Archive Site.

Re: ncdigest V1 #1119

Quincey Koziol wrote:

Hi Jeff,

On Aug 8, 2007, at 10:25 PM, ncdigest wrote:
ncdigest Wednesday, August 8 2007 Volume 01 : Number 1119 



Today's Topics:
arrays of fixed-length strings

----------------------------------------------------------------------

Date: Wed, 08 Aug 2007 11:26:40 -0600
From: Jeff Whitaker <jswhit@xxxxxxxxxxx>
Subject: arrays of fixed-length strings

In netcdf-4.0, I don't see how to create variables which are arrays of
strings with length > 1.  I see how to create arrays of
single-characters, and arrays of variable-length strings, but not
strings of a specified length.

Am I missing something, or is this not supported by HDF5?
Yes, fixed-length arrays are supported in HDF5. You need to use something like the following HDF5 calls: 

    tid = H5Tcopy(H5T_C_S1);
    H5Tset_size(tid, <string length>);

    Quincey
Quincey: OK, thanks. Maybe Russ or Ed can tell me whether this is possible in netcdf-4.0? Being limited to single character arrays in netcdf-3 was one of things I really wanted netcdf-4 to overcome. Variable length strings are nice, but they don't map well to commonly used data structures (i.e. arrays) in fortran or python. 

-Jeff

--
Jeffrey S. Whitaker         Phone : (303)497-6313
NOAA/OAR/CDC  R/PSD1        FAX   : (303)497-6449
325 Broadway                Boulder, CO, USA 80305-3328

==============================================================================
To unsubscribe netcdfgroup, visit:
http://www.unidata.ucar.edu/mailing-list-delete-form.html
==============================================================================
  • 2007 messages navigation, sorted by:
    1. Thread
    2. Subject
    3. Author
    4. Date
    5. ↑ Table Of Contents
  • Search the netcdfgroup archives: