Due to the current gap in continued funding from the U.S. National Science Foundation (NSF), the NSF Unidata Program Center has temporarily paused most operations. See NSF Unidata Pause in Most Operations for details.

Re: [netcdfgroup] ncdump, then ncgen

  • To: Dave Allured - NOAA Affiliate <dave.allured@xxxxxxxx>
  • Subject: Re: [netcdfgroup] ncdump, then ncgen
  • From: "HAVENER, KEVIN F GS-12 USAF ACC 14 WS/WXED" <kevin.havener@xxxxxxxxx>
  • Date: Tue, 24 Jan 2017 15:19:50 +0000
I figured out my mistake.  I now have ncgen regenerating a dumped file as 
expected. 

Kevin Havener


-----Original Message-----
From: Dave Allured - NOAA Affiliate [mailto:dave.allured@xxxxxxxx] 
Sent: Monday, January 23, 2017 2:28 PM
To: HAVENER, KEVIN F GS-12 USAF ACC 14 WS/WXED <kevin.havener@xxxxxxxxx>
Cc: netcdfgroup@xxxxxxxxxxxxxxxx
Subject: Re: [netcdfgroup] ncdump, then ncgen

Ncdump followed by ncgen generally works fine for me.  Try using plain ncgen, 
rather than ncgen3.  Also try explicitly specifying the ncgen option to select 
netcdf-3 file format.  I recall that the default output format changed 
occasionally with different versions of ncgen, so that might be your problem.


Also remember to use -p9,17 with ncdump, if you want to preserve full precision 
from the original numeric values.  Also use the -s option with ncdump, to get 
the correct special metadata for all advanced netcdf formats (64-bit, netcdf-4, 
and netcdf4-classic).

--Dave


On Mon, Jan 23, 2017 at 6:56 AM, HAVENER, KEVIN F GS-12 USAF ACC 14 WS/WXED 
<kevin.havener@xxxxxxxxx <mailto:kevin.havener@xxxxxxxxx> > wrote:


        If I understand correctly, I should be able to ncdump a netcdf to text 
(CDL) then ncgen it back to a valid netcdf file.  I tried this on a seemingly 
valid netcdf3 file and ncgen3'd it, but the new file was not in any way like 
the old one.  In fact, it didn't even seem to be a valid netcdf3 any 
longer--the file magic was incorrect.  Did I completely misunderstand the 
capabilities of the two programs?  Or did I just not understand how to do the 
process correctly?
        
        Kevin Havener, DAFC, 14WS/WXED
        

  • 2017 messages navigation, sorted by:
    1. Thread
    2. Subject
    3. Author
    4. Date
    5. ↑ Table Of Contents
  • Search the netcdfgroup archives: