Re: [netcdf-java] Difference between netcdfJava 4.6.5 and 4.6.6

• To: Bob Simons - NOAA Federal <bob.simons@xxxxxxxx>, Java NetCDF <netcdf-java@xxxxxxxxxxxxxxxx>
• Subject: Re: [netcdf-java] Difference between netcdfJava 4.6.5 and 4.6.6
• From: Kent Yang <myang6@xxxxxxxxxxxx>
• Date: Wed, 15 Jun 2016 18:28:02 +0000
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The output from version 4.6.6 is right. This file is the so-called netCDF-4 
file, an HDF5 file that follows the netCDF-4 data model. You can use either 
ncdump (from C) or HDFView/h5dump to check the values. I think this is related  
to the fix of signed int representation in Java.

Kent

From: netcdf-java-bounces@xxxxxxxxxxxxxxxx 
[mailto:netcdf-java-bounces@xxxxxxxxxxxxxxxx] On Behalf Of Bob Simons - NOAA 
Federal
Sent: Wednesday, June 15, 2016 1:16 PM
To: Java NetCDF
Subject: [netcdf-java] Difference between netcdfJava 4.6.5 and 4.6.6

Using the file downloaded a week ago from
http://data.nodc.noaa.gov/thredds/catalog/testdata/wod_ragged/05052016/catalog.html?dataset=testdata/wod_ragged/05052016/ind199105_ctd.nc
(and hopefully unchanged since),
if I use this Java code to dump the values of 3 scalar variables
        StringWriter sw = new StringWriter();
        NCdumpW.print(String2.unitTestDataDir + 
"nccf/ncei/ind199105_ctd.nc<http://ind199105_ctd.nc>",
            sw, false, false, false, false, "crs;WODf;WODfd", //;-separated
            null /*cancel*/);
        System.out.println(sw.toString());

with netcdfAll-4.6.5.jar, I get:
...
 data:
crs =0
WODf =0
WODfd =0

with netcdfAll-4.6.6.jar, I get:
...
 data:
crs =-2147483647
WODf =-32767
WODfd =-32767

I suspect that the 4.6.5 results are correct, but I'm not certain.
If so, then it is a bug in 4.6.6.
If not, then please let me know.
Or maybe I'm doing something wrong.
Can you please investigate?
Thank you.

If I should report this some other place/way, please let me know.

--
Sincerely,

Bob Simons
IT Specialist
Environmental Research Division
NOAA Southwest Fisheries Science Center
99 Pacific St., Suite 255A      (New!)
Monterey, CA 93940               (New!)
Phone: (831)333-9878            (New!)
Fax:   (831)648-8440
Email: bob.simons@xxxxxxxx<mailto:bob.simons@xxxxxxxx>

The contents of this message are mine personally and
do not necessarily reflect any position of the
Government or the National Oceanic and Atmospheric Administration.
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    • From: Sean Arms

• References:
  • [netcdf-java] Difference between netcdfJava 4.6.5 and 4.6.6
    • From: Bob Simons - NOAA Federal