[netCDFJava #BUF-901516]: Error in NEXRAD Level 2 decoder in netcdf-java library versions up to and including 4.3.8 Beta

Hi Harry:

What are you using to figure out what the real time coordinate values should be 
?

John

> > What Is title_msecs?   I don't see it  There is no such thing.  I just
> > ran the decoder on the 2012/04/11 1321 GMT volume for KLGX.   I have
> > included the ncdump of the header.
> >
> 
> It is from the volume scan header of each file. We didn't modify or re 
> interpolate this value.
> 
> Yuan
> > So what then is the purpose of the units attribute for timeR_HI?   Is it
> > just junk?
> 
> Each value of parameter timeR_HI need this unit to interpolate its value.
> 
> Yuan
> >
> >
> >
> > On 04/11/12 12:13, Unidata netCDF Java Support wrote:
> > >>> It appears in every one I look at.
> > >>>
> > >>> On 04/11/12 09:10, Unidata netCDF Java Support wrote:
> > >>>
> > >>>>> The NetCDF file produced by Netcdf-Java from Nexrad Level 2 files 
> > >>>>> lists
> > >>>>> the time units for the data like this example:
> > >>>>>
> > >>>>> timeR_HI:units = "msecs since 2012-04-05T16:26:52Z" ;
> > >>>>>
> > >>>>>
> > >> This is the time from the global attribute: time_coverage_start.
> > >>
> > >>
> > > And further more, this attribute is from title_msecs which is time of 
> > > data in milliseconds of day past  midnight (UTC)
> > >
> > >
> > > Yuan
> > >
> > >> Yuan
> > >>
> > >>>>> But the actually times in the file are really msecs after midnight on
> > >>>>> that date, i.e. either the units should be:
> > >>>>>
> > >>>>> timeR_HI:units = "msecs since 2012-04-05T00:00:00Z" ;
> > >>>>>
> > >>>>> or the times should really be msec after the time specified in the 
> > >>>>> units
> > >>>>> attribute.
> > >>>>>
> > >>>>> --
> > >>>>> Dr. Harry Edmon                        E-MAIL: address@hidden
> > >>>>> 206-543-0547 FAX: 206-543-0308
> > >>>>> Director of IT, College of the Environment and
> > >>>>> Director of Computing, Dept of Atmospheric Sciences
> > >>>>> University of Washington, Box 351640, Seattle, WA 98195-1640
> > >>>>>
> > >>>>>
> > >>>>>
> > >>>>>
> > >>>> Hi Harry,
> > >>>>        Are you questioning about the specific file or station? Could 
> > >>>> you provide the name and/or station of the file?
> > >>>>
> > >>>>
> > >>>> Thanks,
> > >>>>
> > >>>> Yuan
> > >>>>
> > >>>> Ticket Details
> > >>>> ===================
> > >>>> Ticket ID: BUF-901516
> > >>>> Department: Support netCDF Java
> > >>>> Priority: High
> > >>>> Status: Open
> > >>>>
> > >>>>
> > >>>>
> > >>>
> > >>> --
> > >>> Dr. Harry Edmon                        E-MAIL: address@hidden
> > >>> 206-543-0547 FAX: 206-543-0308
> > >>> Director of IT, College of the Environment and
> > >>> Director of Computing, Dept of Atmospheric Sciences
> > >>> University of Washington, Box 351640, Seattle, WA 98195-1640
> > >>>
> > >>>
> > >>>
> > >>
> > >
> > > Ticket Details
> > > ===================
> > > Ticket ID: BUF-901516
> > > Department: Support netCDF Java
> > > Priority: High
> > > Status: Closed
> > >
> > >
> >
> >
> > --
> > Dr. Harry Edmon                        E-MAIL: address@hidden
> > 206-543-0547 FAX: 206-543-0308
> > Director of IT, College of the Environment and
> > Director of Computing, Dept of Atmospheric Sciences
> > University of Washington, Box 351640, Seattle, WA 98195-1640
> >
> >
> >
> 


Ticket Details
===================
Ticket ID: BUF-901516
Department: Support netCDF Java
Priority: High
Status: Closed