[IDV #ZNZ-304595]: time format

Hi-

> The file is 1.65GB.

Yeah, that's pretty big. ;-)

> I am also trying something, adding the units "YYYYMMDDHH" to the vector
> time.

That's not a valid udunits compatible or internationally recognized
unit, so it probably won't work.  Are you generating the file
or is this one that someone else gave you.  If you have control
over generating the file, then try storing the time as a valid
number with units.

Don Murray

> 2008/7/3 Unidata IDV Support <address@hidden>:
> 
> > Hi-
> >
> > > > > Full Name: Aude Valade
> > > > > Email Address: address@hidden
> > > > > Organization: UC Davis, department of Atmospheric Sciences
> > > > > Package Version: 2.5 build date:2008-05-08 07:05 UTC
> > > > > Operating System: Windows XP
> > > > > Hardware: Java: home: C:\Program Files\Java\jre1.6.0_02 version:
> > 1.6.0_02
> > > > j3d:1.3.2 fcs (build12)
> > > > > Description of problem: Hi,
> > > > > I have a .nc file, supposedly representing diabatic heating data. The
> > > > dimensions are lat, lon, time where time is in the format YYYYMMDDHH
> > > > (example 1979010100 is the first, 2007111218 is the last one. )
> > > >
> > > > Is this stored as a character string, or an integer?  If the latter,
> > how
> > > > are the
> > > > units defined?
> > > >
> > > It is stored as a double, the ncl_filedump of the file returns:
> >
> > This is problematic.  There is no physical unit that can be specified to
> > turn
> > YYYYMMDDHH into a time since it is an artificial representation of a time.
> > It needs to be something like "hours since 1979-01-01 00:00:00" to be able
> > to
> > convert to a time with the appropriate values.
> >
> > > filename:       diabatic_heating
> > > path:   diabatic_heating.nc
> > > file global attributes:
> > > creation_date : Mon Jun  9 11:04:02 PDT 2008
> > > Conventions : None
> > > source_file : original-file.nc
> > > title : NCL Efficient Approach to netCDF Creation
> > > long_name : Diabatic Heating
> > > dimensions:
> > > time = 42165  // unlimited
> > > lat = 73
> > > lon = 144
> > > variables:
> > > double time ( time )
> > > _FillValue :   -999
> > >
> > > float lat ( lat )
> > > La1 :  90
> > > Lo1 :   0
> > > La2 :  -90
> > > Lo2 :  -2.5
> > > Di :   2.5
> > > Dj :   2.5
> > > units :        degrees_north
> > > GridType :     Cylindrical Equidistant Projection Grid
> > > long_name :    latitude
> > >
> > > float lon ( lon )
> > > La1 :  90
> > > Lo1 :   0
> > > La2 :  -90
> > > Lo2 :  -2.5
> > > Di :   2.5
> > > Dj :   2.5
> > > units :        degrees_east
> > > GridType :     Cylindrical Equidistant Projection Grid
> > > long_name :    longitude
> > >
> > > float diabatic_heating ( time, lat, lon )
> > > center :       Japanese Meteorological Agency - Tokyo (RSMC)
> > > long_name :    Diabatic Heating
> > > units :        W/m2
> > > _FillValue :   -999
> > > level_indicator :      1
> > > gds_grid_type :        0
> > > parameter_table_version :      3
> > > parameter_number :     218
> > > forecast_time :        6
> > > initial_time : 01/01/1979 (00:00)
> > >
> > >
> > >
> > > >
> > > >
> > > > > However, when I display the data in IDV, the time is given in a
> > strange
> > > > format: 0063-09-18 05:01:46Z for example.
> >
> > Unfortunately, we are parting this wrongly, thus the bad time.
> >
> > > > > In order to understand better what is going on I tried to display
> > time
> > > > series/probe but I got this error message.
> > > >
> > > > Can you provide a sample file?  If it's big, can you put it on a web or
> > FTP
> > > > site where I can download it instead of sending it as an attachment?
> > > >
> > > I do not have a FTP, do you have one?
> >
> > We don't.  How big is the file?
> >
> > Don Murray
> >
> > Ticket Details
> > ===================
> > Ticket ID: ZNZ-304595
> > Department: Support IDV
> > Priority: Normal
> > Status: Open
> >
> >
> 
> 


Ticket Details
===================
Ticket ID: ZNZ-304595
Department: Support IDV
Priority: Normal
Status: Open