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[IDV #XHK-934272]: use of time coord in netcdf

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  • Subject: [IDV #XHK-934272]: use of time coord in netcdf
  • Date: Thu, 19 Jan 2012 15:48:12 -0700
Greetings Stu,

Myear since 2001-01-01 should work fine. The key is that the reference date be 
in a standard format that UDUNITS can recognize. An general example would be:

<some time unit> since YYYY-MM-DD HH:MM:SS.S GMT_OFFSET(+/- offset)

So, something like

days since 2002-12-01 00:00:00.0 +6:00

should work out just fine.

Cheers,

Sean

> Thanks,
> 
> yes sounds natural netcdf never has understood geology.
> 
> Does Myear since 2001-01-01 work?
> 
> 
> Stu
> >
> > I'm not exactly sure when the changed occurred, but you will need to change 
> > the unit on your time variable from
> >
> > "Myear"
> >
> > to
> >
> > "Myear since 0001-01-01"
> >
> > It looks like the assumption would be made that a time variable with unit 
> > Myear was relative to 0001-01-01 0Z, but now a reference date is required 
> > as part of the unit.
> >
> > Cheers!
> >
> > Sean
> >
> >
> >>Full Name: stuart wier
> >>Email Address: address@hidden
> >>Organization: UNAVCO
> >>Package Version: 3.0 using 2.x bundle
> >>Operating System: linux x86 32b
> >>Hardware:
> >>Description of problem: Hi Folks,
> >>
> >>A netcdf file with this header works in IDV 2.8 with the UNAVCO IDV plugin, 
> >>to make time animated isosurfaces.  In IDV 3 I get an error that the netcdf 
> >>variable name "time" is not recognized.
> >>
> >>Please tell me the new magic word or other fix.
> >>
> >>The complete data file is online
> >>http://geon.unavco.org/unavco/ASU/AM_T_intp_2200_3827.nc
> >>
> >>Stu
> >>
> >>netcdf AM_T_intp {
> >>
> >>dimensions:
> >>depth = 49 ;
> >>latitude = 181 ;
> >>longitude = 361 ;
> >>time = UNLIMITED ;
> >>variables:
> >>double time (time) ;
> >>time:units = "Myear" ;
> >>time:standard_name = "time" ;
> >>float depth(depth) ;
> >>depth:units = "kilometer" ;
> >>depth:positive = "up" ;
> >>float latitude(latitude) ;
> >>latitude:long_name = "Latitude, positive north" ;
> >>latitude:units = "degrees_north" ;
> >>latitude:standard_name = "latitude" ;
> >>float longitude(longitude) ;
> >>longitude:long_name = "Longitude, positive East" ;
> >>longitude:units = "degrees_east" ;
> >>longitude:standard_name = "longitude" ;
> >>float Trcb(time, depth, latitude, longitude) ;
> >>Trcb:long_name = "temperature frac of core boundary temp, 1 to 0" ;
> >>Trcb:valid_range = 0.0f, 1.0f ;
> >>Trcb:units = "None" ;
> >>
> >>
> >>
> >
> >
> >
> > Ticket Details
> > ===================
> > Ticket ID: XHK-934272
> > Department: Support IDV
> > Priority: Normal
> > Status: Open
> >
> 
> 


Ticket Details
===================
Ticket ID: XHK-934272
Department: Support IDV
Priority: Normal
Status: Open