[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[THREDDS #FIZ-452444]: Can NcML tackle this?

This archive contains answers to questions sent to Unidata support through mid-2025. Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated. For the most up-to-date information on the use of NSF Unidata software and data services, please consult the Software Documentation first.

  • Subject: [THREDDS #FIZ-452444]: Can NcML tackle this?
  • Date: Thu, 30 Apr 2009 11:20:42 -0600
> NetCDF-Java Gurus,
> 
> I may have hit the first ocean model that I can't use NcML to CF-ize.
> 
> Output from the Harvard Ocean Prediction System (example URL:
> http://coast-enviro.er.usgs.gov/thredds/dodsC/models/share/hops.nc.dds
> 
> stores both lon and lat in a single variable, and u,v in a single
> variable, by adding an extra dimension.
> So u and v is stored in:
> 
> Float32 vtot[time = 17][vlat = 138][vlon = 107][outlev = 30][vector = 2];
> 
> Can we use NcML to split u [vector = 1] and v [vector = 2] into
> separate variables?
> 
> If not, would this be (a) easy (2 hours); (b); medium (2 days); or (c)
> difficult (2 months)?

the best thing is to write a CoordSysBuilder to fix the problem. AWIPS files 
have same problem, thats how we fix them. 

I will eventually add a feature for NcML to split data like this, but its not 
possible now.

Its a few hours work by a java programmer. is there someone who can do it there?


> 
> --
> Dr. Richard P. Signell   (508) 457-2229
> USGS, 384 Woods Hole Rd.
> Woods Hole, MA 02543-1598
> 
> 


Ticket Details
===================
Ticket ID: FIZ-452444
Department: Support THREDDS
Priority: Normal
Status: Open