[IDV #OBG-717641]: CF-compliant trajectories (again)

> Hi Adam,
> 
> Nice to hear from you again. One immediate problem that stands out is the 
> units
> are inverted on the latitude and longitude variables. It should be
> "degrees_north" for latitude and "degrees_east" for longitude. I'd also 
> suggest
> reading a previous blog entry on the topic. (I know the example is in Python,
> but it should be fairly similar to IDL).
> 
> http://www.unidata.ucar.edu/blogs/developer/entry/ipynb_cookbooks_to_create_cf
> http://nbviewer.jupyter.org/github/julienchastang/py-netcdf-cf-cookbooks/blob/master/traj.ipynb
> 
> Try to follow that example as closely as possible. I am at a conference this
> week and also taking a bit of vacation, but I'll try to help you if you get
> stuck again.
> 
> Best,
> 
> Unidata IDV Support
> 
> > Hey guys,
> >
> > I'm resurrecting this issue from back in 2014.  I have a (new) NetCF-4, 
> > CF-compliant trajectory file that I can't get into IDV.  I've done my best 
> > (within reason) to match the format to that of the example traj.nc file, 
> > but to no avail.  I've tried both the "track files" and "trajectory 
> > sounding files" source types.  Incidentally, I can only read in the traj.nc 
> > as a "trajectory sounding file" but, based on previous correspondence, this 
> > isn't surprising.  In my last correspondence on this subject, the fix (for 
> > a different file..that I can't find) was to add in a data variable (it was 
> > previously just position variables).  This is not an issue with the new 
> > file.
> >
> > As before, I'm creating this in IDL.  Previously, using Python was 
> > suggested but I'm "not there yet".
> >
> > Any help would, as always, be greatly appreciated!!!
> >
> > - Adam
> >

Adam,

One easy fix to your nc file is to add coordinates attribute to each variable 
(RH, PRES,.... ) like this: <ncml:attribute name="coordinates" value="TIME LON 
LAT Z" />. 

This should fix your problem.

Yuan
> >
> 


Ticket Details
===================
Ticket ID: OBG-717641
Department: Support IDV
Priority: Normal
Status: Closed
===================
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