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[IDV #GAI-830760]: Is there a 'turnkey' application that displays trajectory plots?



Jim,

Thanks for the information. I'll start digging into this but (un)fortunately I
am out for a couple weeks so it will be a little while before I get back to you.
Thanks for your patience.

Best,

Unidata IDV Support

> Hi.
> 
> I was using the nightly release IDV 5.0u1 from August 5. I've uploaded
> one version of the file I was trying to view, which is using the
> 'continuous ragged array' form. The name of the file is
> cfs_ew_850hpa_1993_AFR.nc. I have the same data stored using the
> 'multidimensional array' form, but it was too big to upload (the upload
> folder quota was exceeded).
> 
> I hope this is helpful. I'm actually trying to validate the file by
> verifying that some neutral 3rd party application properly handles it,
> so there are no guarantees that what I have is correct!
> 
> Grace and peace,
> 
> Jim
> 
> On 8/6/14, 6:22 PM, Unidata IDV Support wrote:
> > Jim,
> >
> > First off, what version of the IDV are you looking at? Only the nightly 
> > release
> > or IDV 5.0u1 (which has not been released yet, but very soon) has this new
> > trajectory feature. Secondly, can you upload the file in question to
> > http://motherlode.ucar.edu/repository/alias/idvupload and let us know when 
> > it is
> > there?  I am eager to see some real trajectory data since everything I have
> > experimented with thus far has been canned.  Moreover, there are other
> > researchers wanting this feature so real data will be useful for me.
> >
> > Thanks for you help.
> >
> > Best,
> >
> > Unidata IDV Support
> >
> >> Hi.
> >>
> >> That is good timing! I tried opening my file and received this error:
> >>
> >> Problem opening file:/Users/jbiard/Desktop/For
> >> Hilawe/cfs_ew_850hpa_1993_AFR.nc
> >> java.lang.IllegalArgumentException: Type is float,
> >> must be double
> >> Type is float, must be double
> >>
> >> This is interesting, since there is no constraint on variable type in CF.
> >>
> >> Grace and peace,
> >>
> >> Jim
> >>
> >> On 8/6/14, 2:53 PM, Unidata IDV Support wrote:
> >>> Jim,
> >>>
> >>> Good timing.
> >>>
> >>> As of IDV 5u1 which will be release this week, the IDV can now handle 
> >>> multiple
> >>> trajectories in one CF-compliant file. When wanting to view these data, 
> >>> select a
> >>> Data Source Type of "Trajectory Sounding Files".  You will have to build 
> >>> the
> >>> trajectory file in a CF compliant manner as described here:
> >>> http://www.unidata.ucar.edu/blogs/developer/en/entry/ipynb_cookbooks_to_create_cf.
> >>>
> >>> This new IDV functionality should still be considered beta quality and 
> >>> there
> >>> could very well still be problems. Please keep us up-to-date on your 
> >>> progress.
> >>>
> >>> Best,
> >>>
> >>> Unidata IDV Support
> >>>
> >>>
> >>>> Jim
> >>>>
> >>>> We plot trajectories here.
> >>>>
> >>>> http://www.esrl.noaa.gov/psd/cgi-bin/data/trajtool/traj.pl
> >>>>
> >>>> We use Fortran code to calculate the trajectories, stored the output in
> >>>> nertCDF and then use a NCL script to plot them. The script works pretty
> >>>> well (except where trajectories pass over 0E). We looked into CF 
> >>>> complaint
> >>>> netCDF trajectories standard a while back but didn't implement them. Part
> >>>> of the reason was that the code output into it's own netCDF format. 
> >>>> Still,
> >>>> we could have reread and stored the data. I think we would have needed to
> >>>> change how time was handled. Also, times went backward for back
> >>>> trajectories and we weren't clear if that was okay.
> >>>>
> >>>> We may try to transition to CF at some point.
> >>>>
> >>>> Cathy Smith
> >>>>
> >>>>
> >>>> On 8/6/14 8:42 AM, Jim Biard wrote:
> >>>>
> >>>> Hi.
> >>>>
> >>>> We are working on building a CF-compliant trajectory dataset. I'd like to
> >>>> be able to verify correctness by using an existing application to plot 
> >>>> the
> >>>> trajectories, but I can't seem to find any applications that are
> >>>> "trajectory aware".  Any suggestions?
> >>>>
> >>>> Grace and peace,
> >>>>
> >>>> Jim
> >>>> --
> >>>> CF-metadata mailing
> >>>> address@hidden://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata
> >>>>
> >>>> --
> >>>> ----------------------------------------------
> >>>>
> >>>> Emails about data/webpages may get quicker responses from emailing
> >>>> address@hidden
> >>>>
> >>>> _______________________________________________
> >>>> CF-metadata mailing list
> >>>> address@hidden
> >>>> http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata
> >>>>
> >>> Ticket Details
> >>> ===================
> >>> Ticket ID: GAI-830760
> >>> Department: Support IDV
> >>> Priority: Normal
> >>> Status: Closed
> > Ticket Details
> > ===================
> > Ticket ID: GAI-830760
> > Department: Support IDV
> > Priority: Normal
> > Status: Closed


Ticket Details
===================
Ticket ID: GAI-830760
Department: Support IDV
Priority: Normal
Status: Open


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