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

[IDV #YZK-803896]: Ticket# BRK-528772

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 Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated.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: [IDV #YZK-803896]: Ticket# BRK-528772
  • Date: Tue, 23 Sep 2014 13:27:17 -0600
> IDV Support,
> 
> I have uploaded the WRF file.  In addition, I have attached a .gif image here 
> showing how the coast lines don’t match.
> 
> Thanks for your help,
> 
> David Siuta

Hi David,
       There is nothing wrong with the IDV or your dataset. Inside this nc 
dataset, there are two set projections, polar stereographic and lat/lon. When 
you load a 2D variable, it is using lat/lon projection. 
If you want to see the same projection for 3D variable, you can turn off the 
auto set projection under Projections > Auto-set Projection before creating the 
display. If you want to switch between these two 
projections, right click on the legend of one of  display and select: View > 
Use Grid Projection. The IDV will do the work of converting the projection 
automatically for you.


Yuan
> 
> address@hidden
> 
> On Sep 23, 2014, at 10:20 AM, Unidata IDV Support <address@hidden> wrote:
> 
> > David,
> >
> > Sorry for the delayed response.
> >
> > Please upload your WRF sample data here:
> >
> > http://motherlode.ucar.edu/repository/alias/idvupload
> >
> > and let us know when it has been uploaded.
> >
> > Best,
> >
> > Unidata IDV Support
> >
> >> IDV support,
> >>
> >> I have done some research in to my problem (Ticket BRK-528772) and found
> >> that the standard longitude is not the problem.  It is actually the map
> >> projection used by WRF that doesn’t work well with IDV.  Any WRF runs
> >> I have done using the polar stereographic  map projection do not match
> >> the background map supplied in IDV when I try to view the output in IDV
> >> (as well as the latitude and longitude of the WRF grid does not match
> >> the background map).  To test this out I changed the WRF projection to
> >> Lambert Conformal Conic and reran WRF and no matter what the standard
> >> longitude was, the WRF grid was able to perfectly match the IDV
> >> background map.  Even though switching WRF to the Lambert projection has
> >> solved this problem temporarily, I have a lot of output in the Polar
> >> Stereographic projection and would like to be able to use IDV to view
> >> some of the output.  Do you have any ideas on how to fix this?
> >>
> >> Thanks,
> >>
> >> David Siuta
> >> address@hidden
> >>
> >> Weather Forecast Research Team
> >> University of British Columbia
> >> Vancouver, BC Canada
> >>
> >
> >
> > Ticket Details
> > ===================
> > Ticket ID: YZK-803896
> > Department: Support IDV
> > Priority: Normal
> > Status: Closed
> 
> 
> 

Ticket Details
===================
Ticket ID: YZK-803896
Department: Support IDV
Priority: Normal
Status: Closed