[IDV #WEO-921853]: What's wrong with this

I dont think theres anything wrong with the union aggrgation. I assume the 
missing lat/lon screw things up. BTW, theres no problem with non-monotonic 2D 
coordinate variables. Perhaps something with IDV flow vectors? Im returning 
this to IDV support.


> The 2nd attachment.
> 
> On Wed, Jan 21, 2009 at 11:33 AM, Rich Signell <address@hidden> wrote:
> > Dave,
> >
> > Yes, you do have missing lon/lat values.  I don't think that's the
> > problem.  I think the problem is (and I'm trusting that Don & Jeff
> > will correct me if I'm wrong) IDV uses a simplistic mapping from
> > lon,lat to i,j that requires that the longitude and latitude change
> > monotonically proceeding along the I and J directions.    This
> > certainly isn't true for your grid, as shown in the zoomed in section
> > of your grid (1st attachment).    When we plot the first field of
> > temperature from the surface in IDV, IDV doesn't complain, but
> > certainly doesn't plot the field correctly (2nd attachment).   Matlab
> > (left panel) has no problem, but IDV (right panel) gets all confused.
> >
> > -Rich
> >
> >
> > On Wed, Jan 21, 2009 at 9:46 AM, Dave Runnels <address@hidden> wrote:
> >> Rich, I think I'm confused... We obviously have 'missing' lat lons because
> >> of the file that you created with Ganesh that has the 'good' lat/lons. So
> >> don't we expect missing lat/lons?
> >>
> >> Sorry for being dense about this.
> >>
> >> -----Original Message-----
> >> From: address@hidden [mailto:address@hidden] On Behalf Of Rich
> >> Signell
> >> Sent: Wednesday, January 21, 2009 9:42 AM
> >> To: address@hidden
> >> Subject: Fwd: [IDV #WEO-921853]: What's wrong with this
> >>
> >> Dave,
> >>
> >> Can you try putting non-missing values in lon/lat?
> >>
> >> -Rich
> >>
> >>
> >> ---------- Forwarded message ----------
> >> From: Unidata IDV Support <address@hidden>
> >> Date: Tue, Jan 20, 2009 at 3:32 PM
> >> Subject: [IDV #WEO-921853]: What's wrong with this
> >> To: address@hidden
> >> Cc: address@hidden
> >>
> >>
> >> Hi Rich-
> >>
> >>> Dave Runnels and I were trying to get IDV going with this NcML file
> >>> and are striking out on plotting a layer of velocity vectors from the
> >>> 3D fields.
> >>>
> >>> We tried to choose just 1 timestep and 1 level, and used the formula
> >>> "make flow vectors from grid-relative u,v" and we get this:
> >>
> >> This is a problem creating the domain (lon,lat,alt).  If I use the netCDF
> >> Tools to look at the data, the lat and lon variables have lots of missing
> >> values in them.  The domain has to have non-missing values for it's
> >> coordinates (like coordinate variables can't have missing values).
> >>
> >> I'm going to transfer this to John in case there's something amiss in the
> >> aggregation.
> >>
> >> Don
> >>> isad.SetException: Gridded3DSet: samples values may not be missing at
> >>> visad.Gridded3DSet.<init>(Gridded3DSet.java:97)
> >>> at visad.GriddedSet.create(GriddedSet.java:218)
> >>> at
> >>> ucar.unidata.data.grid.GeoGridAdapter.getInitialSpatialDomain(GeoGridA
> >>> dapter.java:858) at
> >>> ucar.unidata.data.grid.GeoGridAdapter.getSpatialDomainSet(GeoGridAdapt
> >>> er.java:387) at
> >>> ucar.unidata.data.grid.GeoGridAdapter.getFlatField(GeoGridAdapter.java
> >>> :1105) at
> >>> ucar.unidata.data.grid.GeoGridAdapter.makeSequence(GeoGridAdapter.java
> >>> :1297) at
> >>> ucar.unidata.data.grid.GeoGridAdapter.getSequence(GeoGridAdapter.java:
> >>> 1047) at
> >>> ucar.unidata.data.grid.GeoGridDataSource.makeFieldImpl(GeoGridDataSour
> >>> ce.java:1525) at
> >>> ucar.unidata.data.grid.GeoGridDataSource.getDataInner(GeoGridDataSourc
> >>> e.java:1203) at
> >>> ucar.unidata.data.DataSourceImpl.getData(DataSourceImpl.java:2112)
> >>> at
> >>> ucar.unidata.data.DirectDataChoice.getData(DirectDataChoice.java:332)
> >>> at
> >>> ucar.unidata.data.DerivedDataChoice.setData(DerivedDataChoice.java:610
> >>> ) at
> >>> ucar.unidata.data.DerivedDataChoice.collectOperands(DerivedDataChoice.
> >>> java:562) at
> >>> ucar.unidata.data.DerivedDataChoice.getData(DerivedDataChoice.java:709
> >>> ) at ucar.unidata.data.DataChoice.getData(DataChoice.java:633)
> >>> at ucar.unidata.data.DataInstance.getData(DataInstance.java:239)
> >>> at ucar.unidata.data.DataInstance.getData(DataInstance.java:203)
> >>> at
> >>> ucar.unidata.data.grid.GridDataInstance.init(GridDataInstance.java:204
> >>> ) at
> >>> ucar.unidata.data.grid.GridDataInstance.<init>(GridDataInstance.java:1
> >>> 61) at
> >>> ucar.unidata.data.grid.GridDataInstance.<init>(GridDataInstance.java:1
> >>> 42) at
> >>> ucar.unidata.idv.control.PlanViewControl.doMakeDataInstance(PlanViewCo
> >>> ntrol.java:1225) at
> >>> ucar.unidata.idv.control.DisplayControlImpl.initializeDataInstance(Dis
> >>> playControlImpl.java:2949) at
> >>> ucar.unidata.idv.control.DisplayControlImpl.setData(DisplayControlImpl
> >>> .java:2931) at
> >>> ucar.unidata.idv.control.PlanViewControl.setData(PlanViewControl.java:
> >>> 512) at
> >>> ucar.unidata.idv.control.FlowPlanViewControl.setData(FlowPlanViewContr
> >>> ol.java:187) at
> >>> ucar.unidata.idv.control.PlanViewControl.init(PlanViewControl.java:421
> >>> ) at
> >>> ucar.unidata.idv.control.DisplayControlImpl.init(DisplayControlImpl.ja
> >>> va:1259) at
> >>> ucar.unidata.idv.control.DisplayControlImpl.init(DisplayControlImpl.ja
> >>> va:966) at
> >>> ucar.unidata.idv.ControlDescriptor.initControl(ControlDescriptor.java:
> >>> 979) at
> >>> ucar.unidata.idv.ControlDescriptor$1.run(ControlDescriptor.java:904)
> >>> at ucar.unidata.util.Misc$3.run(Misc.java:1038)
> >>>
> >>>
> >>> Could it be averaging a missing value of "u" with a non-missing value
> >>> of "v" or something?
> >>> --
> >>> Dr. Richard P. Signell   (508) 457-2229
> >>> USGS, 384 Woods Hole Rd.
> >>> Woods Hole, MA 02543-1598
> >>>
> >>>
> >>
> >>
> >> Ticket Details
> >> ===================
> >> Ticket ID: WEO-921853
> >> Department: Support netCDF Java
> >> Priority: Normal
> >> Status: Open
> >>
> >>
> >>
> >>
> >> --
> >> Dr. Richard P. Signell   (508) 457-2229
> >> USGS, 384 Woods Hole Rd.
> >> Woods Hole, MA 02543-1598
> >>
> >>
> >
> >
> >
> > --
> > Dr. Richard P. Signell   (508) 457-2229
> > USGS, 384 Woods Hole Rd.
> > Woods Hole, MA 02543-1598
> >
> 
> 
> 
> --
> Dr. Richard P. Signell   (508) 457-2229
> USGS, 384 Woods Hole Rd.
> Woods Hole, MA 02543-1598
> 
> 


Ticket Details
===================
Ticket ID: WEO-921853
Department: Support netCDF Java
Priority: Normal
Status: Open