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[IDV #QQP-632804]: displaying IPV from model data



Hi Bill-

This bug was finally fixed in the nightly build.  Only took 2 years. ;-)

Don

> Full Name: bill fingerhut
> Email Address: address@hidden
> Organization: lyndon state college retired
> Package Version: 2.5 build date:2008-05-08 07:05 UTC
> Operating System: Windows XP
> Hardware: Java: home: C:\Program Files\IDV_2.5\jre version: 1.5.0_11 
> j3d:1.3.2 fcs (build12)
> Description of problem: Selecting 'all levels' did get me past the error 
> message. I now have a display.
> BTW, I defaulted to the 1000mb level although I did not specify a level. That 
> must have
> been left over from another day. Once I specified all levels, it worked.
> 
> So, I proceeded to compare IPV at the same time and 250 mb
> between the NAM and GFS. The results look quite similar,
> except that the values from the GFS are negative. They should be positive in 
> almost all
> situations. (Hopefully, the current state shows this.) Any thoughts on why ?
> 
> Bill
> 
> 
> -----Original Message-----
> From: Unidata IDV Support [mailto:address@hidden
> Sent: Fri 6/6/2008 12:24 PM
> To: Fingerhut, William A @ LSC
> Cc: address@hidden
> Subject: [IDV #QQP-632804]: displaying IPV from model data
> 
> Hi Bill-
> 
> > Full Name: bill fingerhut
> > Email Address: address@hidden
> > Organization: lyndon state college
> > Package Version: 2.5 build date:2008-05-08 07:05 UTC
> > Operating System: Windows XP
> > Hardware: Java: home: C:\Documents and Settings\waf01060\Program 
> > Files\IDV_2.5\jre version: 1.5.0_11 j3d:1.3.2 fcs (build12)
> > Description of problem: Creating display: Contour Plan View
> > org.python.core.PyException
> >
> > I've encountered a little problem displaying IPV from model data.
> >
> > First I chose a dataset: Latest NCEP NAM CONUS 80 km
> > from 
> > http://motherlode.ucar.edu:8080/thredds/dodsC/model/NCEP/NAM/CONUS_80km/NAM_CONUS_80km_20080514_0000.grib1
> > Then I entered the dataset properties, and chose one time - the first.
> > Then from the menu: Data --> Latest NCEP NAM CONUS 80 km --> 3D grid -->
> > Derived --> Isentropic Potential Vorticity --> Contour Plan --> Ok. And an 
> > error occurs.
> >
> > I have a bundle that works okay, so I was curious about the differences. It 
> > uses the
> > method: DerivedGridFactory.createIPV (Temperature, Absolute_vorticity). So, 
> > I entered
> > this call in: Data --> Formulas --> Grids --> Define a grid diagnostic, and 
> > it worked fine.
> > So, the method seems okay; maybe there is a problem using the menu to call 
> > this
> > method ?
> 
> The problem is that in the latest versions of the IDV, the default is to
> select a particular level for plan vies, not the read the entire volume.
> When you select the Isentropic Potential Vorticity, make sure the Level is
> set to All Levels, or select a range of levels.  It would work automatically
> for cross sections and isosurfaces because they use multiple levels (All by
> default).
> 
> When you use the formula, the default is to use all levels, regardless of
> the display.  We'll look into having formulas that need multiple levels
> specify so in the XML so the user won't get caught by this.
> 
> Don
> > ******************
> > Stack trace:
> > Traceback (innermost last):
> > File "<string>", line 1, in ?
> > at visad.FlatField.derivative(FlatField.java:4044)
> >
> > at visad.FlatField.derivative(FlatField.java:4485)
> >
> > at 
> > ucar.unidata.data.grid.DerivedGridFactory.partial(DerivedGridFactory.java:2191)
> >
> > at 
> > ucar.unidata.data.grid.DerivedGridFactory.createIPV(DerivedGridFactory.java:1782)
> >
> > at 
> > ucar.unidata.data.grid.DerivedGridFactory.createIPV(DerivedGridFactory.java:1708)
> >
> > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> >
> > at 
> > sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> >
> > at 
> > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> >
> > at java.lang.reflect.Method.invoke(Method.java:585)
> >
> >
> > visad.VisADException: visad.VisADException: derivative: d_partial_s not in 
> > domain or reference
> >
> >
> >
> 
> 
> Ticket Details
> ===================
> Ticket ID: QQP-632804
> Department: Support IDV
> Priority: Normal
> Status: Open
> 
> 
> 
> 


Ticket Details
===================
Ticket ID: QQP-632804
Department: Support IDV
Priority: Critical
Status: Closed


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