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[IDV #BRF-520982]: Calculation of isentropic potential vorticity breaks

> Full Name: Lech Lobocki
> Email Address: address@hidden
> Organization: Warsaw University of Technology
> Package Version: 2.8u1 build date:2010-02-02 22:30 UTC
> Operating System: Linux
> Hardware: Java: home: /opt/IDV_2.8u1/jre version: 1.6.0_17 j3d:1.5.2 fcs 
> (build4)
> Description of problem: The problem occured when using different files, also 
> on different machines
> (all Intel, running Fedora 12, however), with two versions of IDV: 2.8u1 and 
> 2.9.
> After attempt to calculate isentropic potential vorticity (using add display 
> - 3D grid -derived)
> and contour-plan-view, the program gets busy for some time (apparently loading
> the data), than breaks with:
> Creating display: Contour Plan View
> org.python.core.PyException
> An example file whete this happens is
> http://www.unidata.ucar.edu/software/netcdf/examples/cami_0000-09-01_64x128_L26_c030918.nc
> ******************
> Stack trace:
> Traceback (innermost last):
> File "<string>", line 1, in ?
> at 
> ucar.unidata.data.grid.DerivedGridFactory.createPressureGridFromDomain(DerivedGridFactory.java:2056)
> at 
> ucar.unidata.data.grid.DerivedGridFactory.createIPV(DerivedGridFactory.java:1879)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
> at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
> at java.lang.reflect.Method.invoke(Unknown Source)
> visad.VisADException: visad.VisADException: can't create pressure from grid 
> domain
Hi Lech,
       The dataset you were try to dispaly is in 
atmosphere_hybrid_sigma_pressure_coordiante, and the IDV does the calculation 
of the isentropic potential vorticity and some other derived fields in the 
pressure coordinate system. So you can not display some of the derived fields 
in this dataset.


Ticket Details
Ticket ID: BRF-520982
Department: Support IDV
Priority: Normal
Status: Closed

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