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Hi Mark- > I have two entries for aliases of u and v: > u: u_10m_gr and u_gr_p > v: v_10m_gr and v_gr_p > I had the order of these aliases mixed in the alias editor. In one the > 10m was before the pressure surface, and vice versa. When I corrected > the alias editor so they occurred in the same order, all was fine. Yeah, that's a tricky one. Another way to do this would be to create a Parameter Group where you specify what goes with what. Use the Tools->Parameter Groups Editor menu. That way there is no abmiguity. > I was correct in that it was user error. I was incorrect as to where > the user error was located. It was located in the operation of IDV > instead of the creation of the CF files. At least you found the error of your ways. ;-) Don > Unidata IDV Support wrote: > > Hi Mark- > > > >> Full Name: Mark Seefeldt > >> Email Address: address@hidden > >> Organization: University of Colorado > >> Package Version: 2.6u1 build date:2009-01-24 20:38 UTC > >> Operating System: Linux > >> Hardware: Java: home: /usr/local/idv/IDV_2.6u1/jre version: 1.6.0_11 > >> j3d:1.5.2 fcs (build4) > >> Description of problem: Creating display: Wind Barb Plan View > >> org.python.core.PyException > >> > >> The problem has to be in my data file, but not sure as to where or what. > >> The data file can be downloaded at: > >> http://foehn.colorado.edu/seefeldt/mm5post.nc > >> > >> I have aliased the u_10m_gr v_10m_gr wind values to u and v in IDV. > >> When I try to do a plan view of wind barbs, I get this error. > > > > Does Flow Vectors show up as a derived field in the Fields? If so, > > what does is say that it is using to create them. When I add in the > > aliases, I see: > > > > Flow Vectors (from u_10m_gr & v_10m_gr) > > > > Is that what you are getting? > > > > I don't have any problem displaying them though. > > > > Don Murray > > > >> ****************** > >> Stack trace: > >> Traceback (innermost last): > >> File "<string>", line 1, in ? > >> at visad.FieldImpl.combine(FieldImpl.java:1064) > >> at visad.FieldImpl.combine(FieldImpl.java:998) > >> at > >> ucar.unidata.data.grid.DerivedGridFactory.combineGrids(DerivedGridFactory.java:995) > >> at > >> ucar.unidata.data.grid.DerivedGridFactory.combineGrids(DerivedGridFactory.java:948) > >> at > >> ucar.unidata.data.grid.DerivedGridFactory.createFlowVectors(DerivedGridFactory.java:779) > >> 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:597) > >> > >> visad.VisADException: visad.VisADException: FieldImpl.combine: domain > >> dimensions of inputfields must match > >> > >> > >> > > > > > > Ticket Details > > =================== > > Ticket ID: TGX-684536 > > Department: Support IDV > > Priority: Normal > > Status: Open > > > > Ticket Details =================== Ticket ID: TGX-684536 Department: Support IDV Priority: Normal Status: Open