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[IDV #DSN-496768]: IDV not generating aerological profiles (soundings)

Hi Simon-

The grid sounding subsystem assumes that the vertical dimension is pressure and 
that's how it gets the pressure for the sounding.  Would you upload a sample 
file to:

http://motherlode.ucar.edu/repository/alias/idvupload

and I'll take a look to see if there is any quick thing we can do to accomodate 
your files.

Don Murray


> Full Name: Simon Metcalf
> Email Address: address@hidden
> Organization: NSW Rural Fire Service
> Package Version: 2.7u2 build date:2009-08-26 16:33 UTC
> Operating System: Windows XP
> Hardware: Java: home: C:\Program Files\IDV_2.7u2\jre version: 1.6.0_13 
> j3d:1.5.2 fcs (build4)
> Description of problem: I can't get IDV to generate an aerological profile 
> (sounding) diagram for data from a local scale meteorological and dispersion 
> model I am using.  In fact, it won't calculate any of the derived functions 
> using data from this model.  I have set up the appropriate aliases so that 
> the Sounding Data functions are available in the list of derrived functions.  
> I have successfully managed to create profiles using an alternative model.  
> One aspect to note is that in this model the vertical coordinate system is in 
> metres rather than pressure however the model does have a 4D pressure field 
> for calculations where pressure is required and it is successfully 
> recognising pressure in the list of derived functions, so I don't think the 
> vertical coordinate system is the problem.  A quick glance at the reveals 
> something about the temperature units.  This model stores temperature in 
> Degrees Celsius rather than Kelvin like most models.  If this is a problem do 
> I have to
  convert the units in the Temperature field first?
> 
> Creating display: Grid Skew-T
> org.python.core.PyException
> 
> Traceback (innermost last):
> File "<string>", line 1, in ?
> at ucar.visad.Util.vetType(Util.java:256)
> 
> at 
> ucar.visad.quantities.SaturationVaporPressure.create(SaturationVaporPressure.java:346)
> 
> at 
> ucar.unidata.data.grid.DerivedGridFactory.makeDewpointFromTAndRH(DerivedGridFactory.java:1561)
> 
> at 
> ucar.unidata.data.grid.DerivedGridFactory.createDewpoint(DerivedGridFactory.java:1520)
> 
> 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.TypeException: visad.TypeException: MathType of data object 
> (((Longitude, Latitude, Altitude) -> temp[unit:degrees_C])) is incompatible 
> with required MathType (Temperature)
> 
> ******************
> Stack trace:
> Traceback (innermost last):
> File "<string>", line 1, in ?
> at ucar.visad.Util.vetType(Util.java:256)
> 
> at 
> ucar.visad.quantities.SaturationVaporPressure.create(SaturationVaporPressure.java:346)
> 
> at 
> ucar.unidata.data.grid.DerivedGridFactory.makeDewpointFromTAndRH(DerivedGridFactory.java:1561)
> 
> at 
> ucar.unidata.data.grid.DerivedGridFactory.createDewpoint(DerivedGridFactory.java:1520)
> 
> 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.TypeException: visad.TypeException: MathType of data object 
> (((Longitude, Latitude, Altitude) -> temp[unit:degrees_C])) is incompatible 
> with required MathType (Temperature)
> 
> 
> 


Ticket Details
===================
Ticket ID: DSN-496768
Department: Support IDV
Priority: Normal
Status: Open