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[IDV #PTE-837458]: Error calculating simple difference in 20km NAM 'surface' data

Hi Dave-

> Full Name: Dave Flory
> Email Address: address@hidden
> Organization: Iowa State University
> Package Version: 2.5 build date:2008-05-08 07:05 UTC
> Operating System: Windows Vista
> Hardware: Java: home: C:\Program Files (x86)\Java\jre1.6.0_07 version: 
> 1.6.0_07 j3d:1.3.2 fcs (build12)
> Description of problem: Creating display: Contour Plan View
> org.python.core.PyException
> 
> The following error is encountered when using 20km NAM surface data from 
> motherload.  The request
> is for a contour plan view of the 850mb temperature and the surface 
> temperature.  The 850mb temperature
> is selected from the 3D list of fields and the surface temperature from the 
> 2D list of fields.  Individual plots
> indicate that the units on these variables are the same so it should be easy 
> to calculate a simple difference.

The problem is that one field is a 2D field (surface, (x,y)) and the other is
a slice of a 3D field (850 (x,y,z)).  Try using the Grids->Define a grid 
diagnostic
formula and use the GEMPAK syntax of sub(a,b).

I should probably change the simple difference formula to use this.

Don

> Traceback (innermost last):
> File "<string>", line 1, in ?
> at visad.FunctionType.binary(FunctionType.java:283)
> 
> at visad.DataImpl.binary(DataImpl.java:138)
> 
> at visad.DataImpl.subtract(DataImpl.java:192)
> 
> at visad.DataImpl.__sub__(DataImpl.java:1400)
> 
> 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)
> 
> 
> 
> 
> ******************
> Stack trace:
> Traceback (innermost last):
> File "<string>", line 1, in ?
> at visad.FunctionType.binary(FunctionType.java:283)
> 
> at visad.DataImpl.binary(DataImpl.java:138)
> 
> at visad.DataImpl.subtract(DataImpl.java:192)
> 
> at visad.DataImpl.__sub__(DataImpl.java:1400)
> 
> 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: FunctionType.binary: types don't 
> match
> 
> 
> 


Ticket Details
===================
Ticket ID: PTE-837458
Department: Support IDV
Priority: Normal
Status: Open