[IDV #PWO-933032]: Wind shear problems

["Unidata IDV Support" <support-idv@xxxxxxxxxxxxxxxx>]

Hi Jim-

> Full Name: Jim Limbacher
> Email Address: Jalimbac@xxxxxxxxxxxxxxxxxxxxxxxxx
> Organization: Senior met major at Millersville Unviersity
> Package Version: 2.4 build date:2007-12-20 16:34 UTC
> Operating System: Windows XP
> Hardware: Java: home: C:\Program Files\IDV_2.4\jre version: 1.5.0_11 j3d:1.3.2 fcs (build12)
> Description of problem: I am still getting this error even though I am selecting three levels.  Is there a way to calculate wind shear from 2 different files(1 u and 1 v at various levels)?  Could you recommend a function for me seeing how the one I made is not working.  I get an error for everything I do.
> Creating display: Color-Filled Contour Plan View
> org.python.core.PyException

Alright, let's take a step back.

In your formula:

sqrt(tU*tU+tV*tV)-sqrt(bU*bU+bV*bV)

are tU and bU different variables or are t and b constants?

Are you trying to do a layer shear?  If so, how are you selecting
the layers?

Have you tried the formula Grids->Layer Wind Shear?

That will allow you to select the layers, and then select the
the U, V and Z components.  You'll need Z to calculate dz between
the layers.  If you just want a magnitude of the speed
difference, it might take a little Jython to do the appropriate
slicing.

Don Murray


> ******************
> Stack trace:
> Traceback (innermost last):
> File "<string>", line 1, in ?
> AttributeError: 'javainstance' object has no attribute '__call__'
> 
> 
> 


Ticket Details
===================
Ticket ID: PWO-933032
Department: Support IDV
Priority: Normal
Status: Open