[IDV #LVV-324117]: Layer average RH

Hi Scott.

I see from your png that you seem to be averaging over many time steps. Is that 
really your intention? (I am not sure that is the root of the problem, however.)

Thanks.

-Julien

> Hi Julien,
> 
> I have attempted to use
> |layerAverage(grid, top, bottom)
> 
> in a formula, but perhaps it's my ignorance of how to utilize this function.
> 
> For example, when using one of the IDD servers to access the NAM model
> data, I am attempting to use the layerAverage function (see jython.png).
> 
> I'm guessing that I am using this incorrectly, as I get the error
> (attached error.png).
> 
> Can you educate me?
> 
> Thanks for your help.
> 
> Scott
> |
> Unidata IDV Support said the following on 11/30/2010 12:43 PM:
> > Hi Scott.
> >
> > Have you considered Jython:
> >
> > http://www.unidata.ucar.edu/software/idv/docs/userguide/page_dataanalysis.html
> >
> > Thanks.
> >
> > -Julien
> >
> >
> >> Full Name: Scott Stephens
> >> Email Address: address@hidden
> >> Organization: NOAA/NCDC
> >> Package Version: 2.9u2 build date:2010-10-04 19:14 UTC
> >> Operating System: Windows 7
> >> Hardware: Java: home: C:\Program Files (x86)\Java\jre6 version: 1.6.0_21 
> >> j3d:1.5.2 fcs (build4)
> >> Description of problem: Creating display: Image Display
> >> TypeError: createLayerAverage(): 2nd arg can't be coerced to double or 
> >> String
> >> org.python.core.PyException
> >>
> >> -----
> >> What is the best way to calculate a layer average of two or more fields? 
> >> For example, when evaluating NCEP model grids, what would be the best way 
> >> to calculate average relative humidity between 850mb and 500mb (inclusive 
> >> of all intermediate levels)? I have attempted to use the grid diagnostics 
> >> with no success. Thanks!
> >>
> >> ******************
> >> Stack trace:
> >> Traceback (innermost last):
> >> File "<string>", line 1, in ?
> >> File "<string>", line 191, in lav
> >> File "<string>", line 83, in layerAverage
> >> TypeError: createLayerAverage(): 2nd arg can't be coerced to double or 
> >> String
> >>
> >>
> >>
> >>
> >
> >
> > Ticket Details
> > ===================
> > Ticket ID: LVV-324117
> > Department: Support IDV
> > Priority: Normal
> > Status: Closed
> >
> >
> 
> --
> 
> *Scott E. Stephens*
> 
> */Meteorologist/*
> 
> Customer Services/Climate Monitoring
> 
> NOAA’s National Climatic Data Center
> 
> 151 Patton Avenue
> 
> Asheville, NC 28801-5001
> 
> V: 828-271-4800
> 
> F: 828-271-4876
> 
> E-Mail: address@hidden <mailto:address@hidden>
> 
> http://www.ncdc.noaa.gov/monitoring
> 
> 
> 
> */ /*
> 
> */ /*
> 
> 
> 
> 
> 


Ticket Details
===================
Ticket ID: LVV-324117
Department: Support IDV
Priority: Normal
Status: Open