[IDV #LVV-324117]: Layer average RH

The documentation 
(http://www.unidata.ucar.edu/software/idv/docs/userguide/tools/JythonLib.html) 
is decidedly vague, but seems to point at your 1st suggestion. Have you tried 
other functions in that library that may accomplish what you want?

-Julien

> Hi Julien,
> 
> Thanks to your visual, I was able to get that to work, *but*, in
> examining the output, it appears as if it simply calculates each chosen
> layer individually, but does not actually compute the mean of all layers
> chosen.. Is this correct, or am I doing something wrong?
> 
> Thanks (really appreciate the time spent to build the video tutorial!).
> 
> Scott
> 
> ----- Original Message -----
> From: Unidata IDV Support <address@hidden>
> Date: Tuesday, November 30, 2010 3:18 pm
> Subject: [IDV #LVV-324117]: Layer average RH
> 
> > Scott,
> >
> > See this screen cast and tell me what you think:
> >
> >
> http://motherlode.ucar.edu/repository/entry/show/RAMADDA/Unidata/Staff/Julien+Chastang/Screen+cast/AvgLayer.mov?entryid=7cc013c5-bee6-4dd8-8f42-f7462f205724
> >
> >
> > -Julien
> >
> > > Julien,
> > >
> > > Yes. I am attempting to generate a simple plan-view animation of
> > a layer
> > > mean RH.  But of course, I'd like to be able to do that with any
> > > parameter (wind, omega, whatever).
> > >
> > > Thanks,
> > > Scott
> > >
> > > Unidata IDV Support said the following on 11/30/2010 1:11 PM:
> > > > 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
> > > >
> > > >
> > >
> > > --
> > >
> > > *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
> >
> >
> 
> 


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