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[IDV #ORU-202398]: formula error with ecmwf grib

> 
> ----- Original Message -----
> From: Manuel Mora
> To: address@hidden
> Sent: Wednesday, July 07, 2010 6:17 PM
> Subject: formula error with ecmwf grib
> 
> 
> Dear Sr./Madam:
> 
> I was trying to make a simple grid operation: Temperature difference
> between two layers (500 hpa and 850 hpa). I use the attached grib from
> the ecmwf. I have no problems to work with it, and I can see whatever
> parameter that I want. But I have problems with formulaes. The error
> that appears is:
> 
> creating display:Contour Plan View
> visad.SetException:visad.SetException:Gridded3DSet.valueToGrid:ManifoldDimension
>  must be 3
> org.python.core.PyException.
> 
> Is it easy to find a solution?
> 
> Thanks in advance.
> 
> Best regards,
> Manuel Mora.
> 

Manuel,
       It is very easy to do the layer difference of any grid variable. In the 
Formulas, select Grids > Layer Difference, and enter the layers (such as 500, 
and 850), and the select the fields as Temperature. You probably select the 
Misc. > Simple difference, which calculate the difference of whole field, not 
just a layer. Next time, if you have any problem, please submit the support 
ticket on the error message window, so we can have more information about what 
you are trying to do.


Yuan
> 


Ticket Details
===================
Ticket ID: ORU-202398
Department: Support IDV
Priority: Normal
Status: Closed