Re: [idvusers] Data Transect on 3D grid

Hi Ilan-

I'm not sure why this isn't working for you. make2D is in the 2.7u2 and 2.8b1 releases and the error indicates that the IDV can't find it. Did you use make2D(slice) as the diagnostic?

Selectthe Edit->Formulas->Jython Library menu to bring up the Jython Library. Expand the System tab and select the Grid routines. Use the search facility and look for make2D. Does that get highlighted?

Another option is to try using:

GridUtil.make2DGridFromSlice(slice)

as the diagnostic which is what make2D actually calls.

If that doesn't work, please send a note to support-idv@xxxxxxxxxxxxxxxxx We can diagnose that off the list.

Thanks.

Don Murray


Levy,Ilan [Ontario] wrote:
I have tried what you suggest, and I'm getting the following error:
Traceback (innermost last):
  File "<string>", line 1, in ?
NameError: make2D

I also tried to create a 2D subset of my data and use the Data Transect,
but then I get the following error:
visad.VisADException: input has wrong dimension
        at
visad.CartesianProductCoordinateSystem.toReference(CartesianProductCoord
inateSystem.java:166)
        at visad.CoordinateSystem.toReference(CoordinateSystem.java:844)
        at
ucar.unidata.idv.control.CrossSectionControl.convertToDisplay(CrossSecti
onControl.java:1082)
        at
ucar.unidata.idv.control.CrossSectionControl.getXYPosition(CrossSectionC
ontrol.java:1016)
        at
ucar.unidata.idv.control.CrossSectionControl.initDone(CrossSectionContro
l.java:522)
        at
ucar.unidata.idv.control.DisplayControlImpl.init(DisplayControlImpl.java
:1086)
        at
ucar.unidata.idv.ControlDescriptor.initControl(ControlDescriptor.java:97
9)
        at
ucar.unidata.idv.ControlDescriptor$1.run(ControlDescriptor.java:904)
        at ucar.unidata.util.Misc$3.run(Misc.java:1061)


Ilan
-----Original Message-----
From: Don Murray [mailto:dmurray@xxxxxxxxxxxxxxxx] Sent: December 16, 2009 12:40 PM
To: jeff mcwhirter
Cc: Levy,Ilan [Ontario]; idvusers@xxxxxxxxxxxxxxxx
Subject: Re: [idvusers] Data Transect on 3D grid

I agree with Jeff that we could look into adding this, but for now,
here's a way to do it:

- Load in your grid.
- Select the Formulas data source.
- Select the "Grids->Define a grid diagnostic"  formula
- Select the "Cross Section->Data Transect" display.

For the formulas, enter make2D(slice)

When the field selector pops up, select the field and the level that you
want for the slice parameter.

That should create the display.

Don Murray

jeff mcwhirter wrote:
Levy,Ilan [Ontario] wrote:
Hi,
I have a 3D grid (model output) and I'm trying to draw a Data Transect. However I do not have this option under the Probes display,

only if I choose one of the 2D grids (lat&lon).
What I want is a line plot of the grid values along a line at the surface level.
I've tried this on IDV 2.7u2 and 2.8b1.
Right now the data transect display is only applicable to 2D gridded fields. I guess we could support 3D and allow the user to select a level like we do in the plan view displays.

-Jeff

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--
*************************************************************
Don Murray                               UCAR Unidata Program
dmurray@xxxxxxxxxxxxxxxx                        P.O. Box 3000
(303) 497-8628                              Boulder, CO 80307
http://www.unidata.ucar.edu/staff/donm
*************************************************************

--
*************************************************************
Don Murray                               UCAR Unidata Program
dmurray@xxxxxxxxxxxxxxxx                        P.O. Box 3000
(303) 497-8628                              Boulder, CO 80307
http://www.unidata.ucar.edu/staff/donm
*************************************************************