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[IDV #PUE-499201]: IDV 2.4b3: Problem plotting 3D isobaric surface using GFS GRIB2

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  • Subject: [IDV #PUE-499201]: IDV 2.4b3: Problem plotting 3D isobaric surface using GFS GRIB2
  • Date: Fri, 14 Dec 2007 13:57:01 -0700
Hi Dave-


> I'm not sure what you mean by "can't select one level". I can select a
> single level when I select geopotential height as the field to view
> over topography, and I can select a single level when I specify
> geopotential height again when prompted for the Topography field. I
> can select the same, single level for both--I don't see anything about
> a range of levels.

I figured out how to do this so in the next nightly build, you can select
a single level for both the display  field and the geopotential field.
You can also move up and down through the levels and it will just go
back to the server to get the next level.
 
> Regardless of which level I choose, though, it always plots the 1000
> mb (100000 Pa) pressure surface, and I have to reset the level in the
> display control window to 300000 Pa (say), which then causes it redraw
> the display. Moreover, in the display control window, the scroll bar
> on the Levels menu window doesn't work, so I can't scroll down to
> 300000 Pa--I have to enter the value in the Levels text box. (Using
> the up/down arrows next to the Levels text box seems to cause IDV to
> redraw the display for every intermediate value between the default
> 1000000 Pa value and the one I actually want (say, 3000000 Pa). This
> takes quite a while!

I was able to use the scroll bar on the levels dropdown window on
my Windows system.  I don't have  a Mac to test this on right now.

> I've attached a bundle that loads the GFS GRIB 2 file and tries to
> plot a 300000 Pa pressure surface using 3-D Surface > Color-Filled
> Contour Plan View Over Topography, with 300000 Pa selected for both
> the geopotential height field both initially and for the Topography
> field. (It plots the 100000 Pa surface, where I've left it in the
> bundle.) At that point you  might see if you can replicate the problem
> with the Levels menu in the display control window.

Thanks.  When you get a chance, download the nightly build after tomorrow
and see if the one level selection works for you.  Also, remember that
using the X over topography option allows you to display contours of
fields other than geopotential height on the height surface.  So, using
temperature over topography shows the cold air flowing into the troughs
as they deepen (sometimes).

Have a good weekend.

Don

Ticket Details
===================
Ticket ID: PUE-499201
Department: Support IDV
Priority: Normal
Status: Open