20050223: IDV - isosurface bug or feature?

>From: "Dave Santek" <address@hidden>
>Organization: SSEC
>Keywords: 200502231813.j1NIDNQS024888 IDV isosurface

Hi Dave-

>Institution: SSEC
>Package Version: 1.2b1
>Operating System: os.name:Windows XP; os.arch:x86; os.version:5.1; 
>Hardware Information: java.vendor:Sun Microsystems Inc.; java.version:1.4.2_01
> ; java.home:C:\\Program Files\\IDV_1.2b1\\jre; 
>Inquiry: Hi,
>
>I'm using IDV v. 1.2b1.
>
>I have two v5d files with 11 time steps. I'm calculating a simple difference f
> ield between 
>the same parameters in the two files. I'm displaying as an isosurface.

Do the times overlap in the fields?  How are you doing the simple
difference?  Through the formula, or did you create your own jython
script.

>For the loop of 11 times, I need to ideally specify a different isosurface val
> ue for each time.

>When I do that, I get all the isosurfaces appearing on a single 'frame'. If I 
> assign
>a different isosurface value to groups of time [2 or more], then each isosurfa
> ce appears
>on a different frame, so I can loop them.

If you only have one timestep per grid, it will show up on all "frames".
You could loop through them by toggling the visibility, but that's
probably not what you want to do.

>I tried to keep this brief, but if there's not enough detail let me know. I ca
> n work around
>this problem by grouping pairs of images, but I was wondering if this behavior
>  is by
>design or a bug?

I need more info on how you are doing the subtraction.  Are you picking
two times, subtracting them and then displaying the result at a
certain isosurface value?   What is it your are trying to show?  Maybe
there's another way to skin this cat.

Don't be afraid to be too wordy. ;-)

Don
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