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[IDV #MUS-211252]: IDV v3.0b1: Streamlines colored by wind speed; winds on isosurfaces

Hi Dave-


> >> (2) Is it possible to plot wind barbs or wind vectors on an isosurface of 
> >> another quantity other than pressure, such as potential temperature (an 
> >> isentropic surface)?
> >
> > >> This is not possible at present.  It is on the list of things to do.
> 
> It seems like it must be nearly possible, though. It's already possible to 
> color an isosurface with another (scalar) quantity, which means that the IDV 
> can figure the value of another scalar everywhere on the isosurface. Figuring 
> out the value of the u- and v-components of the wind at the same points 
> should be trivial. Plotting the resulting vectors on the isosurface instead 
> of color-contouring scalars on that surface, seems tantalizingly close, 
> particularly since the IDV already does this on isobaric surfaces.
> 
> But if it's already on the list of things to do, I'm just blathering. :-)

You'd think it was that easy, but it's not.  I know I said it's on the list, 
but it's not a trivial thing to implement and would have to be done down in the 
dark shadows of VisAD where most mortals fear to tread.  That said, I am 
talking to SSEC about how this could be done and what it would take to 
implement.  But don't hold your breath waiting. Some of us have day jobs. ;-)

Don

Ticket Details
===================
Ticket ID: MUS-211252
Department: Support IDV
Priority: Normal
Status: Open