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

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  • Subject: [IDV #MUS-211252]: IDV v3.0b1: Streamlines colored by wind speed; winds on isosurfaces
  • Date: Thu, 08 Sep 2011 08:57:37 -0600
Hi Dave-

I just have to butt in.

> Two questions about IDV capabilities:
> 
> (1) Is it possible to color streamlines based on the wind speed? (I don't see 
> any obvious way to do this, and no reference to it in the User's Guide.)

Use the Grids->One value colored by another formula and select the Flow 
Displays->Streamline Plan View display.  For the Data Field, select the True 
Wind vectors and for the Color field, select Speed (from u and v).

> (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)? To do so seems as if it would require knowing the height 
> field of the isosurface, which defines the topography on which the winds 
> would be plotted. The IDV currently can plot wind vectors on isobaric 
> surfaces because the geopotential heights of such surfaces are available in 
> forecast model data files, but if the IDV calculates the height field for 
> other kinds of isosurfaces as a necessary step toward creating an isosurface 
> plot, then couldn't winds be plotted on that topography, too?

This is not possible at present.  It is on the list of things to do.

Don Murray

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