[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[IDV #WHS-790529]: Issue with bottom velocity vectors



Rich,

Here are a few comments:

- Update your IDV to the latest version (5.1u2, this will yield no improvement
probably, but it is usually best to work with the latest version of the IDV).

- For clarification, the flow vectors are supposed to be derived from what? The
data contain two u and v fields (momentum versus stokes). Which one are you
interested in? (I wonder if there is confusion/mismatches going on here.)

- Are you sure you are looking at the same geographic extents? The IDV is
displayed roughly over NY harbor. I cannot tell where the Python plot is
located.

- I wonder if there are numerical errors going on. One of the Derived Fields in
the IDV is "Speed (from U & V)".  When you do a "Value Plot" of these data, do
you get numbers you expect?

- Experiment with the Flow Vector Control in the IDV Dashboard, Displays Tab.

Keep us up-to-date on your progress.

Best,

Unidata IDV Support




> IDV Gurus,
> 
> We are struggling to get bottom velocity vectors displayed properly in
> IDV (5.0u2) for a Hurricane Sandy ocean simulation.
> 
> The bottom velocity for 2012-10-30 00:00:00 should look like the 1st
> attached image (plotted in python using this notebook):
> http://nbviewer.ipython.org/gist/rsignell-usgs/a85e68a71933910a171a
> 
> but instead it looks like the 2nd attached image.
> 
> In the IDV image you can see that the flow at the coast is the wrong
> direction, and there are those strange black areas with no vectors.
> 
> What is going on here?
> 
> I'm attaching the bundle so you can recreate this yourself.
> --
> Dr. Richard P. Signell   (508) 457-2229
> USGS, 384 Woods Hole Rd.
> Woods Hole, MA 02543-1598
> 
> 


Ticket Details
===================
Ticket ID: WHS-790529
Department: Support IDV
Priority: Normal
Status: Closed


NOTE: All email exchanges with Unidata User Support are recorded in the Unidata inquiry tracking system and then made publicly available through the web. If you do not want to have your interactions made available in this way, you must let us know in each email you send to us.