Rich, When I create my own bundle for these data, I see essentially no difference between IDV and Python. See attached bundle and images. Best, Unidata IDV Support > > Yuan, > > So when you run my bundle, do you get the same result? > > -Rich > > > > When I ran the bundle, I got even worst result. My feeling is that those > missing vectors were likely associated with very small values. If you draw > wind barb, you will get every points. > > > Yuan > > On Thu, Jul 2, 2015 at 11:54 AM, Unidata IDV Support > > <address@hidden> wrote: > > >> We are running 5.1u2. Did you look at the bundle? All your > > >> questions are answered by the bundle, no? > > > > > > > > > Rich, > > > I have no problem getting the result similar to the python > > > output. See the attached. However, your bundle does look very strange, > > > almost like some kind of > > > filter working there. I will check and let you know. > > > > > > > > > Yuan > > >> > > >> On Wed, Jul 1, 2015 at 5:34 PM, Unidata IDV Support > > >> <address@hidden> wrote: > > >> > 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 > > >> > > > >> > > >> > > >> > > >> -- > > >> 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: Open > > > > > > > > -- > > 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
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