NOTICE: This version of the NSF Unidata web site (archive.unidata.ucar.edu) is no longer being updated.
Current content can be found at unidata.ucar.edu.
To learn about what's going on, see About the Archive Site.
NOTICE: This version of the NSF Unidata web site (archive.unidata.ucar.edu) is no longer being updated.
Current content can be found at unidata.ucar.edu.
To learn about what's going on, see About the Archive Site.
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