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[IDV #DOK-812706]: Incorrect streamlines in IDV with V5D files

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  • Subject: [IDV #DOK-812706]: Incorrect streamlines in IDV with V5D files
  • Date: Tue, 15 Apr 2008 09:25:42 -0600
Hi Pascal-

> Thanks for finding this.  It looks like the bug was introduced
> between versions 2.0 and 2.1.  I'll let you know when we have
> a fix for it.

We finally have a fix for this and it is in the nightly build.
Please let us know if you find any other problems with it.

Don Murray

> >
> > I just wanted to let you know about a little problem I noticed in IDV.
> > The wind-derived streamlines are a bit strange when drawn using data
> > from a vis5D file. i.e. when I create a vector plan view derived from U
> > and V and toggle the Show Streamlines ON, they appear more or less
> > perpendicular to the flow.  But on the other hand, when I use GRIB data,
> > streamlines are correct.
> >
> >
> >
> > For example, I attached a screenshot comparing vectors and streamlines
> > @3.4km generated from the sample dataset available on this site:
> > http://www-eng-x.llnl.gov/documents/tests/v5d.html (direct link to file:
> > http://www-eng-x.llnl.gov/documents/a_object.v5d ).  I added the data
> > source, went to Formulas->Grids->Make flow vector from u and v data,
> > then I used var1 for U and var2 for V.
> >
> >
> >
> > It used to work properly in the past with v5d files but I cannot
> > remember exactly when the problem appeared and forgot to report it at
> > that time. It was probably around the transition from 1.x to 2.0.  I am
> > currently using IDV 2.4.
> >
> >
> >
> > Thanks!
> >
> > Pascal
> >
> >
> >
> > PS: I really like IDV, it is a terrific tool!
> >
> >
> >
> >
> >
> >
> >
> 


Ticket Details
===================
Ticket ID: DOK-812706
Department: Support IDV
Priority: Normal
Status: Closed