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[IDV #VTX-233380]: wind barbs do not scale correctly

HP-

I checked in a fix tonight which should allow you to use the skip in the 
control instead of having to skip at the data source level.  This was a 
longstanding bug in the IDV, so thanks for the test case.  Sorry it took so 
long to find and fix.

The fix should be in tomorrow's nightly build.  Please let us know if you still 
have problems with this.

Happy Valentine's Day!

Don

> The problem with the skip is still where we left it last time.  I asked
> Yuan and Julien to look into it when they get a chance, however, that
> might not happen for a while.  I suggest using the stride on the dataset
> for now.
> 
> The problem with the large barbs that you can't recreate may be related
> to a bug that still exists with the flow vectors when the map projection
> changes.  I've let Unidata know how to fix that, so hopefully they can
> implement it soon.
> 
> Don
> 
> On 2/6/11 4:11 AM, HP wrote:
> > Hi -
> >
> > Now that I can access again the download site of the nightlies, I have
> > retested the attached ascat...nc file (such nc files are stored in
> > EUMETSAT and NOAA archives):
> >
> > On 2011-02-05 21:57, Unidata IDV Support wrote:
> >>> Rebonjour -
> >>>
> >>> With Don's support I have been able to get a new build and have now
> >>> tested the wind barbs.
> >>>
> >>> Using full spatial resolution the barbs scale now much better, though I
> >>> have to go down to a factor of 1 for a typical wind wind field. So,
> >>> there is now lee way to make them even smaller. I would suggest that you
> >>> blow down the vector by a factor of 2 to 4, 3 say.
> >>
> >> In the test I ware running, I had the same feeling. But, this will
> >> change the expect behavior
> >> of existing bundles and this is not what we like to see.
> > Having had a second look at the sizes and taking into account the
> > consideration about existing bundles I agree to leave as is.
> >>>
> >>> For data thinning the "Skip XY" still does not work. It issues "sample
> >>> do not form a valid grid".
> >>
> >> The RUC grid file I was testing on, the "skip xy" was working ok,
> >> maybe you can upload a sample
> >> file of yours.
> > Try the attached file.
> >>>
> >>> Thus, the only method to spatially thin the data set is thorugh the
> >>> stride tab. However, when thinning this way IDV falls back to the giant
> >>> vectors we have had before.
> >>>
> >>
> >> I can not reproduce this. The stride and skip sent back the same result.
> > I cannot reproduce my prior finding either. Even better.
> >
> > HP
> >>
> >>
> >> Yuan
> >>> All said I hope we are almost there, HP
> >>>
> >>> On 2011-02-03 04:03, Unidata IDV Support wrote:
> >>>> Bonjour HansPeter,
> >>>>
> >>>> Please checkout the nightly build version of the IDV (the nightly
> >>>> builds happen at ~8UTC). Let us know if the wind barbs behave as you
> >>>> expect.
> >>>>
> >>>> Thanks for your input.
> >>>>
> >>>> -Julien
> >>>>
> >>>>>> Full Name: HansPeter Roesli
> >>>>>> Email Address: address@hidden
> >>>>>> Organization: EUMETSAT
> >>>>>> Package Version: 2.9u4 build date:@DATE@
> >>>>>> Operating System: Windows 7
> >>>>>> Hardware: Java: home: C:\Program Files\IDV_2.9u4\jre version:
> >>>>>> 1.6.0_20 j3d:1.5.2 fcs (build4)
> >>>>>> Description of problem: Hi -
> >>>>>>
> >>>>>> Wind barbs do not scale correctly. They scale like flow vectors
> >>>>>> and other point observations. The problem is that the zoom factor
> >>>>>> is not taken into account when the barbs are first drawn.
> >>>>>>
> >>>>>> cheers, HP
> >>>>>>
> >>>>>>
> >>>>>
> >>>>> HP,
> >>>>>
> >>>>> Thanks for submitting this bug report, I will fix it after the AMS.
> >>>>>
> >>>>>
> >>>>> Yuan
> >>>>
> >>>>
> >>>> Ticket Details
> >>>> ===================
> >>>> Ticket ID: VTX-233380
> >>>> Department: Support IDV
> >>>> Priority: Normal
> >>>> Status: Closed
> >>>>
> >>>
> >>>
> >>
> >>
> >> Ticket Details
> >> ===================
> >> Ticket ID: VTX-233380
> >> Department: Support IDV
> >> Priority: Normal
> >> Status: Open
> >>
> 
> --
> Don Murray
> NOAA/ESRL/PSD and CIRES
> 303-497-3596
> http://www.esrl.noaa.gov/psd/people/don.murray/
> 
> 


Ticket Details
===================
Ticket ID: VTX-233380
Department: Support IDV
Priority: High
Status: Open