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

> HP-
> 
> 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
> 

Don,
   I cann't see the attached file from HP, I am guessing HP's previous email 
sent to you directly, if so, can you upload his attached?


Thanks,

Yuan
> 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: Normal
Status: Open