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[IDV #RVK-621478]: McIDAS-V inquiry #1048 updated



Bob,

The wind barbs are now consistent between plots and views. Please get the 
nightly build tomorrow to confirm.

Best Regards,
 
-Unidata IDV Support

> Bob,
> 
> I could be wrong, but here is my analysis of the situation which is backwards 
> from yours.
> 
> First off, people appear to deal with wind barbs in knots rather than meters 
> per second.
> 
> Second, my understanding is that wind speeds from 0 to 5 knots are calm 
> represented by a circle. After that, (i.e. >= 5 knots), we start to see lines 
> with barbs attached. The map view wind barbs, rendered with VisAD, seem to do 
> this correctly. Strictly speaking, as far as I can tell, there is no wind 
> barb line without a barb.
> 
> In conclusion, I think the Map View of wind barbs are correct, but the 
> Dashboard Plot does not deal with calm wind speeds correctly. I would 
> recommend fixing the Dashboard plots of wind barbs for low wind speeds.
> 
> Best Regards,
> 
> -Unidata IDV Support
> 
> >
> > While in most cases this problem appears to be fixed, there is still an 
> > issue when a station is reading 1 m/s wind. When this is the case, the plot 
> > in the Main Display Window shows an open circle, while the plot in the 
> > Layer Controls (Displays) tab displays a barb without any flags. However, 
> > the barb in the Layer Controls (Displays) tab does point the proper 
> > direction with respect to the wind direction reported.
> >
> > This is a case where the barb is plotted correctly in the Layer Controls 
> > (Displays) tab and not in the Main Display Window. This is the only 
> > circumstance where I could find any inconsistency between the two displays.
> >
> > ----==== Inquiry ====----
> > 1048
> >
> > ----==== Summary ====----
> > Point data wind barbs differ between map display and plot in layer controls
> >
> >
> > ################################################################################
> >
> > http://dcdbs.ssec.wisc.edu/inquiry-v/index.php?inquiry=1048
> >
> >
> 


Ticket Details
===================
Ticket ID: RVK-621478
Department: Support IDV
Priority: Normal
Status: Closed


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