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Re: [udig-users] Combining Wind Direction and Wind Speed Data into Wind Barb
Thanks for the excellent summary of options; while the "style layer descriptor" specification we use for rendering vector data is very complete - wind barbs are a very hard problem :-) As are cold fronts and a host of other interesting weather related symbology.
Since you asked on the user list I will have to say no - uDig cannot render wind barbs. We would love to see the functionality developed - and would be pleased to start you out in a good direction. 

Jody

Jesse Eichar wrote:

Hi,
There are two ways to do this. Implementing a MapGraphic is probably the easiest. Create a MapGraphic extension that draws the wind speed/barb.
The other way is complicated but I'll quickly throw it out just to be complete. You make a IService for the wind data/ wind direction (maybe one for each). Then implement a Renderer for drawing them. Sounds simple but really it will be around 10 classes. 

Jesse

On 11-Aug-08, at 10:46 PM, John Schattel wrote:
I am retrieving wind data from a Web Feature Service. I'd like to combine the wind speed data and wind direction data into a wind barb as shown below: 

http://ww2010.atmos.uiuc.edu/(Gh)/guides/maps/sfcobs/wnd.rxml
Can I do this with Udig? If so, how would I go about merging the two data sets into the one graphic. 

In advance, thanks for any help you can provide.

John

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The contents of this message are mine personally and do not necessarily reflect any position of NOAA. 

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