[aprssig] "The New" WXSVR and Canada

[Quinton Jansen]

In theory the general outlines can be traced from the maps on 
weatheroffice.gc.ca.  While you may not get all the detailed areas, you 
should get the general concept.

Is someone working on sending the Canadian warnings to APRS?  If not, I 
could add it to my todo list.

Quinton
VE7SOG

Brad [VE3BSM] wrote:
>
> My memory's a bit foggy on the discussions, since they were several 
> years ago. I have this vague recollection that there was a 
> "disconnect" between the actual bulletins provided by Environment 
> Canada and the shapes. I think it boiled down to "somebody" doing the 
> work as you describe below, and at that time (and probably still), the 
> people most interested in Canadian data were primarily concerned with 
> the warnings, and less with the shapes. I don't recall anybody 
> involved with the early discussion even knowing if drawings as you 
> describe exist anywhere (at least in a form the average citizen could 
> get at). I know Dale and some others had looked into this much more 
> deeply than I, and eventually gave up.
>
>  
>
> Either way, **just** getting the actual warnings would probably make 
> most people who care very happy. Heck, for all I know, I'm the only 
> Canadian left who does care. :-)
>
>  
>
> Brad.
>
> VE3BSM
>
>  
>
> *From:* Stephen H. Smith [mailto:wa8lmf2 at aol.com]
> *Sent:* Tuesday, August 04, 2009 17:08
> *To:* TAPR APRS Mailing List
> *Subject:* Re: [aprssig] "The New" WXSVR and Canada
>
>  
>
> Brad [VE3BSM] wrote:
>
>  
>
> Previously, Dale's server provided warnings (but not shapes) for some 
> or all of Canada. I know because I was gating warnings for Ontario 
> (WTOSVR) out to RF. I recall Dale & I exchanging e-mail on his work to 
> being able to send out the Canadian warnings (and the 
> near-impossibility of doing shapefiles for Canada thanks to the 
> Canadian government).
>
>
> Why should that be "near-impossble"?    The shapes are just 
> vector-drawing outlines, similar to what Adobe Illustrator, AutoCad or 
> Corel Draw create, tagged with absolute lat/long coordinates rather 
> than inches or cm from some arbitrary origin point.
>
> Even if these shapes are not available for effortless download from 
> some government agency, it should be possible to load a scanned image 
> of a paper map (or bitmap image from a website) into a vector-oriented 
> program like Corel Draw, Adobe Illustrator, MapInfo or ArcView as the 
> bottom layer.  Then trace the boundaries of whatever warning zones or 
> areas Environment Canada uses for weather alerts, using the program's 
> vector draw tools.   You then save the outline objects on the vector 
> layers into individual files and convert them to ESRI ArcView format.
>
>
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