[Xastir] Radar Overlay Question

[Gerry Creager]

You have a little homework.  You'll have to snag it using a correctly 
built .geofile. The image alone is 
here:http://www.met.ie/weathermaps/latest_radar.gif

You then have to get the coordinates of the image corners and try to 
determine if it's projected in a polar stereographic form, as so many of 
my colleagues like to make the result more correct for viewing.  I've 
not done the math on the rotation parameters to make that work.  I 
suspect it'll be an html get in the .geo.

<topic status=change subject='OSGB data'>
On another note, there's work afoot to make Ordinance Survey data free 
for Amateur Radio and public service applications, or, if the solicitors 
keep getting in the way, at least to make the geodata inexpensive.  They 
already have a service for cellphones that's about 5 pound GB per year 
(don't know if that's going directly to OS or the cellular carrier) and 
hoping that, for things like APRS (which the head of OS hadn't heard of 
but found very interesting) the data can be available this calendar year.

<status=change subject='Open Geospatial Consortium musings'>
See?  Letting me get out of town to the Open Geospatial Consortium 
meetings is useful to the hobby, too!  On another note, I'm trying to 
hack together an Open Geospatial Consortium Open Location Server using 
APRS-IS data.  Seems OGC OLS folks never thought of the potential for 
using any medium besides cellphones.

OGC demonstrations already use APRS-IS data to demonstrate the Sensor 
Observation Service, both for vehicle tracking and snagging the weather 
data out and using it as sensor streams.  Interesting stuff.  Because 
it's REST- and XML-based, it's not nearly as compact as APRS, but useful 
in the paradigm of the XML revolution that's been sweeping the net...

</topic>

gerry

John Ronan wrote:
> Morning,
> 
> I wonder if one of you guys could give me a pointer as to how I could 
> grab the image in
> http://www.met.ie/latest/rainfall_radar.asp
> and attempt to make it a transparent overlay for xastir?
> 
> Any thoughts appreciated.
> 
> Regards
> de John
> EI7IG
> 
> -- 
> John Ronan <jronan at tssg.org>, +353-51-302938
> Telecommunications Software &  Systems Group,  http://www.tssg.org
> 
> 
> 
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-- 
Gerry Creager -- gerry.creager at tamu.edu
Texas Mesonet -- AATLT, Texas A&M University	
Cell: 979.229.5301 Office: 979.458.4020  FAX 979.862.3983
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