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[aprssig] conveying map view

Wes Johnston wes at johnston.net
Wed Sep 22 03:26:26 UTC 2004

Ahhh.... I see.... right click on an object and one of the options (if it is a mapview object) will be to activate it's view... and then it will zoom and center your display.... NEAT!

(Curt's probably grumbling about this "one more feature" now! hihi)

----- Original Message -----
From: Bill Herrmann <bherrman at spro.net>
Date: Tue, 21 Sep 2004 21:06:10 -0600
To: TAPR APRS Mailing List <aprssig at lists.tapr.org>
Subject: Re: [aprssig] conveying map view

> At 05:10 PM 9/21/2004 -0700, Curt Mills wrote:
> >I'm starting to like the idea of posting an object of a certain
> >format, rather than a message.  If it had a standard format, clients
> Curt's onto something here. APRS clients already support it and...
> (from the APRS spec - in the object/item section)
> The position may be in lat/long or compressed lat/long format, and the 
> report may also contain Extended Data.
> Guess what we already have in the extended data definitions... Range!
> (from the APRS spec)
> The 7-byte RNGrrrr Data Extension allows users to transmit a precalculated 
> omni-directional radio range, where rrrr is the range in miles (with 
> leading zeros). For example, RNG0050 indicates a radio range of 50 miles.
> Sounds to me like it is an already defined frame that can contain both 
> center and range information. Not only that, but objects, by definition, 
> are supposed to include the senders callsign. (I should note that either 
> objects or items would appear to work.)
> The only compromise involved is to change the range meeting from RF range 
> to range of map view. I think most of us would agree that that is a 
> reasonable change.
> Bill
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