[aprssig] conveying map view

Robert Bruninga bruninga at usna.edu
Thu Sep 23 13:35:27 CDT 2004

>>> "Curt, WE7U" <archer at eskimo.com> 9/23/04 2:09:10 PM >>>
>Well, we could create a new View dialog that had a list 
>of the Map View Objects and some info on them, then 
>the user could choose one (or not).  

Yes, that sounds perfect.

>Alternative is that if you already are participating in the event 
>and know where to look for the objects, find the views that 
>way instead.

Yes, it is no problem for APRSdos or any of the other programs
that have fully zoomable maps.  I think the original need for 
this comes from those programs that can't zoom and are limited
to fixed maps...  In that case, the dialog box is a great solution..

>I'm after something that is a "pull" instead of a "push". 
> I want the end-user to be the one trying to change the 
>map view, from some list or set of objects that are present...
>...If we can think of cases where one "controller" should 
>be able to change everybody's displays at once, then lets 
>figure out a way..

I like your concept of "subscription" to an event and letting
your system respond to the "net control".  Actually that
subscription is already well defined in the APRS Spec.
Its called the "SPCL" operations.  Its lilke a pre-dfefined
ALT-NET.  Everyone that is working a given special 
event sets "SPECIAL" mode which identifies him as a 
participant in the local event.  This could then be the
"subscription" you propose.

There is no NET CONTROL, but once you are in a local
event whic vastly restricts your response to QRM non-event
packets, then you could allow anyone in the event to send
the EYEBALL and everyone that is subscribing would then
be one step closer to allowing automatic reception from
this event... of a PUSHED map view..?

people can subscribe to that feature somehow so that the control is
limited.  Right now I don't see a need for that.

Curt, WE7U			         http://www.eskimo.com/~archer 
"Lotto:    A tax on people who are bad at math." -- unknown
"Windows:  Microsoft's tax on computer illiterates." -- WE7U
"The world DOES revolve around me:  I picked the coordinate system!"

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