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[aprssig] Test program using MapSource Maps

Brady Bradysmall at bellsouth.net
Tue Jun 13 03:38:36 UTC 2006


I'm in the mists of writing an Map Point App that will run fast.

Since all the apps that I have found just shove all the data they get into
map point all at once, it gets REALLY SLOW.

I'm taking a different approach, watch the window and only update the
stations that are currently visible. Just like UI-View does.

Map point allows you to keep an collection of "push pins", and it would just
be a matter of destroying the collection and re-creating it as the user
moves around the map. A total refresh of the collection on a zoom, or adding
removing as the user scrolls out of the area.

Of course my app would have to keep a list of all the stations that it
hears, and only updates the push pin collection in mappoint as the user does
what ever since mappoint chokes at more than 200+ stations, usable but slow.

Brady
KI4NBY

-----Original Message-----
From: aprssig-bounces at lists.tapr.org [mailto:aprssig-bounces at lists.tapr.org]
On Behalf Of James Washer
Sent: Monday, June 12, 2006 10:29 PM
To: aprssig at lists.tapr.org
Subject: Re: [aprssig] Test program using MapSource Maps

Ick... ;-)

That really is a hack...  ;-)

Ok.. thanks... I was hoping more that you'd figured out how to read the data
files directly..

BTW... you might want to download a free copy of vmware to run a windows
"guest" in.. you can iconify the guest, but still have mapsource running as
the top program on that windows guest. I've got about 6 different guests
running on this box now, and they all work like a champ.

Nice job on the website.

 - jim

On Mon, 12 Jun 2006 19:11:03 -0700
BH <brent.hildebrand at gmail.com> wrote:

> The program is quite simple.  Windows allows for stuffing characters 
> into  the top level program, so that is all I do using a few windows 
> API calls.  So to go to a particular Lat/Long position, make MapSource 
> the top level program,  Send it the characters Ctrl+T,  find the input 
> edit box, stuff in the appropriate character representation of the 
> desired Lat/Long and simulate the pressing of the Enter key, and 
> MapSource has been panned to that partular location.  Do the same for 
> the scale.  Then do a screen capture.  Calibrating for Lat/Long is 
> quite simple.  If you are on the "5 mi." scale, then 100 pixels = 5 
> miles.  You know the center, and you set and/or determine the map 
> size, it is just a simple matter of calculating the  Lat/Long of the 
> corners.  You can then draw what ever you want on the map.  Viewpoint 
> of course does the connection to the APRS-IS, and has a simple HTTP 
> server.  Data is stored locally, no calls to Findu.  That's it.  The 
> biggest drawback is that in order to do screen captures, the map needs 
> to be the top level program.  Not too nice if you want to use the 
> computer for real work instead of play as the map program pops on top 
> for the capture, then disappears.  So it is probably best to run it on 
> a older computer that can be dedicated for that purpose, or just run 
> locally for your own use so you know when the pop up is going to 
> happen.
> 
> On 6/12/06, James Washer <washer at trlp.com> wrote:
> > Would you care to tell us how you "interfaced" to mapsource maps? and/or
where we can view the source?
> >
> > On Mon, 12 Jun 2006 18:19:20 -0700
> > BH <brent.hildebrand at gmail.com> wrote:
> >
> > > MapSource is a Windows program.  The code is open, IF you read APL.
> > >
> > > On 6/12/06, Stephen Brown Jr <stephen.brown75 at gmail.com> wrote:
> > > > That's pretty nice. Is this running on a linux platform? Are you 
> > > > willing to share the source code? I would be interested in running
this here as well.
> > > >
> > > > 73,
> > > > Stephen
> > > > N1VLV
> > > >
> > > >
> > > >  On 6/12/06, BH <brent.hildebrand at gmail.com> wrote:
> > > > >
> > > >  I have a test program running that uses MapSource maps.  The 
> > > > program is running here:
> > > > http://viewpoint.no-ip.org:8080.  The user interface is only via 
> > > > a Web Browser once it is set up.
> > > >
> > > > Currently support are PHG circles, Map Icons, and moving tracks.  
> > > > DFS circles are supported by not extensively tested and the 
> > > > colors probably are not correct.
> > > >
> > > > For U.S. locations, you can search by city name and state.  
> > > > Search by Grid Square and Lat/Long also is supported.  Sample 
> > > > Lat/Long entry would be:  W34 30 / N117 20.  Or it could be 
> > > > entered  -34.5 / 117.33333.  The "/" is used to separate Lat from
Long.
> > > >
> > > > Maps are described in terms of Range from the center to the 
> > > > minimum extent.  Example, a 10 mile Range map will show all 
> > > > stations out to 10 miles radium in all directions at a minimum, 
> > > > which is usually the North/South distance.  There may be more 
> > > > range in the East/West direction as the map shapes are rectangular.
> > > >
> > > > The program supports the sending of APRS messages, but to send a 
> > > > message, you must be issued a "passcode" for your callsign in 
> > > > order to restrict use to authorized users.
> > > >
> > > > The intent of the program is for use on a local network, but it 
> > > > can be connected to the Internet as it will be for the next few 
> > > > days, (or until is dies.)
> > > >
> > > > Map products can be changed by entering "//" for the callsign 
> > > > without quotes, and selecting the map desired.  Of course, if 
> > > > multiple people are changing maps at the same time, that would
create a conflict.
> > > >
> > > > Most APRS packet types are decoded, except Weather and 
> > > > Compressed Position packets.  Object/Item data entry and data 
> > > > search functions are not currently functional and are not exposed on
the web pages.
> > > >
> > > > Feed back would be appreciated.
> > > >
> > > > Brent KH2Z
> > > >
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> > > >
> > > >
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