[Xastir] Placing Markers on map

[William McKeehan]

That's how I do it, and I use a bit of Windows software, "GPS Utility"
(www.gpsu.co.uk) to generate the shape files. GPSU is designed primarily to
manage waypoints/tracks for a GPS unit, but it imports and exports a lot of
formats, one of which happens to be shapefiles. I had to write my dbfawk files
by hand, but that's not too difficult.
-- 
William McKeehan
KI4HDU
http://mckeehan.homeip.net


On Tue, March 31, 2009 5:58 pm, Tom Russo wrote:
> On Tue, Mar 31, 2009 at 02:41:40PM -0700, we recorded a bogon-computron
> collision of the <archer at eskimo.com> flavor, containing:
>> On Sun, 29 Mar 2009, Brett Friermood wrote:
>>
>> > I'm trying to figure out a good way to add markers to my map display.
>> >
>> > I would like to mark the locations of the DNR's fire towers around me to
>> be
>> > able to plot sightings using a direction finding object.
>> >
>> > I thought of using objects, but I don't want to broadcast them if I choose
>> > to broadcast other objects. I was tried using a small picture with a .geo
>> > file, but when zooming in and out the size changes.
>> >
>> > Is there any other way to do something like this?
>>
>> In other APRS programs an "overlay" file might be the best way to do
>> this.  Xastir doesn't support overlay files though.
>>
>> I can think of a few ways, some better than others:
> [...]
>> *) Create a map containing the objects.  You could do this by
>> plotting an object and then moving it around to draw something with
>> it's track, then save the track.  This creates a shapefile map which
>> can then be renamed and moved to the Xastir Map heirarchy somewhere
>> and used as a regular map.
> [...]
>>
>> There may be other ways I can't think of just now, perhaps others
>> will pipe up with more ideas.
>
> Look in README.MAPS under "Rolling your own shapefile maps."  It is around 46%
> of the way down the file.  I find that the easiest way to do it is the fourth
> listed method, but it involves having shpcreate, dbfcreate, shpadd and dbfadd
> from the shapelib distribution installed (easy stuff, and one of these days I
> should change our internal shapelib set-up so it builds them, too).
>
> Point shapefiles are the closest thing that Xastir has to overlays.  In fact,
> it should be a simple matter to script an overlay-to-shapefile converter,
> especially in python with GDAL support.  <gets idea for evening hackage...>
>
> --
> Tom Russo    KM5VY   SAR502   DM64ux          http://www.swcp.com/~russo/
> Tijeras, NM  QRPL#1592 K2#398  SOC#236        http://kevan.org/brain.cgi?DDTNM
>   In some cultures what I do would be considered normal.
>                                   -- Ineffective daily affirmation
>
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