Re: Custom GPS Map Software

From: H.W. Stockman (stockman3_at_earth-REMOVE_THIS-link.net)
Date: 09/17/04


Date: Fri, 17 Sep 2004 20:34:52 GMT


"HH" <htrinh@hotmail.com> wrote in message
news:lBD2d.22994$t61.6510@clgrps13...
>

> What I'm suggesting is that some company who already have software that
can
> turn rater to vector, they can just add a map calibration feature and a
way
> to upload the map into GPS. The engine (raster to vector) is already built
> and it shouldn't be too expansive to add the rest.

Where is that engine?

Try doing a raster-to-vector conversion on a 100k topo map of a
semi-mountainous area -- replete with the contour labels, streams, place
names, terrain markings, and so forth. If you ever get to the point of
separating the contours out from this mess, you will have to assign the
contours correct heights, somewhere; and then you will have to limit the
number of segments defining each contour, so the file isn't absolutely huge.

I would guess that this process still takes a lot of human intervention.



Relevant Pages

  • Re: Help on transform a map to GIS
    ... I could mark the elevation by colors or by elevation ... there are different answers based on the complexity of your map and of the cash you have... ... assign an elevation attribute to each vector contour line and voila. ... You can use tools such as Topo to Raster, in ArcGIS, to derive an elevation surface. ...
    (comp.infosystems.gis)
  • Re: WIGs/Caspian Sea Monsters
    ... zoom out, shift the 'map and zoom in using a central mouse ... I too noticed the vehicles between the 'first' Ekroplan and the sea; ... protuberance which I'm interpreted as an engine nacelle. ...
    (sci.military.naval)
  • Re: Uh oh - what car car opinions sought - BMWs
    ... Zytec system that runs another map for the turbo and it's associated ... Half load fuel flow will be half of WOT fuel rate, ... Without load, the turbo is not activated, your engine is basically ...
    (uk.rec.cars.modifications)
  • Re: Dickhead posts about EFI!
    ... I suggest you actually watch someone mapping an ECU on a dyno, ... I do seem to remember playing with an engine on a dyno ... behold, these situations cause innumerable variations in MAP and RPM, ...
    (uk.rec.cars.modifications)
  • Re: How accurate is the elevation on US topo?
    ... some other object on the map. ... contour lines plotted on the topos. ... test better than NMAS promises. ...
    (sci.geo.satellite-nav)