Re: Autorouting in gpsmap60cs

From: John S (pitdigger_at_comcast^dot^net)
Date: 11/27/04 

Date: Sat, 27 Nov 2004 09:47:41 -0500

On Sat, 27 Nov 2004 21:20:02 +1300, "John Dekker" <jdekker@xtra.co.nz>
wrote:

>I am finding in my New Zealand maps that the Autorouting does not use the
>streets very efficiently but rather draws the purple line quite a bit of the
>streets. Is this a problem with the maps maybe not supporting the Routing
>feature or is it a deficiency of the 60cs.
>
>Comments appreciated.
>
>Regards,
>John Dekker
>
First off, I am in the US and use a 60C with City Select.

I have not noticed anything in the auto routing "not following a street"
that would draw my attention to it. By comparison, it seems to do just as
well as a laptop using Delorme Street Atlas or Microsoft Streets. Maybe even
a little better than Delorme.

I have some other questions on auto routing though:

Just for the fun of it, I set a waypoint for my office which is about 10
miles from my home and another for my home.

When I route to my office from home, it chooses a route that takes me down a
neighborhood street that runs parallel to the street I normally take. On the
way home, it routes me on the other street.

For the same start and destinations, why would it calculate a different
route in coming and going between the two? The difference in route distance
only amounts to a couple hundred yards at best.

Just seems strange to me. I have noticed the differing routing on longer
trips too in going back and forth between 2 points.

Just a curiosity to me as I use those routes on a regular basis and am at a
loss as to why it would choose different routes depending on the direction
of travel.

Have you noticed that phenomena?

Regards
John S

Relevant Pages

  • Re: Best/Cheapest GPS with Auto Routing
    ... The Garmins also offer options for auto routing, such as fastest or shortest ... route, as well as the options for avoiding highways, one ways, and U turns. ...
    (sci.geo.satellite-nav)
  • Re: Used Europe Map?
    ... > It's not really auto routing with Metroguide Europe. ... > select Start and Arrival points, and Metroguide compute a route. ... that I would have with me would be my digital camera and my GPS. ...
    (sci.geo.satellite-nav)