[mkgmap-dev] Incorrect runabout exit indication

Thu Oct 2 04:13:09 BST 2014

Hi Colin

>Is it possible that your Garmin only has icons for 3-6-9-12 o'clock and is "rounding off" the angle in a funny way? It may be a fraction over 180 degrees and so getting "rounded up" (wrongly) to what you see. I have looked at the OSM data for that roundabout and there is nothing wierd there as far as I can see.
No correct. My Gamin has more than the 3-6-9-12 o’clock icons.

>Also you say you are using r1919 of mkgmap. As from r3116 the internal calculations are being done in a higher resolution, to mitigate problems which can have symptoms like you are seeing. Can you try a later version(>=3116) , to see if that is any better?

I have no idea what “r1919 of mkgmap” is???
I use Lambertus' maps from http://garmin.openstreetmap.nl/

Regards
Johan

From: mkgmap-dev-bounces at lists.mkgmap.org.uk [mailto:mkgmap-dev-bounces at lists.mkgmap.org.uk] On Behalf Of Colin Smale
Sent: 30. september 2014 16:34
To: mkgmap-dev at lists.mkgmap.org.uk
Subject: Re: [mkgmap-dev] Incorrect runabout exit indication

Is it possible that your Garmin only has icons for 3-6-9-12 o'clock and is "rounding off" the angle in a funny way? It may be a fraction over 180 degrees and so getting "rounded up" (wrongly) to what you see. I have looked at the OSM data for that roundabout and there is nothing wierd there as far as I can see.

Also you say you are using r1919 of mkgmap. As from r3116 the internal calculations are being done in a higher resolution, to mitigate problems which can have symptoms like you are seeing. Can you try a later version(>=3116) , to see if that is any better?

Colin

On 2014-09-30 16:08, SPA wrote:

Greetings Andy

All roundabouts... mmm did I say so?
;)

Ok here is an example of a roundabout:
Round about position:
55.586085, 11.857095

Roundabout  approach direction:
MY 6 o'clock

To complete my journey I need to exit the roundabout at:
MY 12 o'clock

The voice in Danish guides me correctly by telling me to take the second
exit.

******************************************
The icon on the navigations window of my GPS (top left)
indicates that I have to exit the roundabout at:
MY 9 o'clock
******************************************

Screenshot of my GARMIN:
http://thecyberinn.com/garmin/22060.png

Greetings
Johan

P.S. Remember... life is not about the destination, but the amazing journey.
:)

-----Original Message-----
From: mkgmap-dev-bounces at lists.mkgmap.org.uk
[mailto:mkgmap-dev-bounces at lists.mkgmap.org.uk] On Behalf Of SomeoneElse
Sent: 30. september 2014 15:27
To: mkgmap-dev at lists.mkgmap.org.uk
Subject: Re: [mkgmap-dev] Incorrect runabout exit indication

On 29/09/2014 23:31, Peter Hendricks wrote:

Hi Andy, Johan has this problem on ALL roundabouts in OSM maps.

Well "all" is quite a lot.  He must have driven around lots of roundabouts
to test that :-)

Seriously, an example would still help - specifically to see if the
roundabouts concerned have a node shared between one road's exit flare and
another's entrance.  It would also allow other who use mkgmap themselves to
chip in and say "_my_ map does/does not have the problem at that
roundabout", to get a few more data values than 2, to try and figure out
what might be the difference that is causing the problem.

I've just tried simulating a route through a bunch of nearby roundabouts (on
an eTrex Vista HCx and a Nuvi 265W) and I'm not seeing the problem as
described - in each case the on-screen pictures (including the small one on
the Nuvi) matches the verbal direction.

I'm using "mkgmap-r1919" (quite old) and the options "--add-pois-to-areas
--remove-short-arcs --levels="0=24, 1=22, 2=21, 3=19, 4=18, 5=16" --route
--gmapsupp".

Cheers,

Andy

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