[mkgmap-dev] [Patch v2] sharp angles

Thu Sep 3 16:18:04 BST 2015

Hi Felix,

it's quite funny. The --adjust-turn-headings option is NOT AT ALL able to handle
multiple routable arcs for the same OSM way. For each arc at the node it changes
the headings for some of the arcs, so it probably creates all kinds of angles.

I still have to find out why the new algo in the patch doesn't help at this place.
Maybe I did not yet find all parameters that influence the result.

Gerd

Date: Thu, 3 Sep 2015 16:47:20 +0200
From: extremecarver at gmail.com
To: mkgmap-dev at lists.mkgmap.org.uk
Subject: Re: [mkgmap-dev] [Patch v2] sharp angles

okay good luck. Mind it's one of a few places where it degraded. In general I think the patch v2 is an improvement...
If you need I can search for some more places where patch v2 made things worse (however for many I think it depends on the autorouting settings). In any case it's clear - Garmin does not like such supersharp angles (and they usually don't appear for streets - only for pathes/tracks that are in "the nature").

On 3 September 2015 at 16:43, Gerd Petermann <gpetermann_muenchen at hotmail.com> wrote:

Hi Felix,

okay, no I see. 
I've created a lines file that adds the same ways that I found in your map.
When I compile the map with r3641 without --adjust-turn-headings I see the detour.
It disappears with --adjust-turn-headings.

I'll now check what --adjust-turn-headings did as it seems to be better in this case.

Gerd

Date: Thu, 3 Sep 2015 16:05:01 +0200
From: extremecarver at gmail.com
To: mkgmap-dev at lists.mkgmap.org.uk
Subject: Re: [mkgmap-dev] [Patch v2] sharp angles

sorry for so many messages - my thunderbird had some problems sending the message and copying it to sent folder...

On 3 September 2015 at 16:03, Felix Hartmann <extremecarver at gmail.com> wrote:

    Hmm, the version you downloaded is the one with patch v2 applied, 

    --adjust-turn-headings and --x-cycle-map ( but  without
    --x-fix-sharp-angles!). I actually don't even have that one
    installed. 

    I don't see the error on an older version (even older than the one
    you downloaded - that means it had --adjust-turn-headings no new
    option, and no patch applied). Map data/mkgmap split is however
    identical.

    With the newest version with correct options given and v2 patch
    (--adjust-turn-headings not given, but with --x-fix-sharp-angles and
    with --x-cyclemap and of course patch v2) it only happens in Driving
    Profile with Shorter Distance (and all avoidances deselected). With
    faster time the bug does not appear. 

    I just copied the newest version with the bug to
    openmtbmap.org/mtbaustria.exe

    if you want to try it out (timestamp is 2015-09-03)

    You're version was the one where I could not see much improvements
    but actually saw some things changed to before....

    On 03.09.2015 15:47, Gerd Petermann
      wrote:

      Hi Felix,

        I am a bit confused now. I just downloaded and installed
        mtbaustria.exe (files in it where 

        created 2015-09-02)

        and I see the error at node 2509650557 (detour and u-turn at
        node 255940422)

        What do you call the "old map" ?

        Gerd

-- 
Felix Hartman - Openmtbmap.org & VeloMap.org
Floragasse 9/11
1040 Wien
Austria - Österreich

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-- 
Felix Hartman - Openmtbmap.org & VeloMap.org
Floragasse 9/11
1040 Wien
Austria - Österreich

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