- mkgmap-dev - The mkgmap lists

Address index for multi-country map
by Bernhard Hiller 24 Nov '13

24 Nov '13

I try to build a map of Germany, Switzerland, Austria and Czech Republic with a functional address index. I downloaded the Geofabrik extracts for those countries, combined them (after conversion to o5m format) with osmconvert, split them, and create the map. The result is quite mixed: some places show up below "Country" instead of Germany, e.g. - Addresses - Spell Country: Country - Spell City: Krummennaab - Enter Street Name: (stopped here, works) whilst - Addresses - Spell Country: … [View More]

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o5m plugin for JOSM
by Gerd Petermann 22 Nov '13

22 Nov '13

Hi all, in february I wrote a plugin for JOSM to allow importing o5m files (which helps me debugging). I posted that via in the JOSM group josm-dev(a)openstreetmap.org, but I did not notice that my post did never reach that list. See http://gis.19327.n5.nabble.com/Patch-v1-o5m-support-for-JOSM-tp5749699.html The plugin worked fine for me without any changes, so if anybody interested in this I'll try to subscribe to the JOSM list. Gerd

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r2829 in the high-prec-coord branch
by GerdP 19 Nov '13

19 Nov '13

Hi all, I've coded a replacement for the removeShortArcsByMergingNodes() method, called removeWrongAngles(). It also replaces the code to beautify roundabouts. Function: 1) remove zero length arcs and 2) remove wrong angles caused by rounding to map units (both only in roads and the overlaying lines). Up to now, the method accepts errors in angles of up to 30°, maybe this is going to change. The problem with the wrong angles occurs very often in roundabouts, but also in other places (causing … [View More]

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Re: [mkgmap-dev] nicer roundabouts
by Gerd Petermann 15 Nov '13

15 Nov '13

Hi Minko, great! Thanks for the hints ! Gerd > Date: Fri, 15 Nov 2013 18:05:22 +0100 > From: ligfietser(a)online.nl > To: gpetermann_muenchen(a)hotmail.com > Subject: Re: [mkgmap-dev] nicer roundabouts > > Thanks Gerd for the fixes, it works ok now with r2825 > > > ----- Oorspronkelijk bericht ----- > > Van: "Gerd Petermann" <gpetermann_muenchen(a)hotmail.com> > > Aan: "Minko" <ligfietser(a)online.nl> > > Verzonden: Vrijdag 15 … [View More]

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Drive-on-left
by Colin Smale 15 Nov '13

15 Nov '13

Hi, In the last couple of years I have been making maps with mkgmap for both the UK and various continental countries. One problem that I have never been able to fix until now is that the "drive-on-left" flag didn't seem to have any effect on roundabouts in the UK. The "impact" is limited because roundabouts are one way anyway, but the pictographic representations of roundabouts always assume drive-on-right so you appear to be directed to drive the wrong way. I took a look at the code and … [View More]

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nicer roundabouts
by Gerd Petermann 14 Nov '13

14 Nov '13

Hi all, I've coded a new algo to detect and remove sharp angles in roundabouts caused by rounding coordinates to map units. There are many special cases, but I think it works quite well now. Please test mkgmap-high-prec-coord-r2819 . I found two typical problems: 1) Small roundabouts (radius < 10m) mapped with (too) many points, this gives ways like in 157324858_o.gpx 2) Large roundabouts (radius > 16m) mapped with too few points. Note that some of these problems cause routing … [View More]problems in the trunk version but not in the branch. I've left a lot of debugging messages in the code, so you should write the sysout to a file (I'll change the code to use the logging system later) I have also left an option --x-gpx-dir=<dir-for-gpx-files> to create gpx files showing the ways in various stages. Note that this option produces many small files, so use it only with one or a few input files. The gpx files have a name scheme: [way-id]_o.gpx: original way, once with high precision coordinates, once with the rounded values [way-id]_del1_[n]_[pass].gpx: way before a remove-point-action [way-id]_del2_[n]_[pass].gpx: way after a remove-point-action [way-id]_m.gpx: final roundabout, once with high precision coordinates, once with the rounded values, plus map unit grid You should not find many of these: [way-id]_repl_o_[pass].gpx, id]_repl_n_[pass].gpx way that is connected to a roundabout, and the move of the node causes a notable change in the angle near the roundabout. I found no case where this lead to uglyer angles, typically, the changed way was closer to the one in OSM . Open question: The algo doesn't add points to make a roundabout rounder. It just complains like this: Way http://www.openstreetmap.org/browse/way/136791460: roundabout has rather few distinct points: 9 (radius ~ 17 m) Way http://www.openstreetmap.org/browse/way/136791476: roundabout has rather few distinct points: 8 (radius ~ 20 m) Both examples also show why adding points is not a good idea. The rule for these messages : if (radius < 10.0) niceNumSides = 8; else if (radius < 13.0) niceNumSides = 12; else if (radius < 20.0) niceNumSides = 16; else niceNumSides = 20; if (points.size() < niceNumSides){ if (points.size() < 16) System.out.println(msgPref + ": roundabout has rather few distinct points: " + points.size() + " (radius ~ "+Math.round(radius)+" m)"); niceNumSides = points.size(); } Are these rules okay? Are the messages helpful? Gerd [View Less]

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test, please ignore
by Valentijn Sessink 12 Nov '13

12 Nov '13

test, please ignore

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One node - two index entries?
by Bernhard Hiller 10 Nov '13

10 Nov '13

Background: Often hotels have a restaurant also, the combination of amenity=restaurant and tourism=hotel on one node (or area) is quite common. Now the hotel should be in "Lodging - Hotel", and the restaurant somewhere in "Food and Drink". Hence my question is: is it possible to get one node into the index twice in different categories? I tried following rules: tourism=hotel & amenty!=* { name '${name|def:}(${stars}*)${operator|def:}' | '${name} ${operator}' | '${name}' | '${… [View More]

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Commit: r2815: merge the reduce-limits branch
by svn commit 09 Nov '13

09 Nov '13

Version mkgmap-r2815 was committed by gerd on Fri, 08 Nov 2013 merge the reduce-limits branch

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Multiple relations
by Anna Leuchter 09 Nov '13

09 Nov '13

Ciao Enrico, RELATIONS file ... type=route & route=bicycle { apply { set bike_relation=yes; } } type=route & (route=foot | route=hiking) { apply { set hike_relation=yes; } } ... LINES file ... highway=track & bike_relation=yes [0x01 road_class=0 road_speed=0 resolution 24 continue ] highway=track & hike_relation=yes [0x02 road_class=0 road_speed=0 resolution 24 continue ] ... You can set a tag in RELATIONS file if the way element belongs to a … [View More]

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