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Commit r4702: show stacktrace when OutOfMemoryError occurs, helps to decide if maxjobs should be decreased or if one of the combiners is the problem
by svn commit 11 May '21

11 May '21

Version mkgmap-r4702 was committed by gerd on Tue, 11 May 2021 show stacktrace when OutOfMemoryError occurs, helps to decide if maxjobs should be decreased or if one of the combiners is the problem http://www.mkgmap.org.uk/websvn/revision.php?repname=mkgmap&rev=4702

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Commit r4704: detect duplicate roads to log a warning when the lines rules add equal routable lines for one OSM way and ignore them
by svn commit 11 May '21

11 May '21

Version mkgmap-r4704 was committed by gerd on Tue, 11 May 2021 detect duplicate roads to log a warning when the lines rules add equal routable lines for one OSM way and ignore them - Uses the code in RoadMerger to detect roads with equal attributes (type, resolution, speed, class, oneway, vehicles, ...) - Enable logging of warnings in StyledConverter to see those messages. This is not (yet) detecting two roads where all attributes are equal despite the min/max resolution. It might be changed to detect that later as this also blows up the IMG file for no good reason. Styles which add multiple roads for one OSM way should make use of mkgmap:highest-resolution-only=true anyway. http://www.mkgmap.org.uk/websvn/revision.php?repname=mkgmap&rev=4704

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Duplicate roads added by default style
by Gerd Petermann 11 May '21

11 May '21

Hi all, while double checking patch for the RoadMerger I wondered what might happen if the style adds two or more identical roads for the same OSM way. Of course this makes no sense but to my surprise I found out that this really happens with the default style. A way with e.g. highway=footway and railway=platform is added twice ... highway=footway {set tmp:stopMopUp=yes} [0x16 road_class=0 road_speed=0 resolution 23 continue with_actions] ... railway=platform [0x16 road_class=0 road_speed=0 resolution 23] Of course the default style should be fixed to avoid that but I think mkgmap can detect this easily and should print a warning when the style does that? Gerd

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patch: improve RoadMerger: allow to merge roads with reversed points
by Gerd Petermann 10 May '21

10 May '21

Hi all, up to now RoadMerger doesn't merge (combine) two roads if the have different directions. This is OK for oneway roads but I see no need for this with other roads. The attached patch changes this. It has an influence on file size (safes a few KB in each tile) and very likely also on routing, hopefully to the better/faster. It also reduces zig-zagging in the low-res-opt branch. Strangely enough almost all was already implemented, so maybe WanMil (the original author) tried that before and found a reason not to do it. Will search the archives later... Gerd

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Empty rectangles in map
by Gerd Petermann 10 May '21

10 May '21

Hi Experts, while working on the faster-mp branch I experimented with the monster relation r9488835. I added tag landuse=forest to it so that it is actually rendered and found huge (wrong) empty rectangles in the forest. The original file is very complex but the same problem also occurs with a simplified file, see http://files.mkgmap.org.uk/download/505/bad-map-split.osm.pbf Just use e.g. java -jar mkgmap.jar --gmapi bad-map-split.osm.pbf Problem: Basecamp and Mapsource don't show this map, GpsMapEdit shows a large white rectangle near 54.97743 -58.30292 I assume that we hit some unknown limit , possibly in LinePreparer or MapSplitter. I've also tried some older versions, so far they all show the problem. Any idea where to look? RgnDisplay shows this data for the problemat area: --------- Level 0, Subdiv 279 -------------------------------------------------- | | | final at 265f, (end 25e2) | | | polygon start 2634 to 265f 00002634 | 000000 | 4b | Polygon 1 | | | Type 0x4b 00002635 | 000001 | 00 00 00 | Label offset: 0x000000 () 00002638 | 000004 | d0 3b | Long delta 15312 0000263a | 000006 | 2a 3a | Lat delta 14890 | | | Start point 55.24913,-61.91139 2574796/-2885280 0000263c | 000008 | 0c | Bitstream length 12 0000263d | 000009 | bb | Base bb 0000263e | 00000a | 06 43 04 00 00 00 4c d1 | Bitstream (len: 12, 0xc) 00002646 | 000012 | 41 ef 00 00 | | | | xsame false, xneg false | | | ysame true, yneg true | | | xbase 16, ybase 15 | | | Coord 55.24913,-62.56851 2574796/-2915904 [-30624,+0] | | | Coord 54.61014,-62.56851 2545017/-2915904 [+0,-29779] | | | Coord 54.61014,-61.91139 2545017/-2885280 [+30624,+0] | | | 0 bits left, 0 | | | 0000264a | 000016 | 50 | Polygon 2 | | | Type 0x50 0000264b | 000017 | 00 00 00 | Label offset: 0x000000 () 0000264e | 00001a | d0 3b | Long delta 15312 00002650 | 00001c | b4 08 | Lat delta 2228 | | | Start point 54.97743,-61.91139 2562134/-2885280 00002652 | 00001e | 0b | Bitstream length 11 00002653 | 00001f | 9b | Base 9b 00002654 | 000020 | f2 8d 04 40 a7 fe d0 4b | Bitstream (len: 11, 0xb) 0000265c | 000028 | e7 00 00 | | | | xsame false, xneg false | | | ysame true, yneg false | | | xbase 16, ybase 11 | | | Coord 54.97743,-62.51706 2562134/-2913506 [-28226,+0] | | | Coord 55.01732,-62.54665 2563993/-2914885 [-1379,+1859] | | | Coord 55.01732,-61.91139 2563993/-2885280 [+29605,+0] | | | 4 bits left, 0 | | | Gerd

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Commit r4701: fix possible empty rectangles : overSizePolyHole_v3.patch by Ticker Berkin
by svn commit 10 May '21

10 May '21

Version mkgmap-r4701 was committed by gerd on Mon, 10 May 2021 fix possible empty rectangles : overSizePolyHole_v3.patch by Ticker Berkin "A large multipolygon (larger than the maximum size for a level 1 subdiv) exists, and is broken into some similar size pieces and some smaller pieces to expose inners/holes. The same problem can be caused by any polygons having these size properties." http://www.mkgmap.org.uk/websvn/revision.php?repname=mkgmap&rev=4701

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Commit r4700: don't add additional road for ways with combination of highway=* and railway=platform
by svn commit 10 May '21

10 May '21

Version mkgmap-r4700 was committed by gerd on Mon, 10 May 2021 don't add additional road for ways with combination of highway=* and railway=platform http://www.mkgmap.org.uk/websvn/revision.php?repname=mkgmap&rev=4700

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roundabout checks
by Mike Baggaley 07 May '21

07 May '21

Hi Gerd, Please find attached the previously discussed patch that splits checking and fixing roundabouts and flares and provides enhanced flare analysis. I note that some checks are performed when the style is being processed with others being performed later. I have not attempted to combine these - is there a technical reason for the separation, or is it just that the checks were separately developed? Thanks, Mike

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Divide number in style file
by Felix Hartmann 07 May '21

07 May '21

Is it possible to divide a number by a factor in the style file? ( mkgmap:country=CHN | mkmgap:countrz=CN | mkgmap:country=IND | mkgmap:country=IN ) & ( place=city | place=island | place=town | place=village ) & population=* {set population='${population}/7'} Did not work. I intend to divide the population in cities in China and India because otherwise cities clutter up the map there (also in India they do not use admin level ... which could be an alternative). -- Felix Hartman - Openmtbmap.org & VeloMap.org

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mkgmap r4693 , Error Seagenerator: precomp sea data seems to be wrong...
by Thomas Morgenstern 05 May '21

05 May '21

Hi, i tested mkgmap-r4693. It give many errors. *r4680 gives not such errors*. #Schwerwiegend (Seagenerator): <path to osm.pbf file' : Precompsea data seems to be wrong, land-only tile is flooded around -... see Screenshot

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