- mkgmap-dev - The mkgmap lists

Commit: r1275: Fill in the extra header values separately and
by svn commit 12 Oct '09

12 Oct '09

Version 1275 was commited by steve on 2009-10-11 22:24:36 +0100 (Sun, 11 Oct 2009) BRANCH: mdr Fill in the extra header values separately and controlled by the section class itself. These values appear to control what fields appear in the section records and their sizes. I have confirmed by contstructing maps that the bottom two bits of the MDR 5 extra value are the size of the local city field in mdr5 minus one, ie they are zero for a size of one. This worked for all values of the bottom two bits. The next two bits appear to relate the3byte label field, but here only three (for the full size of the field) and zero for its complete absence appear to work. Anyway small maps now work.

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[PATCH v4] - tweeze arc headings to improve routing instructions
by Mark Burton 11 Oct '09

11 Oct '09

v4 - now writes arc curve data that encodes the final heading of an arc. This should yield better quality routing instructions when an arc's final heading differs greatly from its initial heading. At this time, only single byte curve data is being written and the format of that is not 100% confirmed but it's looking plausible (possible doubt over ordering of lower 3 bits). The --adjust-turn-headings option does not enable/disable the writing of curve data. If you want to disable the writing of curve data use the temporary option --no-arc-curves. This option will probably disappear when the curve data has proven to be reliable. I have tested this with the GB map and it didn't break the routing. I was getting good quality routing instructions (with the --adjust-turn-headings option). All feedback appreciated. -------------------------- v3 - now based on r1265. Added --adjust-turn-headings option to enable this functionality. Reports now downgraded to info (from warn). ------------------------ v2 - various changes - should now work with junctions that have more than 1 side road - should be able to treat exits from roundabouts in the same way as side roads. ------------------------- The attached patch (which also includes the drive-on-left patch because it's based on that) attempts to improve the quality of routing instructions so that when a turn off a road that doesn't involve a big heading change is required, the GPS should say "turn left/right" rather than "keep left/right". It can also reduce the number of "keep left/right" instructions you get when you are not leaving the main road but passing a junction that has a shallow turn (e.g. sometimes happens on motorways when it tells you to keep left/right even though you are not leaving the motorway). I have tested it a little and it appears to work. I expect there are situations where it does the wrong thing so it would be great if people could give it a go and see if it behaves OK. There isn't any option to enable the feature at the moment. If you use the patch, it will be enabled. It's currently issuing a warning for each change it makes but later that can be downgraded to info. Cheers, Mark

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routing problem (car on footway)
by Chris-Hein Lunkhusen 10 Oct '09

10 Oct '09

Hello, I don't find out why my map is car-routing over a footway: <http://img188.imageshack.us/img188/881/route1j.png> top: my map bottom: lambertus routable start: N51.44923 E7.25915 end: N51.44972 E7.29225 In my style I have following rules for foot- and cycleways: highway=path & (bicycle=designated | bicycle=official | bicycle=yes) {set highway = cycleway} highway=pedestrian & area!=yes & area!=true & area!=1 {add motorcar=no; add bicycle=no; add taxi=no; add emergency=no} [0x0a road_class=0 road_speed=0 resolution 22] highway=cycleway {add motorcar = no} [0x16 road_class=0 road_speed=1 resolution 22] highway=footway {add bicycle=no; add taxi=no; add emergency=no; add motorcar=no} highway=footway | highway=path {add motorcar=no} [0x0d road_class=0 road_speed=0 resolution 22] Any error in here? (mkgmap version from 28-Sep-2009) Chris

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Commit: r1269: Fix working out the name that belongs to a city and also
by svn commit 10 Oct '09

10 Oct '09

Version 1269 was commited by steve on 2009-10-09 23:05:53 +0100 (Fri, 09 Oct 2009) BRANCH: mdr Fix working out the name that belongs to a city and also fetch the correct city for POIs that have an associated city.

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Commit: r1274: Open the files to be included in gmapsupp.img using read-only mode.
by svn commit 10 Oct '09

10 Oct '09

Version 1274 was commited by markb on 2009-10-10 18:42:14 +0100 (Sat, 10 Oct 2009) Open the files to be included in gmapsupp.img using read-only mode. It was opening the files using read-write mode but that fails if any files are not capable of being written. As the files are not going to be written while producing gmapsupp.img, just open them read only.

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mkgmap minor bug: TYP file is opened in readwrite mode
by Andre Hinrichs 10 Oct '09

10 Oct '09

Hi List! I just accidentally found an issue in mkgmap. When creating a gmapsupp.img with a TYP file, mkgmap throws an exception if this file is readonly. When the TYP file is writable, this exception is not thrown. But I think, that mkgmap should never write to a TYP file, should it? Here is, what current mkgmap (r1273) says if TYP file is write protected: > Exception in thread "main" uk.me.parabola.imgfmt.ReadFailedException: Couldnot open ANHI.TYP > at uk.me.parabola.imgfmt.sys.FileImgChannel.<init>(FileImgChannel.java:43) > at uk.me.parabola.mkgmap.combiners.GmapsuppBuilder.addFile(GmapsuppBuilder.java:188) > at uk.me.parabola.mkgmap.combiners.GmapsuppBuilder.addAllFiles(GmapsuppBuilder.java:161) > at uk.me.parabola.mkgmap.combiners.GmapsuppBuilder.onFinish(GmapsuppBuilder.java:110) > at uk.me.parabola.mkgmap.main.Main.endOptions(Main.java:361) > at uk.me.parabola.mkgmap.CommandArgsReader.readArgs(CommandArgsReader.java:124) > at uk.me.parabola.mkgmap.main.Main.main(Main.java:118) > Caused by: java.io.FileNotFoundException: ANHI.TYP (Permission denied) > at java.io.RandomAccessFile.open(Native Method) > at java.io.RandomAccessFile.<init>(RandomAccessFile.java:212) > at java.io.RandomAccessFile.<init>(RandomAccessFile.java:98) > at uk.me.parabola.imgfmt.sys.FileImgChannel.<init>(FileImgChannel.java:41) > ... 6 more This is only a minor bug, since no real write operations seem to be done to the TYP file. Regards Andre

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Index on small maps
by Steve Ratcliffe 10 Oct '09

10 Oct '09

Hi I've found that if I change the integer value after the section 5 pointers in the main mdr header from 0x1d to 0x1c then small maps appear to work fine. Unfortunately large maps crash on startup with that value. Of course I don't know how to select between the two values yet, so I can't check anything in. I will experiment to see if I can tell what the difference is, but if anyone has any ideas please let us know. It is also true that all of the values after the section pointers apart from section 15 are unknown, so they are all worth investigating. ..Steve

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Commit: r1273: Issue warning if a roundabout is also tagged as reverse oneway.
by svn commit 10 Oct '09

10 Oct '09

Version 1273 was commited by markb on 2009-10-10 14:37:05 +0100 (Sat, 10 Oct 2009) Issue warning if a roundabout is also tagged as reverse oneway. Given that the roundabout's direction is determined by the order of its points, the oneway tag should be considered superfluous. However, if it has been tagged as reverse oneway, it probably means that the roundabout has been drawn backwards. To help identify those backward roundabouts, we now issue a warning if a roundabout has been tagged reverse oneway.

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Commit: r1272: Revert "Ignore oneway tag (specifically, reverse or -1) when way is a roundabout."
by svn commit 10 Oct '09

10 Oct '09

Version 1272 was commited by markb on 2009-10-10 14:03:55 +0100 (Sat, 10 Oct 2009) Revert "Ignore oneway tag (specifically, reverse or -1) when way is a roundabout." Hmm, perhaps this will cause more trouble than it's worth.

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Commit: r1271: Ignore oneway tag (specifically, reverse or -1) when way is a roundabout.
by svn commit 10 Oct '09

10 Oct '09

Version 1271 was commited by markb on 2009-10-10 13:11:51 +0100 (Sat, 10 Oct 2009) Ignore oneway tag (specifically, reverse or -1) when way is a roundabout. Roundabout direction is specified by the order of the points in the way. The oneway tag is superfluous.

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