February 2021 - mkgmap-dev - The mkgmap lists

Re: [mkgmap-dev] Embedding raster maps
by Oliver Eichler 25 Jan '22

25 Jan '22

Hi Steve, thanks for the file. On my device nothing is visible at all. But that's kind of an information, too. There is no way to circle down bugs by simply skipping the extended part. Probably it is still some missing encoding. In the Isle of Man map (and others) there is much more information in the RGN header. Note the values in the "filling bytes". And there seems to be an additional section after the extended point2 section. I called it offset1/length2. --- RGN header --- size 007D type 47 41 52 4D 49 4E 20 52 47 4E | GARMIN RGN byte0x0000000C 01 flag 00 year 2010 month 7 day 21 hour 9 minute 53 second 6 offset1 0000D54E length1 00000000 offset_polyg2 0000D54E length_polyg2 00001A1F byte0x00000025_0x00000038 02 00 00 00 00 00 00 00 FF 00 00 20 FD FC 03 00 00 00 00 00 offset_polyl2 0000EF6D length_polyl2 00000000 byte0x00000041_0x00000054 00 00 00 00 00 00 00 00 3F 00 00 20 FD 0F 00 00 00 00 00 00 offset_point2 0000EF6D length_point2 00000000 byte0x0000005D_0x00000070 00 00 00 00 00 00 00 00 FF 07 00 20 3F F7 3F 00 00 00 00 00 offset2 0000EF6D length2 0000020B unknown 000000E3 This section has a variable length in different sub-files. The unknown value E3 can be E5, too. It doesn't seem to be a record size. I had a look at several sections. They are not completely random, thus there seem to be no "compression". However the patterns do not ring a bell for me. I copied a couple of them into a file and loaded it into my cloud share: https://www.magentacloud.de/share/s429h1z-r6 Maybe one of you has an idea what it's about. I also uploaded my current version of the test map with a single raster map tile. It does not show. Top left coordinate is N46° 57.768 E011° 47.484. Sadly I am stuck here and I am running out of quality time to concentrate on the topic. I also have to update QMapShack's decoding. While reading the mkgmap source code I noticed a lot of new stuff that is not covered by the decoder. Cheers Oliver

4 6

Please try branch check-precomp-sea
by Gerd Petermann 04 May '21

04 May '21

Hi all, I've implemented some basic checks to detect large flooded areas in the precomp-sea data in this new branch. A link to the latest binary (r4579 as of now) is a the bottom of the normal download page : http://www.mkgmap.org.uk/download/mkgmap.html - If PrecompSeaGenerator is used to calculate the sea data and the index check fails a warning is printed and the program ends with rc -1. - If mkgmap is used with a "dubious" sea.zip one or more messages about the problematic areas are written and the program stops with an ExitException unless option --x-check-precomp-sea=0 is given before the first input file. The index test is normally performed once for the whole planet, so it doesn't care about the actual tile boundaries. If e.g. only a part of Australia is flooded and you create a map for the UK you'll still see the errors. BTW: The current code (also in trunk version) doesn't support to use --precomp-sea with different values. Results are rather unpredictable. Gerd

4 4

Overview Too Big
by Mike Baggaley 03 Mar '21

03 Mar '21

Hi Gerd, The error message that mkgmap outputs when the overview map is too big is not helpful. Please find attached a patch that improves this. Cheers, Mike

2 5

internal error: found no housenumber road
by Carlos Dávila 02 Mar '21

02 Mar '21

While processing Australia I get several warnings of the form: SEVERE (HousenumberGenerator): 51690125.o5m: internal error: found no housenumber road for interpolated house http://www.openstreetmap.org/?mlat=-37.782001&mlon=144.959382&zoom=17 Looking at that area in JOSM, I see addr:interpolation lines next to a footway without a name, connecting houses with addr:street=Royal Parede, and a primary road named Royal Parede some 20 m away from the addr:interpolation lines. I guess mkgmap searches for street name in the footway (which doesn't have a name) instead of in the Royal Parade road, and thus it fails to assign housenumbers.

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Error writing overviewmap - continue at failure
by Joris Bo 01 Mar '21

01 Mar '21

Hi, I think the below error message is for writing the overview map. Of which I would not be surprised, it was a test on splitting and building a full-planet.osm map. So... no worries. But now I'm wondering if there is a way in which I could continue testing with the already generated 4.426 img-files and 4.426 ovm_work files to obtain a .tdb file, mdx files, nsis installer etc. It took 21 hours for mkgmap sofar, so it would be nice if that time spent was not useless. I used splitter with maxnodes 1.700.000 which took another 9 hours and did not give errors when building a single .img file I would like to simplify the style-file run mkgmap again on the previous output and try the create an overview map only (So without building all the img files again) and this way iterate until I found the breakpoint. 1. Would that make sense? 2. Could I enable some more error/verbose logging to obtain info about sizes/counts or whatever indicators that would help to see if my changes help in my search to a smaller overviewmap. 3. Would It make sense to not generate a MapFailedException but a warning only? So mkgmap would continue finishing the last millimeters to the finish (off course without a working overviewmap) Kind regards Joris SEVERE (MapFailedException): (thrown in BufferedImgFileWriter.ensureSize()) There is not enough room in a single garmin map for all the input data. The .osm file should be split into smaller pieces first. uk.me.parabola.imgfmt.MapFailedException: There is not enough room in a single garmin map for all the input data. The .osm file should be split into smaller pieces first. at uk.me.parabola.imgfmt.app.BufferedImgFileWriter.ensureSize(BufferedImgFileWriter.java:275) at uk.me.parabola.imgfmt.app.BufferedImgFileWriter.put(BufferedImgFileWriter.java:238) at uk.me.parabola.imgfmt.app.trergn.Polyline.write(Polyline.java:142) at uk.me.parabola.imgfmt.app.trergn.RGNFile.addMapObject(RGNFile.java:140) at uk.me.parabola.imgfmt.app.map.Map.addMapObject(Map.java:273) at uk.me.parabola.mkgmap.build.MapBuilder$ShapeAddFilter.doFilter(MapBuilder.java:1459) at uk.me.parabola.mkgmap.build.LayerFilterChain.doFilter(LayerFilterChain.java:58) at uk.me.parabola.mkgmap.filters.LinePreparerFilter.doFilter(LinePreparerFilter.java:143) at uk.me.parabola.mkgmap.build.LayerFilterChain.doFilter(LayerFilterChain.java:58) at uk.me.parabola.mkgmap.filters.RemoveEmpty.doFilter(RemoveEmpty.java:59) at uk.me.parabola.mkgmap.build.LayerFilterChain.doFilter(LayerFilterChain.java:58) at uk.me.parabola.mkgmap.filters.RemoveObsoletePointsFilter.doFilter(RemoveObsoletePointsFilter.java:142) at uk.me.parabola.mkgmap.build.LayerFilterChain.doFilter(LayerFilterChain.java:58) at uk.me.parabola.mkgmap.filters.PolygonSplitterFilter.doFilter(PolygonSplitterFilter.java:81) at uk.me.parabola.mkgmap.build.LayerFilterChain.doFilter(LayerFilterChain.java:58) at uk.me.parabola.mkgmap.build.LayerFilterChain.startFilter(LayerFilterChain.java:73) at uk.me.parabola.mkgmap.build.MapBuilder.processShapes(MapBuilder.java:1260) at uk.me.parabola.mkgmap.build.MapBuilder.makeSubdivision(MapBuilder.java:901) at uk.me.parabola.mkgmap.build.MapBuilder.makeMapAreas(MapBuilder.java:813) at uk.me.parabola.mkgmap.build.MapBuilder.makeMap(MapBuilder.java:312) at uk.me.parabola.mkgmap.combiners.OverviewBuilder.writeOverviewMap(OverviewBuilder.java:192) at uk.me.parabola.mkgmap.combiners.OverviewBuilder.onFinish(OverviewBuilder.java:105) at uk.me.parabola.mkgmap.main.Main.endOptions(Main.java:675) at uk.me.parabola.mkgmap.CommandArgsReader.readArgs(CommandArgsReader.java:125) at uk.me.parabola.mkgmap.main.Main.mainStart(Main.java:144) at uk.me.parabola.mkgmap.main.Main.main(Main.java:115) Met vriendelijke groeten, Joris Bo jorisbo(a)hotmail.com<mailto:jorisbo@hotmail.com>

5 11

Commit r4604: minor changes
by svn commit 28 Feb '21

28 Feb '21

Version mkgmap-r4604 was committed by gerd on Sun, 28 Feb 2021 minor changes - remove unused parameter - report the house number in error message "internal error: found no housenumber road for interpolated house" http://www.mkgmap.org.uk/websvn/revision.php?repname=mkgmap&rev=4604

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Commit r4603: Improve documentation (docsections2.patch by Mike Baggaley)
by svn commit 25 Feb '21

25 Feb '21

Version mkgmap-r4603 was committed by gerd on Thu, 25 Feb 2021 Improve documentation (docsections2.patch by Mike Baggaley) - Add new sections "Diagnostic options" and "POI options" http://www.mkgmap.org.uk/websvn/revision.php?repname=mkgmap&rev=4603

1 0

minor documentation improvement
by Mike Baggaley 24 Feb '21

24 Feb '21

Hi Gerd, Please find attached a patch to move some of the miscellaneous options into new sections Error checking options and POI options. There is no change to any of the actual wording. Cheers, Mike

2 3

is_in with own Tags?
by jan meisters 23 Feb '21

23 Feb '21

Hi all, I try to use is_in to fetch pois inside own invented tags, e.g.: leisure=park {add processed=yes} [0x2c06 resolution 24 continue with_actions] leisure=swimming_pool & is_in(processed,yes,in_or_on)=true {delete leisure} This fails, however „is_in(leisure,park,in_or_on)=true“ works in the example. Could someone explain where I´m wrong? Thanks Jan

4 12

Commit r4602: Improve documentation (seadoc2.patch by Mike Baggaley)
by svn commit 21 Feb '21

21 Feb '21

Version mkgmap-r4602 was committed by gerd on Sun, 21 Feb 2021 Improve documentation (seadoc2.patch by Mike Baggaley) http://www.mkgmap.org.uk/websvn/revision.php?repname=mkgmap&rev=4602

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