August 2013 - mkgmap-dev - The mkgmap lists

Basecamp 4.2.2 Inter-tile routing problem
by Steve Brophy 18 Aug '13

18 Aug '13

Has anyone experienced problems with the latest version of Basecamp routing across OSM tiles? If I have Routing configured to avoid Interstates, I get large detours. With Interstates not avoided, routing works as before. It doesn't matter whether the transportation method is Car or Bicycle. See attached for an example. I get the problem for every route I have tried crossing a tile boundary. Steve

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Converting S-57/ENC -> Garmin Format?
by Nick Hughes 17 Aug '13

17 Aug '13

Hi Folks, I'm looking for a method to convert S-57/ENC NOAA marine charts to Garmin format. I suspect similar functionality would also be useful for pulling this data into OSM format as well. NOAA updates their vector based charts regularly, so it's a good data source now. My research has shown there doesn't exist a utility to do this and I'm considering developing a utility. I'm a software developer and reviewed mkgmap, GDL ogr and OpenCPN, all of which have some of the functionality to put this together. The mkgmap Java source is pretty extensive and well organized, so I'm hoping to start with this as a basis or add to the project. It looks like the an S-57 "reader" would be required to get the data through mkgmap. So a new reader would be created in mkgmap.reader.s57. I'm also noticing a more code for "sea" in sea.optional. Any reason why this requires different algorithm for conversion? I see there are dependencies on Geotools, however unsure why. I'm new at the whole map processor, however am willing to learn. Any pointers are appreciated. Thanks, Nick

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bridges as polygons
by nwillink 15 Aug '13

15 Aug '13

Interesting to see that Garmin caters for bridges as polygons (surface cover areas) with HGT_DP as an additional height attribute. This would/could avoid the old draworder problem of lines. At the moment it seems mkgmap does not allow for such a possibility. It made be think about the following: polygons can get parsed as lines , ie pedestrian,forest etc but lines ,however thick, can not be parsed as polygons, unless they are drawn as polygons. Just a thought. -- View this message in context: http://gis.19327.n5.nabble.com/bridges-as-polygons-tp5773691.html Sent from the Mkgmap Development mailing list archive at Nabble.com.

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Commit: r2669: Ignore a Comment= directive in a TYP.txt file.
by svn commit 14 Aug '13

14 Aug '13

Version 2669 was committed by steve on Wed, 14 Aug 2013 Ignore a Comment= directive in a TYP.txt file.

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Commit: r2668: PartFilter extract 1) from end, 2) initial and final ranges.
by svn commit 13 Aug '13

13 Aug '13

Version 2668 was committed by steve on Tue, 13 Aug 2013 PartFilter extract 1) from end, 2) initial and final ranges. Use negative numbers to take a part from the tail of the value list. Use the "<" or ">" operator (in addition to ":") in order to return a concatenation of all the parts before or after a certain part. The default behavior is not changed and this come at the expense of just 2 logical "IF" more when no operators are specified. Example, if the value is "Aa#Bb#Cc#Dd#Ee" part:#:1 returns Aa part:#:-1 returns Ee part:#:-2 returns Dd part:#>1 returns Bb#Cc#Dd#Ee# part:#<5 returns Aa#Bb#Cc#Dd# part:#<-1 returns Aa#Bb#Cc#Dd# - Enrico Liboni

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Commit: r2667: Documentation: Add sample values for conversion between garmin units ^ 2 and m^2
by svn commit 13 Aug '13

13 Aug '13

Version 2667 was committed by wanmil on Tue, 13 Aug 2013 Documentation: Add sample values for conversion between garmin units ^ 2 and m^2

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Commit: r2666: The script that created the options documentation on website.
by svn commit 13 Aug '13

13 Aug '13

Version 2666 was committed by steve on Tue, 13 Aug 2013 The script that created the options documentation on website. The result might require fixing up by hand afterwards,

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Commit: r2665: There is another drive-on-the-left flag.
by svn commit 13 Aug '13

13 Aug '13

Version 2665 was committed by steve on Tue, 13 Aug 2013 There is another drive-on-the-left flag. There is also a drive on the left flag in the poi display flags in the TRE header. - Colin Smale

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should mtb:scale=0 get the unpaved flag?
by Minko 12 Aug '13

12 Aug '13

Hi, I noticed there are many well paved roads tagged with mtb:scale=0 which are automatically converted into unpaved by mkgmap. Combinations like mtb:scale=0 & surface=asphalt or mtb:scale=0 & tracktype=grade1 should imho not get a tag mkgmap:unpaved=1 Maybe set it to mtb:scale>0 ? # Flag unpaved roads. highway=* & (surface=cobblestone | surface=compacted | surface=dirt | surface=earth | surface=grass | surface=grass_paver | surface=gravel | surface=grit | surface=ground | surface=mud | surface=pebblestone | surface=sand | surface=unpaved | mtb:scale=* | tracktype ~ 'grade[2-6]' | smoothness ~ '.*(bad|horrible|impassable)' | sac_scale ~ '.*(mountain|alpine)_hiking' | sport=via_ferrata) { add mkgmap:unpaved=1 } (highway=bridleway | highway=path | highway=track | highway=unsurfaced) & surface!=* & tracktype!=* & smoothness!=* & sac_scale!=* { add mkgmap:unpaved=1 }

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[PATCH v1] garmin_area() style function
by WanMil 10 Aug '13

10 Aug '13

The patch adds a new style function called garmin_area(). garmin_area() returns the size of an area in garmin-units ^2. It works for polygons only. Unclosed ways return 0. Please test it and let me know: * Do you have a better name? * What to do with multipolygons? Should garmin_area() return the multipolygon size for all splitted parts of the mp? or: Should it be possible to use garmin_area() in the relations file? In this case it would be possible to add tags to all members which can then be used in the polygons file. Example: type=multipolygon & building=yes & garmin_area() > 20000 { apply { set mkgmap:bigbuilding=yes; } } Have fun! WanMil

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