- mkgmap-dev - The mkgmap lists

Commit: r1450: Add help blurb for --generate-sea.
by svn commit 31 Dec '09

31 Dec '09

Version 1450 was commited by markb on 2009-12-31 12:08:38 +0000 (Thu, 31 Dec 2009) Add help blurb for --generate-sea.

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Commit: r1448: Added makeFakeId() to remove duplicate code.
by svn commit 31 Dec '09

31 Dec '09

Version 1448 was commited by markb on 2009-12-31 11:59:57 +0000 (Thu, 31 Dec 2009) Added makeFakeId() to remove duplicate code.

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[PATCH v3] - provide alternative sea drawing mechanism
by Mark Burton 31 Dec '09

31 Dec '09

v3 - generate land poly even if tile doesn't contain any sea (when --generate-sea=no-mp is specified) so that GPS units that ignore the colour of the background poly (0x4b) don't the wrong background colour. --------- v2 - avoid generating sea poly when unclipped tile contains coastline but the clipped tile contains no coastline. --------- Firstly, I would like to thank everyone who responded to my "Understanding the sea" post. From those posts and my own study, I finally worked out what it does. And yes, it works pretty well inasmuch that it generates some useful polygons. The "sea sector" heuristic doesn't work for me so I have been disabling it. The problem is, the end result is "butt ugly". Our MP implementation really can't do a good job on zillions of little islands. After frigging around for a couple of days trying to improve the visual quality, I tried the obvious alternative technique of not using a MP but, instead, just having a sea background and then put the land on top using plain polygons. Guess what? It works very nicely as the attached pics show. I now have a splendid map of the Baltic area (OK it's weird at the edges but that's not a problem for now). Here's the (future) commit comment for this patch: Provide an alternative to using a multipolygon when generating the sea. The --generate-sea option can now take a comma separated list of values: no-mp - don't generate the sea using a multipolygon - instead, generate a background sea polygon and then individual land polygons with tag natural=land. This requires a suitable land polygon type to be defined in the style file (suggested type is 0x010100) and the polygon must be defined in the TYP file as having a higher drawing level than the sea polygon type. no-sea-sectors - disable the generation of "sea sectors" when the coastline fails to reach the tile's boundary. With no values specified, the --generate-sea option should work as before. Oh yes, this patch doesn't include it, but I am also disabling the DP code for polygons as it makes them weird. Cheers and thanks again for the helpful postings. Mark

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[PATCH v2] - provide alternative sea drawing mechanism
by Mark Burton 30 Dec '09

30 Dec '09

Firstly, I would like to thank everyone who responded to my "Understanding the sea" post. From those posts and my own study, I finally worked out what it does. And yes, it works pretty well inasmuch that it generates some useful polygons. The "sea sector" heuristic doesn't work for me so I have been disabling it. v2 - avoid generating sea poly when unclipped tile contains coastline but the clipped tile contains no coastline. --------- The problem is, the end result is "butt ugly". Our MP implementation really can't do a good job on zillions of little islands. After frigging around for a couple of days trying to improve the visual quality, I tried the obvious alternative technique of not using a MP but, instead, just having a sea background and then put the land on top using plain polygons. Guess what? It works very nicely as the attached pics show. I now have a splendid map of the Baltic area (OK it's weird at the edges but that's not a problem for now). Here's the (future) commit comment for this patch: Provide an alternative to using a multipolygon when generating the sea. The --generate-sea option can now take a comma separated list of values: no-mp - don't generate the sea using a multipolygon - instead, generate a background sea polygon and then individual land polygons with tag natural=land. This requires a suitable land polygon type to be defined in the style file (suggested type is 0x010100) and the polygon must be defined in the TYP file as having a higher drawing level than the sea polygon type. no-sea-sectors - disable the generation of "sea sectors" when the coastline fails to reach the tile's boundary. With no values specified, the --generate-sea option should work as before. Oh yes, this patch doesn't include it, but I am also disabling the DP code for polygons as it makes them weird. Cheers and thanks again for the helpful postings. Mark

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mkgmap dropping ways on multipolygon boundary "outer"
by Felix Hartmann 30 Dec '09

30 Dec '09

Have a look here, wherever the boundaries use the same way as the ways, the ways get dropped, even if not rendering the boundaries at all (removing any reference to boundary from the style-file). Is this maybe a geofabrik error, or some error in mkgmap multipolygon handling? I have noticed many (all that I checked) mkgmap maps suffer from missing roads in this example. (anyhow I don't render boundaries >admin_level=6) http://www.openstreetmap.org/?lat=48.03113&lon=16.88459&zoom=16&layers=B000… Seems to be a bug in the Multipolygon Code.

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Commit: r1447: First iteration of impmenting the MultiPoloygonRelation class according to the algorithm described in http://wiki.openstreetmap.org/wiki/Relation:multipolygon/Algorithm.
by svn commit 30 Dec '09

30 Dec '09

Version 1447 was commited by steve on 2009-12-30 14:36:23 +0000 (Wed, 30 Dec 2009) BRANCH: mp First iteration of impmenting the MultiPoloygonRelation class according to the algorithm described in http://wiki.openstreetmap.org/wiki/Relation:multipolygon/Algorithm. - WanMil

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Commit: r1446: A multipolygon branch.
by svn commit 30 Dec '09

30 Dec '09

Version 1446 was commited by steve on 2009-12-30 14:32:19 +0000 (Wed, 30 Dec 2009) BRANCH: mp A multipolygon branch.

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Libraries
by Nakor 30 Dec '09

30 Dec '09

Hello, Some libraries in my area are mapped as buildings (areas) and do not show up in the search. I added the line amenity=library [0x2c03 resolution 21] to polygons in the style. Is this the way do do it or can we tell it some way to look in the points files? Also can we have this by default in the style? Thanks, N.

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Commit: r1445: Hide underground railways. Map railway=abandoned to highway=track.
by svn commit 29 Dec '09

29 Dec '09

Version 1445 was commited by marko on 2009-12-29 09:45:48 +0000 (Tue, 29 Dec 2009) Hide underground railways. Map railway=abandoned to highway=track.

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Commit: r1444: Treat disused ways and ways under construction as minor paths.
by svn commit 29 Dec '09

29 Dec '09

Version 1444 was commited by marko on 2009-12-29 09:30:44 +0000 (Tue, 29 Dec 2009) Treat disused ways and ways under construction as minor paths.

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