August 2012 - mkgmap-dev - The mkgmap lists

"ghost" map entries with Oregons?
by Thorsten Kukuk 15 Aug '12

15 Aug '12

Hi, from time to time I get the report that on Oregons, my basemaps are shown twice in the map list. One entry contains an empty map, one the normal expected one. It looks like this happens only with "older" Oregons, all reports I have where I'm sure it's the Oregon 300 modell. Does anybody know this effect and why it happens or even better has a solution for it? Thorsten -- Thorsten Kukuk, Project Manager/Release Manager SLES SUSE LINUX Products GmbH, Maxfeldstr. 5, D-90409 Nuernberg GF: Jeff Hawn, Jennifer Guild, Felix Imendörffer, HRB 16746 (AG Nürnberg)

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Feature request for Splitter
by Lambertus 13 Aug '12

13 Aug '12

This is a request for a new Splitter method. It would greatly speed-up my map generation if Splitter could use a split-count parameter that tells Splitter to output N tiles instead of having to manipulate the max-nodes and max-ways parameters to get the required amount of split results. Background: My scripts initially split the world using a high max-nodes parameter in order to create the tiles as large as possible. When rendering of a split result fails (or the resulting Garmin image is larger then 8MB) then Splitter is called with a decreasing amount of max-nodes until the split action results in two or more tiles. For each split action the max-nodes count is reduced with 100k nodes. For some areas, like Paris in France, the initial tile is split about 15-16 times before the result is successfully rendered and passes all tests. This takes a lot of time while most sub-splits result in only a single tile until the max-nodes is reduced from 1.400.000 to less then 100.000. So the amount of split actions would be greatly reduced if Splitter could simply be told to return 2 (or more) tiles.

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Basecamp 4 disabling routing
by n Willink 11 Aug '12

11 Aug '12

It seems the latest basecamp beta 4 has disabled any routing created with mkgmap. Interestingly, the same happens on Mapsource which seems to imply that the culprit, is shared by both programs. Topo Maps are not affected which seems to imply 'a' flag in the img hasn't been set. More importantly, is this the way ahead' for Garmin with firmware updates disabling routing? -- View this message in context: http://gis.19327.n5.nabble.com/Basecamp-4-disabling-routing-tp5720334.html Sent from the Mkgmap Development mailing list archive at Nabble.com.

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Commit: r2313: Recognise && and || as a single symbol and give an useful error if they occur.
by svn commit 09 Aug '12

09 Aug '12

Version 2313 was commited by steve on 2012-08-09 11:47:25 +0100 (Thu, 09 Aug 2012) Recognise && and || as a single symbol and give an useful error if they occur.

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Finding administrative areas
by Roger Calvert 08 Aug '12

08 Aug '12

A bit of advice, please, if anyone can help. How can one obtain information on the administrative area (e.g. county) an object is in in the style files? For example, I would like to find out if an object is in Cumbria or Lancashire. Some objects have "is_in" tags, but most do not. Such information should be accessible from the surrounding boundaries. Can I access this information in a style file? Thanks, Roger -- ------------------------------------------------------------------------ Roger Calvert ------------------------------------------------------------------------

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creating garmin map layer from gpx tracks
by Andreas B. Mundt 08 Aug '12

08 Aug '12

Hi, I am trying to create a transparent garmin gmapsupp.img layer from gpx tracks. The idea is to merge this layer (it contains special cycle routes) in the end with another gmapsupp.img containing the map. I did the following: Load all tracks in josm, convert to a data layer and tag the tracks highway=cycleway. Then save as paths.osm. Use the command mkgmap --gmapsupp --transparent --remove-short-arcs --style-file=XXXX paths.osm to convert the data to a gmapsupp.img file. As style file I use the stuff that is used to create the map containing all other data. However, the gmapsupp.img created from the tracks looks like empty if loaded onto the GPS device, nothing shows up, as if the map covers no area at all. What's wrong with my approach? How can that be done? Many thanks in advance, Andi

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_link roads speed limit needs increasing
by Peter Hendricks 08 Aug '12

08 Aug '12

Travelling down highway 32, then 329 in Thailand recently I was told to do a U-turn, then use a dirt track, rather than the ramp that linked to h'way 329. Try routing yourself in Mapsource or Basecamp at N14 27.106 E100 32.322. It should look like something in this pic: https://dl.dropbox.com/u/30711166/OSM.T.jct.32-329-route.prob.jpg The route chosen by both GPSr & Mapsource is actually longer than simply following the ramp, but it avoids the ramps. The ramps were drawn as secondary_link which in the Garmin map becomes low-speed ramp with speedlimit 20 and RC=2. The U-turn is a trunk_link => principal h'way, SL=90, RC=4. The dirt track has SL=20, RC=0. It looks like the Route Class is less important here than the SL: by following the main route you only travel for a short distance over a slow road (the track), whereas the ramps are quite long. Mathematically this would make for a quicker trip. To avoid people being routed off main highways I propose that ramps mapped from secondary_link get the same SL as secondary and that the speed limits on the other links are reviewed. Regards, Peter.

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Commit: r2312: MKG-1 Better error message for style file errors
by svn commit 07 Aug '12

07 Aug '12

Version 2312 was commited by steve on 2012-08-07 20:05:16 +0100 (Tue, 07 Aug 2012) MKG-1 Better error message for style file errors

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