[mkgmap-dev] [PATCH] contour lines v2

Sat Jul 4 21:35:04 BST 2009

Dear all,

thank you for your feedback! I changed two points:
- Using the option --dem-maxlevels  you can specify the maximum number 
of levels created (the increment is doubled untils this restriction 
holds). The default is 100.
- Now the OSM styling engine is used to set labels, types & resolution 
of the contour lines.

>   output osm format data from the DEM (for other use, or later use, or
>   for intermediate reprocessing)
>   
Actually this was the way my code worked before, but I don't like the 
size of the created osm files.
>   make an img that's transparent with the DEM data, not only for
>   licensing reasons but also because it really seems like something the
>   user would want to flip off sometimes.
I would like to implement that - can one of the experts please give me a 
hint how I create an IMG file from a MapDataSource?
Right now, I plugged my code into the addBackground method of 
MapperBasedMapDataSource. It would be now problem to create a MapDetails 
object containing only the contour lines, but how can I write this into 
an IMG file?
I looked at the MapBuilder code, and it seems the makeMap method there 
needs a LoadableMapDataSource. But I don't want to implement a 
load(String fileName) method ...

Best wishes
Christian
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