[mkgmap-dev] splitter r250 and open questions reg. bounding polygon

Fri Nov 30 09:52:59 GMT 2012

Am 30.11.2012 10:04, schrieb GerdP:
> Hi all,
>
> r250 fixes a performance issue that shows up if you use --keep-complete in
> combination with a max-areas value which is lower than the actual number of
> tiles (including the "pseudo-tiles").
>
> Open problems/questions regarding complex bounding polygons:
> r247 uses such a polygon without problems, but it doesn't try to fit the
> tiles into the polygon. r248 and above always try to fit the tiles into the
> polygon and they stop if that
> is too difficult. I think it would be better to use a compromise:
> - try to fit into the polygon, if that isn't possible, use it only to "blank
> out" areas outside of the polygon
> and allow tiles to (heavily) overlap the polygon. In such a case a warning
> message should be issued and the resulting shape of the tiles could be
> output to a file, e.g. areas.poly. (I think that is what Felix suggested?)
> An alternative would be to use use a new parameter: --fit-into-polygon=true
> would tell splitter that
> the user does not want the result if it doesn't fit into the polygon, so it
> is allowed to stop with an error message if that's not possible.
>
> Other ideas?
I would suggest, that the polygon would better, if you create it by 
yourself. Eg. use --write-kml, open it in josm and create a 
bounding-polygon (create a way arround the map and then make it smaller 
with "create area" (x). Then save the created polygon as poly-File. 
You'll need poly and opendata plugin for josm.

Henning