Our current coverage is getting detailed. I'm thinking of removing certain buildings given a unit area threshold. For example: - remove all building=yes given a threshold of x m^2 - convert buildings as points if a name or address tag exist - retain buildings as polygons if > x m^2 Is this possible with the current mkgmap versions? Thanks! -- cheers, maning ------------------------------------------------------ "Freedom is still the most radical idea of all" -N.Branden wiki: http://esambale.wikispaces.com/ blog: http://epsg4253.wordpress.com/ ------------------------------------------------------
On Wed, May 09, 2012 at 08:55:49PM +0800, maning sambale wrote:
Our current coverage is getting detailed. I'm thinking of removing certain buildings given a unit area threshold. For example: - remove all building=yes given a threshold of x m^2 - convert buildings as points if a name or address tag exist - retain buildings as polygons if > x m^2
Is this possible with the current mkgmap versions? Thanks!
I don't think we have any such primitives for areas. It could be handy. Omitting small areas should be much cheaper than merging adjacent areas. Marko
Am 09.05.2012 14:55, schrieb maning sambale:
Our current coverage is getting detailed. I'm thinking of removing certain buildings given a unit area threshold. For example: - remove all building=yes given a threshold of x m^2 --min-size-polygon=NUM Removes all polygons smaller than NUM from the map. This reduces map size and speeds up redrawing of maps. Recommended value is 8 to 15, default is 8.
- convert buildings as points if a name or address tag exist --add-pois-to-areas Generate a POI for each polygon and multipolygon. The POIs are created after the relation style but before the other styles are applied. Each POI is tagged with the same tags of the area/multipolygon. Additionally the tag mkgmap:area2poi=true is set so that it is possible to use that information in the points style file. Artifical polygons created by multipolyon processing are not used. The POIs are created at the following positions (first rule that applies): polygons: * the first node tagged with a tag defined by the pois-to-areas-placement option * the center point multipolygons: * the node with role=label * the center point of the biggest area
Does this solve your problems? Henning
Thank you. Will try this and report outcomes. On Wed, May 9, 2012 at 11:42 PM, aighes <osm@aighes.de> wrote:
Am 09.05.2012 14:55, schrieb maning sambale:
Our current coverage is getting detailed. I'm thinking of removing certain buildings given a unit area threshold. For example: - remove all building=yes given a threshold of x m^2 --min-size-polygon=NUM Removes all polygons smaller than NUM from the map. This reduces map size and speeds up redrawing of maps. Recommended value is 8 to 15, default is 8.
- convert buildings as points if a name or address tag exist --add-pois-to-areas Generate a POI for each polygon and multipolygon. The POIs are created after the relation style but before the other styles are applied. Each POI is tagged with the same tags of the area/multipolygon. Additionally the tag mkgmap:area2poi=true is set so that it is possible to use that information in the points style file. Artifical polygons created by multipolyon processing are not used. The POIs are created at the following positions (first rule that applies): polygons: * the first node tagged with a tag defined by the pois-to-areas-placement option * the center point multipolygons: * the node with role=label * the center point of the biggest area
Does this solve your problems?
Henning
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-- cheers, maning ------------------------------------------------------ "Freedom is still the most radical idea of all" -N.Branden wiki: http://esambale.wikispaces.com/ blog: http://epsg4253.wordpress.com/ ------------------------------------------------------
participants (3)
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aighes -
maning sambale -
Marko Mäkelä