[mkgmap-dev] Similar Arcs

Fri May 21 23:51:08 BST 2021

Hi Gerd,

Please find attached the patch for deleting similar arcs. It uses a new
mkgmap:nooverlap tag which can be set to a number between 0 and 127 (default
0) in the lines file. If set to a number greater than zero then the
overlapping part of the line will be deleted if it overlaps another line,
providing the access of the other line is a superset of its access. If both
lines have non zero values and have the same access then the line with the
higher value will be deleted.

In my style file I have the following:

highway=service & (area=yes | mkgmap:mp_created=true) & (foot=yes |
foot=designated | foot=official | foot=permissive | (foot!=* & (access!=* |
access=yes | access=permissive))) {set mkgmap:car=no; set mkgmap:bicycle=no;
set foot=yes; set mkgmap:flare-check=no; set mkgmap:numbers=false; set
mkgmap:set_unconnected_type=none; set mkgmap:set_semi_connected_type=none;
set mkgmap:nooverlap=1} [0x13 road_class=0 road_speed=0 resolution 22]

highway=pedestrian & (area=yes | mkgmap:mp_created=true) & (foot=yes |
foot=designated | foot=official | foot=permissive | (foot!=* & (access!=* |
access=yes | access=permissive))) {set mkgmap:car=no; set mkgmap:bicycle=no;
set foot=yes; set mkgmap:flare-check=no; set mkgmap:numbers=false; set
mkgmap:set_unconnected_type=none; set mkgmap:set_semi_connected_type=none;
set mkgmap:nooverlap=1} [0x0d road_class=0 road_speed=0 resolution 22]

amenity=parking & (parking!=* | parking=surface) & (foot=yes |
foot=designated | foot=official | foot=permissive | (foot!=* & (access!=* |
access=yes | access=permissive))) {set mkgmap:car=no; set mkgmap:bicycle=no;
set foot=yes; set mkgmap:numbers=false; set
mkgmap:set_unconnected_type=none; set mkgmap:set_semi_connected_type=none;
set mkgmap:nooverlap=2; set mkgmap:delivery=no; set mkgmap:truck=no; set
mkgmap:bus=no; set mkgmap:taxi=no; set mkgmap:emergency=no } [0x08
road_class=0 road_speed=0 resolution 24 continue]

and similar for railway=platform, man_made=pier, man_made=jetty and
leisure=slipway.

Cheers,
Mike
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