Viewing 15 posts - 1 through 15 (of 22 total)
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  • #20173
    JohnPercy
    JohnPercy
    Participant

    At present the names for larger islands do not show on the maps. As far as I can see this is because larger islands are multipolygon relations. Would it make sense to treat them in the same way as (for example) desert, forest, wood, orchard, glacier, mountain_range, mountain_area etc.?
    See https://wiki.openstreetmap.org/wiki/Tag:place%3Disland#Large_islands and https://www.openstreetmap.org/#map=15/56.3973/-5.5410

    #20175
    ChristianK
    ChristianK
    Keymaster

    Hi John,

    The reason why place labels tagged as within areas/ways/multypolys are not shown on the map is that “places” are only included as NODES in the tagmapping. So only dedicated nodes “place=island” is shown on the map.

    For me its perfect easy to handle the islands in the same way as other poly-labels = place labels in the middle of the island and add a bboxweight tag so that the labels of the bigger islands are shown at low zoom rates , labels from smaller islands at (eg) level 15.

    However, there will be duplicate labels with islands where a single node + a place as tag within MP.
    See on the shetlands: Noss, Mousa, St.Ninians, …
    It would be possible to remove the single nodes in tagtransform prior to making poly_labels so only place=island drived from MPs are shown on map.

    Themes would have to be modified to render island labels according to size of the polygon (bboxweight)

    @John,@Tobias – what your opinion on this.

    Best regards
    Christian

    1 user thanked author for this post.
    #20177
    JohnPercy
    JohnPercy
    Participant

    That seems a good idea to me.
    PS The forum seems to have a mind of its own at present. I posted “seems” above and it showed as “means”. I’ve corrected that but it now changes my British quotes to German ones.

    #20179
    Tobias
    Tobias
    Moderator

    Fine for me. I’m not sure if bboxweight is really needed, this needs testing.
    Removing nodes for place=island is maybe not a good idea, as there are possibly islands that don’t have place=island on the ways.
    While you’re at it, place=islet and place=archipelago should have the same treatment then. Other places hopefully still have the node as main tag, although it seems that ways/MP are getting more common.

    1 user thanked author for this post.
    #20183
    ChristianK
    ChristianK
    Keymaster

    The forum seems to have a mind of its own at present

    Its WordPress…

    https://en.wikipedia.org/wiki/The_Sorcerer%27s_Apprentice

    ;-)

    #20188
    ChristianK
    ChristianK
    Keymaster

    place=islet and place=archipelago

    For shure, eg. shetland islands are combined in one MP tagged as place=archipelago.
    I will prepare UK_Scotland and GB Map for testing.

    #20190
    ChristianK
    ChristianK
    Keymaster

    Here are the csv’s of all poly_labels with sizes.
    You will notice that (small) St.Kilda is tagged as archipelago and not as an island.

    EQ keys for sizes (same as bevore):

    bBoxWeight tiny 1,2,3,4,5,6,7,8,9
    bBoxWeight xsmall 10,11,12,13
    bBoxWeight small 14,15,16,17,18,19,20
    bBoxWeight mid 21,22,23,24
    bBoxWeight large 25,26,27,28
    bBoxWeight xlarge 29,30,31,32
    bBoxWeight xxlarge 33,34,35,36,37,38,39,40
    bBoxWeight xxxlarge 41,42,43,44,45,46,47,48,49,50,51,52,53,55

    @John: The IDs in the csv are internal IDs of the poly_labels and don’t match any ID of OSM

    zoom_appear: archipelago=6, islet=12, island=10

    Maps will follow.soon

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    #20203
    ChristianK
    ChristianK
    Keymaster
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    1 user thanked author for this post.
    #20213
    JohnPercy
    JohnPercy
    Participant
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    #20215
    Tobias
    Tobias
    Moderator

    Thanks Christian, works well as always.

    #20225
    ChristianK
    ChristianK
    Keymaster

    I’m looking forwrd to see new place=archipelago in themes = to see “Shetland Islands” in maps
    :-) :-)

    #20236
    JohnPercy
    JohnPercy
    Participant

    Screenshot_2017-09-22-15-17-16
    Screenshot_2017-09-22-15-19-18

    1 user thanked author for this post.
    #20263
    JohnPercy
    JohnPercy
    Participant
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    1 user thanked author for this post.
    #20318
    JohnPercy
    JohnPercy
    Participant

    Will this be incorporated in the next release of maps?

    #20321
    ChristianK
    ChristianK
    Keymaster

    Hi John,

    Will this be incorporated in the next release of maps?

    Yes, of course!
    Its a real improvement for the maps – thanks for this great idea!

    Best regards
    Christian

    1 user thanked author for this post.
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