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  • #5233
    JohnPercy
    JohnPercy
    Teilnehmer

    Using the latest Great Britain map on Locus with any theme I find a square of sea inland at N 51° 40.591′ W 03° 54.290′ at zooms 13-15. The screenshot shows the square in bright colour, as I tweaked the theme I was using to identify the source of the problem.
    Screenshot_2015-07-02-10-18-01

    #5235
    ChristianK
    ChristianK
    Keymaster

    Hi John,

    Thats one of the rare occasions where tiles are rendered wrong in Locus while using the latest Version of the mapsforge renderer.
    The map istself is OK – Displayed in Atlas

    Screenshot-2015-07-02-13.31.01

    Best regards,
    Christian

    #5237
    JohnPercy
    JohnPercy
    Teilnehmer

    I too had found that the map displayed OK in Atlas but came to the conclusion that did not necessarily mean that the map was „OK“. If it was really „OK“ it would display OK in Atlas, Locus and all others map apps! I’ll ask the Locus folk and see..

    #5238
    Emux
    Emux
    Teilnehmer

    It’s worth mentioning that not all apps using Mapsforge, use it necessarily ‚as is‘.

    Many modify it or use just its map reader component and their own renderer.
    So many things could happen in all these steps.

    Cruiser / Atlas include latest unmodified Mapsforge.

    Emux
    CruiserAtlas

    #5252
    ChristianK
    ChristianK
    Keymaster

    I too had found that the map displayed OK in Atlas but came to the conclusion that did not necessarily mean that the map was “OK”. If it was really “OK” it would display OK in Atlas, Locus and all others map apps! I’ll ask the Locus folk and see..

    Hi John,

    If I would use the old MapWriter the problem with a very few tiles would not occur.
    In the other hand it would be impossible to render the monster Water-MultiPolygons in the North of Canada, the woods in Japan. It would take ages even to render the mid of Sweden, Alaska, Parts of Russia aso…

    So I had to make a decission.
    Better a very few tiles redering wrong than a lot of countrys not rendering or with missing water and wood or with redicoulus render times.

    Best regards, Christian

    #5253
    Emux
    Emux
    Teilnehmer

    Christian do you mean this has to do also with the map-writer?

    Emux
    CruiserAtlas

    #5254
    ChristianK
    ChristianK
    Keymaster

    Hi Emux,

    Yes its an issue with the mapWriter too – thats the reason I modified the rendering process to allow different MapWriters for different Maps.
    The MapWriter of the first MapsForge3 Version is slow and cant render big MPs.
    The latest Versions of The MapWriter is rendering MUCH faster, allows big MPs, needs much more java heap and sometimes (not worth to mention) it produces strange results. I cant see a clear picture behind this behaviour so I use the Writer Version that is fine for the Map in question.
    And – simple to say the TagMapping of the OAM is very close at the limits whats possible so ist hard to say whats going wrong in general.

    Over all: nothing to worry about in the end.

    VG
    Christian

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