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How are personal maps merged?

Ingo Rau shared this question 9 years ago
Answered

I recently found out that when you put several personal maps (downloaded by Locus) into the same folder, they are obviously automatically merged. That is a great feature, but I would like to know if there's a rule which tile is chosen when there are several. I mean, when you have overlapping personal maps, how does Locus decide which tile to display?

Best Answer
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Hello,


Locus search in all maps in directory in random order. There is not strict rule. So if you wants to use this feature, best is to have maps without overlap or maps from same source where do not mind from which map Locus load required tile.

Replies (3)

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1

Hello,


Locus search in all maps in directory in random order. There is not strict rule. So if you wants to use this feature, best is to have maps without overlap or maps from same source where do not mind from which map Locus load required tile.

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Of course overlap should be kept to a minimum, but you can't completely avoid it, and I was just wondering how it works.

Thanx for the quick reply (as always)!

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You are welcome.


Till now, there was no serious reason to make any precise algorithm for this, so that's why choose tile is still "random".


Anyway small hint ... Locus loads all map files in directory and first map that will contain required map tile, will became "master". And till this map contain required tiles, Locus use it. Once new tile is required and it is not in this map, Locus search in other map files if any contain any required tile. And so on ...

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Hi,


Unfortunately I receive an unspecific Error-message trying to merge severel maps in your way:


- All mapfiles loaded with LocusPro from same source (OpenSeaMap)


- All maps with both files 123.sqlitedb + 123.sqlitedb-journal in same folder


-/sdcard/Locus/maps/MergedMaps/OSeaM Baltic.sqlitedb


- Error after selecting all maps and import via "externe hinzufügen -> neue Karten hinzufügen "


- Error "Problem mit 123.sqlitedb"


- Using SamsungS6 und LocusPro

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Good day Daniel,


there should be need no import. All maps should be visible in Menu > Maps > tab Offline and here in section maps > Merged maps. So please check it.

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