Coastlines cut off

[John Thorn]

I have created a map of the Shetland Islands using the OsmandMapCreator and data in OSM format built from OS Opendata but the land is being cutoff into square chunks - that vary as I zoom. Is there a way to control this behaviour.

The map is at https://www.sendspace.com/file/lalbux

[Bart Eisenberg]

(I don't have an answer. But if you're the John Thorn behind MAPC2MAPC, thanks for your good work.)  

[John Thorn]

Hi Bart,

Yes, I am the same John Thorn. Thank you for your comments.

I transform various data sources into OSM format. It compiles OK with Mapsforge but not, it seems, for OSMAND

Best wishes,

John

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[Bart Eisenberg]

John: way back on a Garmin forum, you were the first person I'd heard to suggest that smartphones were going to overtake dedicated units in functionality.  Good call. ;-)  And you helped me with this 2017 video showing how MAPCTOMAPC can create raster layers for OsmAnd.  https://youtu.be/Y_fekLfcUOc  It still gets steady viewership. 

Re: your question. There are some technically knowledgeable people here on the forum and so hopefully, someone will be able to address it.  

Best,

Bart

On Thursday, May 7, 2020 at 12:21:40 AM UTC-7, John Thorn wrote:

Hi Bart,

Yes, I am the same John Thorn. Thank you for your comments.

I transform various data sources into OSM format. It compiles OK with Mapsforge but not, it seems, for OSMAND

Best wishes,

John

On Thu, 7 May 2020 at 05:39, Bart Eisenberg <bartei...@gmail.com> wrote:

(I don't have an answer. But if you're the John Thorn behind MAPC2MAPC, thanks for your good work.)  

On Tuesday, May 5, 2020 at 1:35:30 AM UTC-7, John Thorn wrote:

I have created a map of the Shetland Islands using the OsmandMapCreator and data in OSM format built from OS Opendata but the land is being cutoff into square chunks - that vary as I zoom. Is there a way to control this behaviour.

The map is at https://www.sendspace.com/file/lalbux

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[Harry van der Wolf]

Hi,

The data from OsmAnd is directly built from the entire planet.o5m file. They do that by downloading every month the updates for that month and merge it with their local data (many Gigabytes as you can imagine).

From this bulk data the continents are extracted (Europe, Asia, North-America, etc). by means of polygons, and from the continents the countries are extracted by their polygon.

This is also how Scotland is created. If I look at the Shetland Islands from the 1 May OsmAnd map, it is correct. And that one is also generated by OsmandMapCreator.

I guess you somewhere missed a multi-polygon or relation in the polygon/area that you used for the Shetland Islands. We see that sometimes happen in other areas as well with lakes, coastlines, rivers, etc. (also in other OSM based applications).

Harry

Op di 5 mei 2020 om 10:35 schreef John Thorn <johnr...@gmail.com>:

I have created a map of the Shetland Islands using the OsmandMapCreator and data in OSM format built from OS Opendata but the land is being cutoff into square chunks - that vary as I zoom. Is there a way to control this behaviour.

The map is at https://www.sendspace.com/file/lalbux

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