SQLite Forum


2 forum posts by user tkh329

01:55 Reply: Jumbled image tiles? (artifact: d033fed824 user: tkh329)

Thank you for the replies. I'll put together a small file to share.

17:07 Post: Jumbled image tiles? (artifact: 4a8ebef776 user: tkh329)


Please assume, correctly, I have zero understanding of the internal working of SQLite files.

I am struggling to understand why some apps and programs correctly display SQLites I export from raster data, while other apps and programs show the tiles in odd locations at incorrect zoom levels. Why is this?

For more detail, I use a GIS program, Global Mapper, to export raster data into SQLite files, normally PNG tiles. I normally the SQLites in OsmAnd, an open source mapping app for Android. OsmAnd displays SQLites from earlier versions of Global Mapper correctly. SQLites exported from later versions of GM do not display correctly in OsmAnd. Locus Maps for Android displays both earlier and later exports correctly.

I have the same experience with MBTiles. OpenCPN for Android does not display later version exports of MBTiles files correctly while Locus Maps does. Is it the same problem?

Thank you for your time!