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I think the idea is that distributing tile data is pretty expensive? Especially for embedded web map views.
by FeepingCreature 5y ago
I think the idea is that distributing tile data is pretty expensive? Especially for embedded web map views.
- georgyo 5y agopre-rendered tiles is expensive, vector data less so. The entire OSM working data set for NA is ~12GB. NY State is ~500MB. Most countries and states are under 100MB. Daily deltas are usually well under 1MB. Tile servers are great for web apps, as you can pre-compute all the rendering and then cache the tiles. But there is no need to store terabytes of image data in an offline mobile app.
- kiwidrew 5y agoI'm very happy with OsmAnd+ on Android. I'm not sure which server(s) are being used by the app when it downloads the map data, but the transfer rate from the server leaves much to be desired. It's probably a significant burden to host the entire collection, both in terms of storage space and in available bandwidth. So I can see how hosting the data as a series of torrents would help make this more sustainable. But it's a bit silly to implement an entire torrent stack inside a web browser just to display a few static image tiles...