2012/7/5 Frederik Ramm <[email protected]>: > I'd be interested in hearing from users of high-resolution displays if these > big tiles actually make a difference (except being slower to load...).
actually it doesn't make any difference on an iPhone4 (960x640px), I guess at least with this particular OL settings they are displayed at 50% like on your desktop. Btw.: the tiles are NOT identical also apart from the resolution, look e.g. at Fürth: on the normal tiles there is Erlangen above it, while on the hires tiles it isn't. On the other hand it wouldn't even be desirable (IMHO) to have the exact same tile at a higher resolution. To make best benefit from more pixels on the display it would be ideal to have a dedicated style to be able to get more details on the "same" zoom level. Something in between the detail level of the normal style (currently too small) and the next zoom level would be nice (so you wouldn't only get a crisper view but also slightly more detail). Another thing is that on mobile devices traffic and loading speed are often an issue, and upscaled images (standard tiles at 200%) are generally "sufficient" for most users I guess, with the benefit of fewer data to be transfered (and cached!). Especially when it comes to offline tiles of bigger areas the increase in memory consumption of those hires tiles is significant (around 3 times on a rough estimate with your tiles). To overcome these issues rendering on the device could be a solution (not sure what this means in terms of increased battery consumption), or maybe a hybrid approach (hillshading and contours / area fills prerendered, overlayed with vector roads and pois). This would even lead to a native stepless zooming experience (like a WMS), and the vectors could maybe be used for other things as well (routing (?), feature search and highlighting). cheers, Martin _______________________________________________ dev mailing list [email protected] http://lists.openstreetmap.org/listinfo/dev
