Not to get into the coding as I have no idea how it is handled, but better to not offer a 404 page, but to keep the min/max zoom tile as the reply in this case. Ie if asking for zoom 20+ return with zoom 19 instead. More of a redirect instead of 404 if zoom is out of bounds.
One possibility to slightly abuse the zoom limits... tms[19,19]:http://... probably fine for lots of stuff as you would probably end up at that level anyhow. Could we get just 2 zoom levels? say 16 and 19? Dale On Sun, Sep 23, 2012 at 2:21 PM, Ian Dees <ian.d...@gmail.com> wrote: > The "root cause" if you will, is that TileStache doesn't support 404ing > instead of grey tiles when a request falls out of the specified bounds. If > someone wants to code that up and submit a pull request, I would much > rather use that. > > > On Sun, Sep 23, 2012 at 1:18 PM, Alan Millar <grunthos...@yahoo.com>wrote: > >> I also found there is a minimum zoom also. Put it in the url as min,max >> like >> >> tms[16,19]:http://... >> >> Fixes the grey tiles when I zoom back out. >> >> - Alan >> >> >> On Sep 23, 2012, at 12:54 AM, Toby Murray <toby.mur...@gmail.com> wrote: >> >> I knew about the max zoom setting but for some reason never thought about >> applying it to the TIGER tiles to fix the grey.... >> >> Toby >> On Sep 21, 2012 1:23 PM, "Alan Millar" <grunthos...@yahoo.com> wrote: >> >>> Maybe everyone else knows this, but I just discovered it myself so I >>> thought I would share it. >>> >>> I've been using Remap-a-tron to fix up US roads. I use both the Bing >>> imagery and the TIGER 2012 tiles overlaid, and it makes it really >>> useful. >>> >>> However, I've been frustrated that I can pretty far in with the Bing >>> images, but if I go too far, the Tiger (normally transparent) tiles turn >>> grey and obscure the Bing images. I've been continually turning off and >>> back on the Tiger layer, which is a bit annoying after a while. >>> >>> JOSM has an easy limit in the Preferences for the maximum zoom, but it >>> affects everything. I set it to 19, and then I did not get the grey >>> boxes from Tiger, but did not get the higher detailed photos from Bing >>> either. >>> >>> As it turns out, JOSM does have a max-zoom per tile server feature; it >>> just is not obvious or clearly documented that I could find. >>> >>> You can enter it as part of the TMS url like this: >>> >>> tms[19]:http://{switch:a,b,c}. >>> tile.openstreetmap.us/tiger2012_roads/{zoom}/{x}/{y}.png<http://tile.openstreetmap.us/tiger2012_roads/%7Bzoom%7D/%7Bx%7D/%7By%7D.png> >>> >>> The number 19, right up front, says that the maximum zoom to use for >>> this layer is 19. This solved the whole thing for me. >>> >>> I also found that if you go into Josm preferences in expert mode, and >>> dig and dig and dig into the imagery providers entries, this is labeled >>> as max-zoom. Too bad it isn't easier to find. >>> >>> Anyways, hope this helps others too. >>> >>> - Alan >>> >>> >>> >>> _______________________________________________ >>> Talk-us mailing list >>> Talk-us@openstreetmap.org >>> http://lists.openstreetmap.org/listinfo/talk-us >>> >> _______________________________________________ >> Talk-us mailing list >> Talk-us@openstreetmap.org >> http://lists.openstreetmap.org/listinfo/talk-us >> >> >> _______________________________________________ >> Talk-us mailing list >> Talk-us@openstreetmap.org >> http://lists.openstreetmap.org/listinfo/talk-us >> >> > > _______________________________________________ > Talk-us mailing list > Talk-us@openstreetmap.org > http://lists.openstreetmap.org/listinfo/talk-us > > -- Dale Puch
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