Opened 11 years ago

Closed 7 years ago

#2341 closed enhancement (wontfix)

When using custom tiles, magnify tiles from lower zoom levels if higher zoom level version are not available.

Reported by: tom_verbeure@… Owned by: richard@…
Priority: major Milestone:
Component: potlatch (flash editor) Version:
Keywords: Cc:


When using USGS topo maps as background for tracing, there's not much use in creating tiles beyond zoom level 15, maybe 16. This is a bit of a problem, because at level 15, tracing is inaccurate and the covered area is pretty large, so downloading the OSM data can take quite a bit of time.

The current solution is to create tiles at level 17, but this results in a huge blow up of disk space.

E.g. a single 13MB USGS .tif file results in 122MB of disk space at zoom level 17... Also, generating the tiles takes a lot more time.

It would be nice if there were some option in Potlatch to have it check out if lower resolution versions of the same tile were available.

Change History (1)

comment:1 Changed 7 years ago by iandees

Resolution: wontfix
Status: newclosed

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