When Web Map Tiles are constructed with, for example, wind arrows, the wind arrows may cross the boundary of the tile. Users and clients of the WMTS expect seamless, pixel accurate, joining of tiles. The 'overhanging' wind arrows may be truncated giving a misleading and messy map.

Even if a set of tiles are 'tuned' so that wind arrows do not 'overhang', the problem can re-occur when the map is zoomed, or the wind direction changes, or a different resolution of wind data is displayed.

This problem can also occur with other symbols representing features, or coverages, 'overhanging' the tile edges.

It is not clear how WMS, WMTS and SLD/SE should be changed to address this problem.

There are, of course, also performance issues with WMTS.

A more comprehensive description of this problem will be written with some possible options for progress.

-- ChrisLittle - 20 Jan 2010
Topic revision: r1 - 20 Jan 2010, ChrisLittle
This site is powered by FoswikiThe information you supply is used for OGC purposes only. We will never pass your contact details to any third party without your prior consent.
If you enter content here you are agreeing to the OGC privacy policy.

Copyright &© by the contributing authors. All material on this collaboration platform is the property of the contributing authors.
Ideas, requests, problems regarding OGC Public Wiki? Send feedback