[OpenLayers-Users] maxresolution and minresolution does not work as expected

Norbert Renner Norbert.Renner at gmx.de
Tue Jun 18 00:59:33 PDT 2013


> And during my test, I found that it seems that the min/max resolution
> does not work as expected. For example:
>
> layera(minzoom=0,maxzoom=3) request data from `a.tile`

minZoomLevel/maxZoomLevel are probably only working with 3rd Party 
Layers [1]?

What should work is one of the following combinations of Layer options 
[2][3]:

a) zoomOffset + resolutions
b) resolutions + serverResolutions (resolutions as subset)
c) zoomOffset + maxResolution + numZoomLevels
    e.g. with maxResolution = 156543.03390625 / Math.pow(2, zoomOffset)

Norbert

[1] http://trac.osgeo.org/openlayers/wiki/SettingZoomLevels
[2] 
http://dev.openlayers.org/releases/OpenLayers-2.13/doc/apidocs/files/OpenLayers/Layer/WMTS-js.html#OpenLayers.Layer.WMTS.zoomOffset
[3] 
http://help.openstreetmap.org/questions/13666/openlayers-limit-the-number-of-zoom-levels/13713


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