[OpenLayers-Users] overviewmap problem

[Tim Schaub]

Hey-

Xiaodong Song wrote:
> Hi everybody,
> 
> I have a problem with overviewmap in OpenLayers.
> 
> I use GeoServer + GeoWebCache + OpenLayers. In some high resolution 
> levels, for example level X,  when I zoom in from level X-1 to X, the 
> overviewmap rectangle will disappear (the mini-map in overviewmap window 
> is OK), but when I zoom out from level X+1 to X, the overviewmap 
> rectangle will appear (but still missing at some resolutions, not all).
> 

It would be useful to be able to see your application to help figure out 
what is going on.

It sounds like a stylesheet problem.  Can you examine the overview map 
in firebug and confirm that the olControlOverviewMapRectReplacement css 
class is getting set on the rectangle.  If your stylesheet is loaded 
(and has a declaration for that class), the overview_replacement.gif 
will get used (assuming it exists).

Tim

> But if removing GeoWebCache, everything is OK, so it's certain the 
> problem is with GeoWebCache. In GeoWebCache, I set zoomStart 0 and 
> zoomStop 9. Whether this problem is introduced by improper configuration 
> of resolution in GeoWebCache?
> 
> Thank you!
> 
> -- 
> Xiaodong Song
> 
> 
> ------------------------------------------------------------------------
> 
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-- 
Tim Schaub
OpenGeo - http://opengeo.org
Expert service straight from the developers.