Hi,

I would say that if it is not possible at the moment to make a logical WMS 
layer that automatically swithes between several external overviews and the 
original imagery through tileindex according to scale settings, then it would 
be very useful to have.  However, it feels so obvious demand that I would be a 
bit surprised if there is not such an option. Anyway, if it is missing then I 
will give +1 for feature request.

There seems to be an option called wms_layer_group in the layer metadata 
section of mapfile, but I must admid  that I do not understand what it stands 
for.

-Jukka Rahkonen-



> -----Alkuperäinen viesti-----
> Lähettäjä: [EMAIL PROTECTED] 
> [mailto:[EMAIL PROTECTED] Puolesta 
> Eichner, Andreas - SID-NLK
> Lähetetty: 6. maaliskuuta 2008 9:26
> Vastaanottaja: [email protected]
> Aihe: [mapserver-users] Re: Hiding overviews
> 
> 
> Hello Jacob,
> 
> thanks for your try but this didn't help, sorry. IMHO the 
> problem is that there seems to be no way to declare multiple, 
> scale dependend data sources for one layer (in a WMS sense). 
> Since the only reason of using of overviews for me is the 
> (nearly) scale-independent performance. But optimization is 
> _really_ a private thing of the service. It is not of the 
> client's interest that MapServer internally organizes 
> overviews as multiple layers... 
> 
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