[OpenLayers-Users] Min Zoom Level

[Warren Vick]

Hi Matthias,

Thanks for the prompt feedback. How would changing the scale of each
zoom level limit the number of levels available to the user? In my case,
I have 11 zoom levels but want to start at level 6. So, my zoom control
would only represents the levels between 6 and 11.

Regards,
Warren

-----Original Message-----
From: Matthias Woltering [mailto:woltering at gmail.com] 
Sent: 12 February 2009 13:00
To: Warren Vick
Cc: users at openlayers.org
Subject: Re: [OpenLayers-Users] Min Zoom Level

Hi Warren,

you can set set the scales manually like this:

var options = {
  maxExtent: new OpenLayers.Bounds(1430000,4400000,1760000,4660000)
  ,maxResolution: "auto"
  ,scales: [1000000,500000,250000,100000,50000,25000,10000]
  ,units: 'm'
  ,projection: 'EPSG:31466'
  ,controls: []
  //,zoom: 1
  //,numZoomLevels: 8
};
map = new OpenLayers.Map('map', options);

If you don't want to set scales use numZoomLevels.

Regards,
Matthias


Warren Vick schrieb:
> How can I set a minimum zoom level for a map? Focussing on a single
> country, I know how to limit the extent but can't figure out how to
stop
> someone zooming out and seeing TMS tiles that have not been rendered.
> 
> Regards,
> Warren
> 
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