Re: [OpenLayers-Dev] new Strategy.OptionsByZoom

2009-01-19 Thread Tim Schaub 
Hey-

Alexandre Dube wrote:
 Hi devs,
 
   http://trac.openlayers.org/ticket/1905 is an unassigned ticket implementing 
 a new feature : Strategy.OptionsByZoom
 
   See live examples of use :
 (working) http://dev4.mapgears.com/bdga/options-by-zoom-bdga.html 
 (missing different data sources) 
 http://dev.openlayers.org/sandbox/adube/openlayers/examples/options-by-zoom.html
 
   Comments are welcomed,

Not sure I get it - but I may have missed the back story.

Looks like you want to display a different layer (featureType) depending 
on the scale.

The current solutions are to
1) use multiple layers on the client with scale constraints, or
2) configure your server to use different data sources depending on scale.

Can you describe what is wrong with either of the solutions above?  The 
first one is particularly easy.

Tim

 
 Regards,
 


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Tim Schaub
OpenGeo - http://opengeo.org
Expert service straight from the developers.
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Re: [OpenLayers-Dev] new Strategy.OptionsByZoom

2009-01-16 Thread Sebastian Benthall 
Would it work to have OptionByZoom be a subclass of the BBOX strategy?

On Fri, Jan 16, 2009 at 1:58 PM, Alexandre Dube ad...@mapgears.com wrote:

 Hi Ivan,

  That's what I had in mind in the beginning, but others like Eric
 Lemoine convinced me not doing so.  The purpose of the BBOX strategy is
 to toggle the protocol.read when necessary and the purpose of
 OptionsByZoom is only to change the layer's protocol and format options
 before doing anything else.  This is a different behavior than the BBOX
 strategy.  Also, this strategy could be used with other ( not yet
 implemented ) strategies.

  I agree with the fact that it's wrong to have a strategy dependent of
 an other.  Also, it won't work if you declare it after BBOX because it
 won't trigger its options changing events before.

  What do you think ?

 Alexandre

 Ivan Grcic wrote:
  Hi,
 
  tnx Alex, very usefull option!!
 
  I think something like should be inside the BBOX strategy..and not
  separate strategy that is dependent on it.
 
  Greetings,
  Ivan
 
  On Thu, Jan 15, 2009 at 4:44 PM, Alexandre Dube ad...@mapgears.com
 wrote:
 
  Hi devs,
 
   http://trac.openlayers.org/ticket/1905 is an unassigned ticket
 implementing a new feature : Strategy.OptionsByZoom
 
   See live examples of use :
 (working) http://dev4.mapgears.com/bdga/options-by-zoom-bdga.html
 (missing different data sources)
 http://dev.openlayers.org/sandbox/adube/openlayers/examples/options-by-zoom.html
 
   Comments are welcomed,
 
  Regards,
 
  --
  Alexandre Dubé
  Mapgears
  www.mapgears.com
 
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 --
 Alexandre Dubé
 Mapgears
 www.mapgears.com

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Sebastian Benthall
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[OpenLayers-Dev] new Strategy.OptionsByZoom

2009-01-15 Thread Alexandre Dube 
Hi devs,

  http://trac.openlayers.org/ticket/1905 is an unassigned ticket implementing a 
new feature : Strategy.OptionsByZoom

  See live examples of use :
(working) http://dev4.mapgears.com/bdga/options-by-zoom-bdga.html 
(missing different data sources) 
http://dev.openlayers.org/sandbox/adube/openlayers/examples/options-by-zoom.html

  Comments are welcomed,

Regards,

-- 
Alexandre Dubé
Mapgears
www.mapgears.com

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