[OpenLayers-Users] SphericalMercator and SRS aliases epsg:900913, epsg:3857, epsg:3785, epsg:102113

[Andreas Hocevar]

On Jul 27, 2010, at 14:25 , Arnd Wippermann wrote:

> Hi,
> 
> That way you have to set the SRS in the params and the projection in the
> options. 

If you have set a projection in the map options, you don't have to set it again on the layer.

Regards,
Andreas.

> 
> I would think, it's better, the params get the projection from the map and
> if you want to overwrite the SRS use projection or projectionAlias in the
> options.
> 
> That way you have only one change not two. 
> 
> Also I think, it's better, that one could only overwrite WMS params, which
> OpenLayers couldn't set by itself like version, layers etc.
> 
> Arnd
> 
> 
> 
> 
> 
> -----Ursprüngliche Nachricht-----
> Von: Andreas Hocevar [mailto:ahocevar at opengeo.org] 
> Gesendet: Dienstag, 27. Juli 2010 09:05
> An: Arnd Wippermann
> Cc: 'Anne Blankert'; users at openlayers.org
> Betreff: Re: [OpenLayers-Users] SphericalMercator and SRS aliases
> epsg:900913, epsg:3857, epsg:3785, epsg:102113
> 
> Please have a look at http://trac.openlayers.org/ticket/2756 and provide
> feedback.
> 
> Regards,
> Andreas.
> 
> On Jul 26, 2010, at 14:13 , Arnd Wippermann wrote:
> 
>> Hi Anne,
>> 
>> I agree, something like 'projectionAlias' is better to understand than 
>> projection.
>> 
>> Arnd
>> 
>> 
>> -----Ursprüngliche Nachricht-----
>> Von: users-bounces at openlayers.org 
>> [mailto:users-bounces at openlayers.org] Im Auftrag von Anne Blankert
>> Gesendet: Montag, 26. Juli 2010 00:02
>> An: users at openlayers.org
>> Betreff: Re: [OpenLayers-Users] SphericalMercator and SRS aliases 
>> epsg:900913, epsg:3857, epsg:3785, epsg:102113
>> 
>> 
>> Hello Arnd,
>> 
>> An option named "sphericalmercatoralias" is indeed very specific to 
>> sphericalmercator.
>> Maybe, an option named "projection" is not specific enough. Users 
>> could think that such an option would somehow magically allow 
>> reprojecting the overlay projection to the map projection. Things 
>> would get mixed up, when sending bounding box coordinates using the wrong
> projection.
>> So maybe an option named "projectionalias" would be a better name than 
>> "sphericalmercatoralias" or "projection"?
>> "projectionalias" stresses the fact that the projection itself should 
>> not be different, just the code that is being used for the projection.
>> 
>> Anne
>> 
>> 
>> --
>> View this message in context:
>> http://osgeo-org.1803224.n2.nabble.com/SphericalMercator-and-SRS-alias
>> es-eps g-900913-epsg-3857-epsg-3785-epsg-102113-tp5311417p5336039.html
>> Sent from the OpenLayers Users mailing list archive at Nabble.com.
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> 
> 
> 
> --
> Andreas Hocevar
> OpenGeo - http://opengeo.org/
> Expert service straight from the developers.
> 

-- 
Andreas Hocevar
OpenGeo - http://opengeo.org/
Expert service straight from the developers.