[OpenLayers-Users] Mercator projections in OpenLayers

[dlowther@coordinatesolutions.com]

Well, maybe it isn’t in the scope of OpenLayers - yet... But wouldn't it be
cool?

I've seen some rumblings on the Mapserver list about a port of cs2cs to
JavaScript - it doesn't include anything near the full projection list of
Proj4 and doesn’t reproject images - only points, but it's a start.

David Lowther
 
 

-----Original Message-----
From: users-bounces at openlayers.org [mailto:users-bounces at openlayers.org] On
Behalf Of Arnd Wippermann
Sent: Thursday, August 10, 2006 12:25 PM
To: users at openlayers.org
Subject: Re: [OpenLayers-Users] Mercator projections in OpenLayers

 Hello,

I dont understand the question. I thought, Openlayers is only an environment
to generate a request to get tiles from some data provider. Of course in the
projection the data provider supports. A reprojection is not in the scope of
openlayers. I dont understand, how it will possible to reproject a map with
client javascript.

Mit freundlichen Grüssen

Arnd Wippermann
http://gis.ibbeck.de/pinguinale/




-----Ursprüngliche Nachricht-----
Von: users-bounces at openlayers.org [mailto:users-bounces at openlayers.org] Im
Auftrag von Christopher Schmidt
Gesendet: Mittwoch, 9. August 2006 17:01
An: Nick Whitelegg
Cc: users at openlayers.org
Betreff: Re: [OpenLayers-Users] Mercator projections in OpenLayers

On Wed, Aug 09, 2006 at 03:34:24PM +0100, Nick Whitelegg wrote:
> Are there any plans to be able to set your desired projection in
OpenLayers? 
> My question relates to the OpenStreetMap rednerer (Freemap) at 
> http://nick.dev.openstreetmap.org/openlayers/ - as it stands, 
> openlayers grabs the tiles in non-Mercator (WGS84?) projection. Are 
> there plans to allow a developer to tell OpenLayers to fetch the tiles 
> in Mercator instead, similar to how the maps.civicactions.net tile 
> engine does it? Or, do users have to change their map renderer to 
> accept a bounding box of Mercator-projected, rather than standard
latitudes and longitudes?

The maps.civicactions tile action does not support this action: the tile.js
that OpenStreetMap uses (and has become the most well maintained version of
tile.js) does support this, but does not support unprojected data.

There are no plans to create a layer which supports non-linear changes of
geographic bounds. 

It should be possible to do this in a layer subclass, and we welcome all
patches for OpenLayers.  

--
Christopher Schmidt
Web Developer
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