[OpenLayers-Users] Displaying the whole world centered on Pacific

[Paul Spencer]

singleTile doesn't do anything special to support the wrapDateLine  
property, the underlying mapping technology just doesn't know how to  
draw a map that spans the date line.

A feature enhancement of the singleTile mode when the wrapDateLine  
property is set might be to actually have more than one tile where  
each tile is lined up with the date line.  So there would be one  
'singleTile' from the left edge of the extent to the date line, one  
from first date line to the next (and so on) and a final one from the  
date line to the right edge of the extent.

Unless you are willing to work on this, though, you may do better to  
set up a tiled layer using WMS rather than a singleTile layer.

Cheers

Paul

On 4-Jul-08, at 10:21 AM, Pierre-Benoit Besse wrote:

> Thank you Paul, it works.
>
> But I have an other problem now. I have a point shapefile containing  
> population density. I display each point as a square to cover the  
> entire map without holes.
> To do it I had to set the singleTile property of the layer to "true"  
> or I had white lines on tiles borders (the squares are drawn only on  
> the tile containing the point).
>
> But it doesn't work with a wrapDateLine to "true" too. It cuts the  
> map at long 180 (-180) and switches to one 'side' or the other, but  
> it never displays both side at once.
>
> Is there anything I can do about it ?
>
> P.S : I don't know if I made myself clear, if not please ask for  
> details.
>
> 2008/7/3 Paul Spencer <pagameba at gmail.com>:
> Hi Faldor,
>
> you do need to use -180 -> 180, but I think you can get this to work  
> using the wrapDateLine propery, see the wrapDateLine.html example  
> and then set the center of your map to a geographic location in the  
> pacific.
>
> Cheers
>
> PAul
>
>
>
> On 3-Jul-08, at 11:30 AM, Faldor wrote:
>
>
> Hi all,
>
> Is there a way to display a map of the whole world not centered on  
> Europe ?
> Until today I defined the "maxExtent" property of my "map" object with
> (-180, -90, 180, 90).
> I wish to display it centered on Pacific but I tried (0,..,360,..)
> (0,..,0,..) etc... and it didn't work. For exemple with  
> (0,..,360,..) it
> displays from 0 to 180 but cuts the rest.
>
> How can I solve this ?
> I display data from a MapServer server, I tried to edit the EXTENT  
> property
> in the mapserver's mapfile but it changed nothing.
>
> Best Regards,
>
> Faldor
> -- 
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