[mapguide-users] Zac's tile seeder with British National Grid

[Zac Spitzer]

you need to change the settings for the extents, the tempScales and under params
both the mapdefinition, basemaplayergroupname

are there any javascript errors?

On Wed, Oct 22, 2008 at 3:31 AM, gingerbbm <stuart.jones at jacobs.com> wrote:
>
> Dear all
>
> I got Zac's tile seeder working with Sheboygan using both of the following:
>
> http://trac.osgeo.org/mapguide/attachment/wiki/CodeSamples/Tiles/TileCacheSeeding/mapguide_tile_seeder.html
> http://trac.osgeo.org/mapguide/attachment/wiki/CodeSamples/Tiles/TileCacheSeeding/mapguide_tile_seeder.html
>
> http://trac.osgeo.org/mapguide/attachment/wiki/CodeSamples/JavaScript/OpenlayersExample/sheboygan.php
> http://trac.osgeo.org/mapguide/attachment/wiki/CodeSamples/JavaScript/OpenlayersExample/sheboygan.php
>
> But I can't convert either to work with my tiled map using British National
> Grid coordinates.
>
> I've changed my Bounds like this:
>
>    var extent = new OpenLayers.Bounds(302000,370000,375000,410000);
>
> I've tweaked the mapOptions thus:
>
>    var mapOptions = {
>        ...
>        units: 'm',
>        projection: 'EPSG:27700',
>        ...
>    };
>
> And I added these lines (as stated
> http://zacster.blogspot.com/2008/08/tiny-little-openlayers-mapguide-fusion.html
> in Zac's blog ):
>
>    var metersPerUnit = 111319.4908;  //value returned from mapguide
>    var inPerUnit = OpenLayers.INCHES_PER_UNIT.m * metersPerUnit;
>    OpenLayers.INCHES_PER_UNIT["dd"] = inPerUnit;
>    OpenLayers.INCHES_PER_UNIT["degrees"] = inPerUnit;
>
> I'm suspicious about the hard-coded tempScales values. As I have no previous
> experience with OpenLayers, perhaps there's something obvious I've not done.
>
> Any ideas, anyone?
>
> Thanks
> Stuart
> --
> View this message in context: http://n2.nabble.com/Zac%27s-tile-seeder-with-British-National-Grid-tp1360223p1360223.html
> Sent from the MapGuide Users mailing list archive at Nabble.com.
>
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-- 
Zac Spitzer -
http://zacster.blogspot.com (My Blog)
+61 405 847 168