[OpenLayers-Users] Seams in my imagery

[Christopher Schmidt]

On Tue, Aug 12, 2008 at 11:52:31AM -0400, Matthew Atkins wrote:
> 
> On Tue, Aug 12, 2008 at 09:29:01AM -0400, Matthew Atkins wrote:
> > Hello List,
> > 
> > I have some imagery that is projected in WGS84 + UTM Zone which is
> > showing some "seams" along the grid lines when I use OpenLayers as my
> > viewer. I believe that this is a problem with the WMS provider (ESRI's
> > wmsconnector) but they have told me that they do not support 3rd party
> > viewers (OL) so I am stuck in a quandary.
> 
> 1. I would recommend trying a 'gutter' property of 10px or so, if it's
>    just tile edges causing the problem.
> 
> Brilliant! The gutter looks like it will be a great solution to this
> problem. Now, the only thing is how do I get this to work with my
> TileCache? I changed the "size" of the tile expected in the
> tilecache.cfg accordingly but I am getting an error saying "couldn't
> calculate tile index". Any thoughts?

You neglected to mention that TileCache was involved. You should drop
the gutter, and simply use metaTile=yes, metaSize=1,1, and
metaBuffer=10 to replicate a 10px buffer.

Regards,
-- 
Christopher Schmidt
MetaCarta