The link that Edward referred to mentions meta tiles in GeoServer hard coded to 3x3. Does this mean that GeoServer (not using GWC) creates meta tiles for all WMS requests?

Thanks,

Michael Romero
Forward Slope Inc.


On 05/16/2012 06:08 AM, David Winslow wrote:
GeoServer takes measures to automatically buffer WMS requests to avoid these sorts of issues but they don't always work depending on your style. Sometimes adding an explicit <Size> tag even when you want to use the image's native size helps.

Additionally, if you can configure your client to include an appropriate "buffer" parameter, this will fix the problem. Just make your buffer at least half the width of the widest marker/label that you will have. (So &buffer=8 will correct for icon slicing on 16-pixel icons, etc.)

There are more custom WMS parameters listed here: http://docs.geoserver.org/latest/en/user/services/wms/vendor.html

Hope it helps.

--
David Winslow
OpenGeo - http://opengeo.org/

On Wed, May 16, 2012 at 8:43 AM, Edward Mac Gillavry <[email protected] <mailto:[email protected]>> wrote:

    Tom,

    Not something related to GeoServer, but your tiling engine. Check
    out whether you can specify an extra gutter/buffer around the
    meta-tiles that you request from GeoServer. The exact parameter
    depends on your tiling engine.

    Also check out
    http://permalink.gmane.org/gmane.comp.gis.geoserver.user/21271

    Kind regards,

    Edward

    ------------------------------------------------------------------------
    Date: Wed, 16 May 2012 13:30:05 +0100
    From: [email protected]
    <mailto:[email protected]>
    To: [email protected]
    <mailto:[email protected]>
    Subject: [Geoserver-users] Point markers that straddle tiles


    Hi all,
    When using images as point styles I have discovered that if the
    image straddles a tile it will cut off at the edge of the tile. Is
    there any way to prevent this?  The attached image shows a couple
    of examples of this in action and you can see where the edges of
    the tiles are.  The two icons at the bottom have their tops
    missing (slightly) while the two just to the right and a little
    further up are virtually cut in half!
    Incidentally, the attached image also shows that alpha
    transparency doesn't appear to work either.  Each of the images
    has a border with alpha transparency but they are rendered as black.
    We're using Geoserver 2.1.3 on Windows Server 2008 32bit.

    Tom



    
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