[mapserver-users] Possible tile_map_edge_buffer issue

[forums]

I would also like to point out that features on the edge of the
missing tile, will display on the adjacent tile where the overlap
occurs.

Bottom right hand corner of the image I have attached shows a little
green sliver, that's from my data source.  The big yellow dot is the
previously mentioned feature I added.



On Thu, Jul 28, 2011 at 9:28 AM, forums <forums at craniumjuice.com> wrote:
> I was just about to post this EXACT same issue.  I have discovered
> something else though.  I can force a feature and git to show up where
> the other missing data is.  It shows up on tile=0+1+2  Also If I view
> the map as mode=map, it works fine, I see my YellowDot and my actual
> data from my data source.
>
> LAYER
>        NAME "YellowDot"
>        STATUS DEFAULT
>        TYPE POINT
>        FEATURE POINTS -100 20 END END
>        CLASS
>            STYLE
>                SYMBOL "circle"
>                SIZE 30
>                COLOR 255 255 0
>                OUTLINECOLOR 255 0 0
>            END
>        END
> END
>
>
>
>
> On Thu, Jul 28, 2011 at 9:18 AM, Charlie Allgrove
> <charlie.allgrove at connectionservices.com> wrote:
>> Hi
>>
>>
>>
>> I have an issue when using tile_map_edge_buffer functionality with mode=tile
>> on a Google map view which displays the whole world at zoom 0,1 or 2. It
>> probably manifests itself at higher zoom levels, but will be less obvious
>> (if at all) since I'm only rendering data over land.
>>
>>
>>
>> In my map file I have (amongst others)
>> WEB
>>
>>     METADATA
>>
>>         "tile_map_edge_buffer" "32" # 32 pixel rendering buffer
>>
>>         "http_max_age" "86400"
>>
>>     END
>>
>>   END
>>
>>
>>
>> My development code is not on a publicly available server at the moment, so
>> I can't post a link but when I am looking at a Google map at zoom levels 0,1
>> or 2, the tiles consistently cut off approx half-way across the USA (see
>> attached screenshot).
>>
>> It seems that {tile=0 1 2} does not render with the buffering enabled, since
>> the buffered area extends effectively to a negative tile reference {-1 1 2}
>> which is illegal.
>>
>>
>>
>> Is there any way around this - is it possible only to enable the buffer for
>> zooms >=3?
>>
>>
>>
>> Cheers
>>
>>
>>
>> Charlie
>>
>>
>>
>> --
>>
>> Charlie Allgrove
>>
>> Senior Developer
>>
>>
>>
>> Connection Services :: Business Mobility for a Wireless World
>>
>>
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>
>
>
> --
> A computer without Windows is like chocolate cake without mustard.
>



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A computer without Windows is like chocolate cake without mustard.
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