[mapserver-users] Rendering artefacts when serving raster via WMS * SOLVED * Sort of

[John Westwood]

Hi

After testing with shp2img I have just realised what is causing this
problem. It is all my fault :) Some of the map sheets overlap and I am
using the OFFSITE command with 255 255 255 to make white transparent,
hence some of the sheet behind is showing through.

Unfortunately, I need the OFFSITE command to make white transparent so
that the white 'border' around the sheet does not obscure the map sheet
it is overlapping.

I'm not sure what would be the easiest / best way around this. Does
anybody have any ideas? Thanks.

Regards,

John W.

Great Britain Historical GIS Project



>>> Frank Warmerdam  15/06/11 4:05 PM >>>
On 11-06-10 12:25 PM, John Westwood wrote:
> Does anybody have any ideas what the problem could be? I know it is
something
> to do with the fact that I boosted the images and MapServer doesn't
like them,
> but I would like to fix it. Suggestions greatly appreciated.

John,

I'm afraid I don't have much to offer.  I just wanted you to know that
someone had looked at your post and had no bright ideas about why it is
happening.  If this is quite important to you, you could file a ticket
on the issue, reducing it to a simple map file with one input GeoTIFF
and a request (ideally with shp2img) that produces the artifacted
output.
Then I could dig into this from my end.

If you do that, you can directly assign the MapServer ticket to
"warmerdam".

Best regards,
-- 
---------------------------------------+--------------------------------------
I set the clouds in motion - turn up   | Frank Warmerdam,
warmerdam at pobox.com
light and sound - activate the windows | http://pobox.com/~warmerdam
and watch the world go round - Rush    | Geospatial Programmer for Rent


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