[mapserver-users] Rasters with transparency and resampling

[Christy Nieman]

Bump!

The problem is that I often need to draw raster layers using tile 
indexes, and in 6.2 I get artifacts at each tile boundary.  Rasters that 
have transparency at coast lines for water also have the same problem.

Is there a way to avoid this and still use resampling?

Thanks,
Christy

On 06/26/2013 08:39 AM, Christy Nieman wrote:
> Hi all,
>
> I've noticed that if I draw a TIFF that has some transparent pixels 
> set either by using OFFSITE or alpha values in the TIFF palette, there 
> are artifacts that appear around the transparent areas with MapServer 
> 6.2, but not with 5.6, when I add the resample processing option to 
> the layer.  I assume there is something that has changed in MapServer 
> that causes this to happen and I was wondering if someone could 
> explain it to me.
>
> Thanks,
> Christy