Hello Dane,

Thank you for leading this search.

> If you take away the map buffer_size your image should render  
> correctly. Can you confirm this? 

Yes this solves the bug ! Great !

>I cannot imagine any reason you need  
>to use a buffer_size >0 for rendering raster images - can you remove  
>this parameter or let me know why you are using it? 

I had hard-coded it long ago and forgot to move it to the XML since then.
I will of course change this ugly way to do.

By the way, a buffer could be used in case you render tiles from a raster
background and add some more shape features above it like point of interest.
In that case, to avoid cut labels you might need to set a buffer.

> So, your options to workaround this issue, for now, are to set the  
> buffer_size = 0 or use the raster input plugin.

Yes, I think that I will either use the 0.6.1 gad plugin or make a "smart"
system using either raster or gdal plugin depending on buffer_size value.

Thank you again for this big help, I guess it has been tricky to find the
cause of the bug.

Nicolas.
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