[mapserver-users] mapserver produces interlaced PNGs even if I configured the map to output noninterlaced PNGs

Adrian Popa adrian_gh.popa at romtelecom.ro
Wed Oct 14 06:36:22 PDT 2009


Hello all,

My goal is to setup tilecache (which is proving to be a real pain), and 
so far I've noticed that even if I configured my map to generate 
noninterlaced PNGs (instructions here: 
http://www.mapserver.org/faq.html#why-doesn-t-pil-python-imaging-library-open-my-pngs), 
it still generates interlaced PNGs.

Here is my outputformat (the only one defined) in my map:
OUTPUTFORMAT
    NAME 'AGG'
    DRIVER AGG/PNG
    IMAGEMODE RGBA
    TRANSPARENT ON
    FORMATOPTION "INTERLACE=OFF"
END

The parameters that get sent to my mapserver instance are:
BBOX 	|2896046.12635,5831228.011975,2935181.884825,5870363.77045|
EXCEPTIONS 	|application/vnd.ogc.se_inimage|
FORMAT 	|png|
HEIGHT 	|256|
LAYERS 
|Judete,RuralSate,Rural,Urban,roads,roads-buc,buildings,GranitaJudete|
MAP 	|/var/www/html/map/rtc_base.map|
MAP_IMAGETYPE 	|agg|
MAXEXTENT 	|left-bottom=(20.26,43.16) right-top=(29.7,48.46)|
MAXRESOLUTION 	|156543|
REQUEST 	|GetMap|
SERVICE 	|WMS|
SRS 	|EPSG:900913|
STYLES 	
TRANSITIONEFFECT 	|resize|
TRANSPARENT 	|false|
UNITS 	|m|
VERSION 	|1.1.1|
WIDTH 	|256|


I'm not sure if MAP_IMAGETYPE=agg is the one which selects the 
outputformat or not, but the map seems to be rendered with AGG (I could 
be wrong, of course).

So, what am I missing here? Is there another parameter that should be 
sent to mapserver to select the outputformat?

By the way, the image file generated has these properties: img.png: PNG 
image, 256 x 256, 8-bit colormap, interlaced

Thanks,
Adrian

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