ka-map: pgsql layers not rendering tiles

[Dylan Beaudette]

Greetings,

Having a blast using ka-map and mapserver, but ran into a bit of trouble when 
including a layer from a postgis source.

here is the layer defs from my map file, which work fine in a dbox-style 
mapserver application:

-----------------
LAYER 
		NAME "county-boundaries"		
		TYPE POLYGON
 		PROJECTION
 			"+proj=aea +x_0=0.0 +y_0=0 +lon_0=-96 +lat_0=40.0 +lat_1=20 +lat_2=60.0 
+datum=NAD83"
 		END
		DATA "gen_2 from poly_county using unique county_id"
		
      	CONNECTION "user=xxx password=xxx dbname=tiger2005se host=localhost 
port=5432"
      	CONNECTIONTYPE postgis
		STATUS DEFAULT
		TRANSPARENCY ALPHA
		STATUS DEFAULT
		MINSCALE 24000
		LABELMAXSCALE 2037392 
		LABELITEM "county_name"
		CLASS
			NAME "County Boundaries"			
			STYLE
				ANTIALIAS TRUE
				WIDTH 2
				OUTLINECOLOR 1 1 1 
			END				
			LABEL
				TYPE TRUETYPE
				FONT sans
				SIZE 13
				ANTIALIAS TRUE
				COLOR 20 20 220
				OUTLINECOLOR 255 255 255
				POSITION CC
				PARTIALS FALSE
				BUFFER 2
			END 
			
    	END 
			
 END 

----------------

I read here 
(http://lists.maptools.org/pipermail/ka-map-users/2005-December/000721.html) 
that ka-map will only work with postgis data if the projection string in the 
layer defs matched the SRID of the geometry itself.

noticing that my geometry columns had an incorrect SRID, i changed this with 
the postgis function setsrid() ... however when this layer is enabled, ka-map 
will not generate tiles. also, tile.php returns the following error:

Call to a member function on a non-object in /data1/website/kamap/tile.php on 
line 225

this appears to be where ka-map is either creating or saving the image:

        $szMetaImg = $szMetaDir."/t".$metaTop."l".$metaLeft.$szImageExtension;
        $oImg = $oMap->draw();
        $oImg->saveImage($szMetaImg);
        $oImg->free();

.... i have a fully functional ka-map application using this same set of temp 
directories, and config files. 

does anyone have any ideas on this?

thanks in advance!



-- 
Dylan Beaudette
Soils and Biogeochemistry Graduate Group
University of California at Davis
530.754.7341