I'm trying to plot symbols on a map (US highway shields), but am experiencing problems.
If I ask MapServer for two adjacent squares of map, on the northern square I get the top half a symbol (it is at the southern boundary) and on the southern square there is no sign of that symbol. When the squares are later put together to form a larger map, the effect is of half a symbol. Is there a way to prevent partial symbols? The PARTIALS directive only appears to apply to labels, not symbols. I also note that if I render an overlapping square containing half of the northern and half of the southern square, the symbol that is cut off in the northern square is nowhere to be seen. What happened? Is there some sort of decluttering going on? If so, how can this be controlled? Northern tile: http://www.screenshots.cc/view_image/9fb511255/1.png Southern tile: http://www.screenshots.cc/view_image/ee8631252/3.png Overlap tile (halfway between northern & southern): http://www.screenshots.cc/view_image/c0f0a1216/2.png Below is some relevant stuff from the map file: SYMBOL NAME "Interstate" TYPE PIXMAP IMAGE "/home/map/shapes/PB13/shields/INTERSTATE_ALPHA.PNG" END LAYER NAME us_interstate_symbols_level_8 DATA "/home/map/shapes/PB13/Interstate_symbols_level_8" STATUS OFF TYPE ANNOTATION LABELCACHE on LABELITEM "Route" MAXSCALE 2407465 MINSCALE 1203732 LABELMAXSCALE 2407465 LABELMINSCALE 1203732 TRANSPARENCY 90 PROJECTION "init=epsg:4326" END METADATA wms_title us_interstate_symbols "wms_onlineresource" "http://wxtile2.wsi.com:85/cgi-bin/mapserv?map=map/labeltest.map& " "wms_srs" "EPSG:4326 EPSG:900913" END CLASS STYLE SYMBOL "Interstate" END LABEL TYPE truetype FONT "tahoma" SIZE 7 #ANGLE auto POSITION cc COLOR 255 255 255 BACKGROUNDCOLOR 0 84 146 PARTIALS FALSE FORCE TRUE END END END Thanks, Dave.