I'm trying to plot symbols on a map (US highway shields), but am experiencing problems.<br><br>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.
<br><br>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?
<br><br>Northern tile: <a href="http://www.screenshots.cc/view_image/9fb511255/1.png" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">http://www.screenshots.cc/view_image/9fb511255/1.png</a><br>Southern tile: 
<a href="http://www.screenshots.cc/view_image/ee8631252/3.png" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">
http://www.screenshots.cc/view_image/ee8631252/3.png</a><br>Overlap tile (halfway between northern & southern): <a href="http://www.screenshots.cc/view_image/c0f0a1216/2.png" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">
http://www.screenshots.cc/view_image/c0f0a1216/2.png
</a><br><br>Below is some relevant stuff from the map file:<br><br>SYMBOL<br>  NAME "Interstate"<br>  TYPE PIXMAP<br>  IMAGE "/home/map/shapes/PB13/shields<div id="mb_0">/INTERSTATE_ALPHA.PNG"<br>END<br>
<br>LAYER<br>
    NAME         us_interstate_symbols_level_8<br>    DATA         "/home/map/shapes/PB13/Interstate_symbols_level_8"<br><br>    STATUS       OFF<br>    TYPE         ANNOTATION<br>    LABELCACHE on<br>    LABELITEM "Route"
<br>    MAXSCALE       2407465<br>    MINSCALE       1203732<br>    LABELMAXSCALE          2407465<br>    LABELMINSCALE          1203732<br>    TRANSPARENCY 90<br>    PROJECTION<br>      "init=epsg:4326"<br>    END
<br>    METADATA<br>        wms_title       us_interstate_symbols<br>        "wms_onlineresource" "<a href="http://wxtile2.wsi.com:85/cgi-bin/mapserv?map=map/labeltest.map&" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">
http://wxtile2.wsi.com:85/cgi-bin/mapserv?map=map/labeltest.map&
</a>"<br>        "wms_srs"       "EPSG:4326 EPSG:900913"<br>    END<br>    CLASS<br>        STYLE<br>                SYMBOL "Interstate"<br>        END<br>      LABEL<br>                TYPE truetype
<br>                FONT "tahoma"<br>                SIZE 7<br>                #ANGLE auto<br>                POSITION cc<br>                COLOR 255 255 255<br>                BACKGROUNDCOLOR 0 84 146<br>                PARTIALS FALSE
<br>                FORCE TRUE<br>         END<br>    END<br>END<br><br>Thanks,<br><span class="sg">Dave.<br><br></span></div>