[mapserver-users] Horizontal line appears at the edge with circle symbol

[Ei Fujioka]

Dear experts,

I'm upgrading Mapserver from 4.2 to 5.2 and experiencing a very annoying 
problem.

There appears a horizontal line at the edge of the map drawn by 
Mapserver 5.2 when the symbol is set to "circle". This didn't happen 
with Mapserver 4.2.
When I change the symbol to "square", the line doesn't appear.

I've tried various settings (e.g. SIZE, ANGLE, ANTIALIAS etc.) with no luck.

Does anyone have any idea what's wrong with it?

** Examples: **
Mapserver 5.2 with circle symbol:
http://seamap-dev.env.duke.edu/seamap2/main/seamap2_gm.php?sid=horizontal_line_with_circle&mode=draw_map&outputformat=PNG24&layer_name=dist_sp_01deg&layer_type=point&mapsize=256%2B256&mapext=-90%2C27.059125784374068%2C-84.375%2C31.95216223802497

Mapserver 5.2 with square symbol:
http://seamap-dev.env.duke.edu/seamap2/main/seamap2_gm.php?sid=no_line_with_square&mode=draw_map&outputformat=PNG24&layer_name=dist_sp_01deg&layer_type=point&mapsize=256%2B256&mapext=-90%2C27.059125784374068%2C-84.375%2C31.95216223802497

** Mapserver info. **
./mapserv -v
MapServer version 5.2.0 OUTPUT=GIF OUTPUT=PNG OUTPUT=JPEG OUTPUT=WBMP 
OUTPUT=SVG SUPPORTS=PROJ SUPPORTS=FREETYPE SUPPORTS=ICONV 
SUPPORTS=WMS_SERVER SUPPORTS=WMS_CLIENT SUPPORTS=WFS_SERVER 
SUPPORTS=WFS_CLIENT SUPPORTS=WCS_SERVER SUPPORTS=GEOS INPUT=EPPL7 
INPUT=POSTGIS INPUT=OGR INPUT=GDAL INPUT=SHAPEFILE

** Mapfile exerpt **

MAP
   EXTENT -20001364 -15000982 20001253 15000982
   IMAGECOLOR 255 255 255
   IMAGETYPE gif
   SYMBOLSET "/var/www/seamap2/map/symbolset.map"
   SHAPEPATH "/data/shapefiles/"
   SIZE 256 256
   STATUS ON
   TRANSPARENT TRUE
   UNITS DD
   NAME "SEAMAP ONLINE MAPPER"
   PROJECTION
     "init=epsg:54004"
   END

   LAYER
     CLASSITEM "_sp_tsn"
     CONNECTION "host=***"
     CONNECTIONTYPE POSTGIS
     DATA "_geom from (***) ***"
     NAME "zd_35"
     PROJECTION
       "init=epsg:4326"
     END
     STATUS ON
     TOLERANCE 0.1
     TYPE POINT
     CLASS
       NAME "Anatidae"
       EXPRESSION "174983"
       STYLE
         ANGLE 360
         COLOR 255 255 0
         OPACITY 50
         OUTLINECOLOR 0 0 0
         SIZE 9
         SYMBOL "circle"  : annoying horizontal line appears
         #SYMBOL "square" : when square is used, no horizontal line
       END
       TITLE "174983"
     END
     ...


-- 
======================
   Ei Fujioka
   Research Associate
   Duke University

   (919) 613-8021
   efujioka at duke.edu
======================