Are you requesting your image through a WMS and maybe getting a ‘non-square 
pixel’ effect?

If you are using WMS, are the symbols round when you do a cgi request in 
mode=map or mode=tile?

David.

From: [email protected] 
[mailto:[email protected]] On Behalf Of Oliver Christen
Sent: Tuesday, January 12, 2010 9:31 AM
To: thomas bonfort
Cc: [email protected]
Subject: Re: [mapserver-users] symbol circle (ellipse) rendered not round but 
oval

Hi Thomas :)

thanks for the answer, but sadely it didnt solve my problem:

here are a few tests I did:

using GAP 20 gave me really weird result:
http://dev.camptocamp.com/~ochriste/tilecache6_gap_20.png

using PATTERN 1 22 END gave me better result, but the dot are still slightly 
oval:
http://dev.camptocamp.com/~ochriste/tilecache7_pattern.png

I wondered if the visual effect may have come from the fact im pilling up two 
circle one over the other, but even when trying to display only the outer or 
inner circles, the circle are still slightly off:
http://dev.camptocamp.com/~ochriste/tilecache4_outercircle.png
http://dev.camptocamp.com/~ochriste/tilecache5_innercircle.png
(both at once http://dev.camptocamp.com/~ochriste/tilecache3_bothcircle.png)

any other idea? ^_^
----- Original Message -----
From: thomas bonfort<mailto:[email protected]>
To: Oliver Christen<mailto:[email protected]>
Cc: [email protected]<mailto:[email protected]>
Sent: Tuesday, January 12, 2010 3:18 PM
Subject: Re: [mapserver-users] symbol circle (ellipse) rendered not round but 
oval

hi Oliver :)

try with GAP 20 instead of STYLE 1 20 END (which is deprecated btw, use PATTERN 
now)

cheers,
thomas
On Tue, Jan 12, 2010 at 15:04, Oliver Christen 
<[email protected]<mailto:[email protected]>> wrote:
hello

I have a weird problem with symbology.
Im rendering a line with dots, but the dots are not round but slightly oval, 
see image http://dev.camptocamp.com/~ochriste/tilecache.png

Any idea what could be the cause ?

Here is my symbol definition:

SYMBOL
 NAME "linie-gepunkt10"
 TYPE ELLIPSE
 POINTS
  1 1
 END
 STYLE
  1 20
 END
 FILLED TRUE
END

and my layer's class definition:

 CLASS
  EXPRESSION "3"
  MAXSCALEDENOM 200001
  STYLE
    SYMBOL "linie-gepunkt10"
    SIZE 10
    COLOR 102 51 0
  END
  STYLE
    SYMBOL "linie-gepunkt10"
    SIZE 8
    COLOR 204 102 0
  END
 END

and the map outputformat:

OUTPUTFORMAT
 NAME png
 DRIVER "AGG/PNG"
 MIMETYPE "image/png"
 IMAGEMODE RGBA
 EXTENSION "png"
 FORMATOPTION "INTERLACE=OFF"
END
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