[mapserver-users] MINSIZE for POLYGON?

[Hankley, Chip]

I think "MINSIZE" only refers to labels and symbols, not layers. Does your
shapefile have an area field? If so, you could set an expression in your
class definition to only show polygons whose area was greater than some
number.

So, your layer definition would be:

LAYER
  NAME LAKE
  TYPE POLYGON
  STATUS On
  DATA "eu/eu_See"
  CLASSITEM 'AREA'  #or whatever the fieldname is...
  CLASS
    EXPRESSION ([AREA] >= 3250) #or whatever your threshold is...
    NAME "Lakes"
    OUTLINECOLOR 0 0 128
    COLOR 209 209 255
  END
END

Chip 



-----Original Message-----
From: Korbai, Zoltan [mailto:korbai.zoltan at axelero.hu]
Sent: Wednesday, June 12, 2002 10:45 AM
To: mapserver-users at lists.gis.umn.edu
Subject: [mapserver-users] MINSIZE for POLYGON?


Hi,

I have a polygon layer (lakes) and I tried to use MINSIZE
because I do not want to show small lakes (some pixels):

LAYER
 NAME LAKE
 TYPE POLYGON
 STATUS On
 DATA "eu/eu_See"
  CLASS
    NAME "Lakes"
  MINSIZE 50
  OUTLINECOLOR 0 0 128
  COLOR 209 209 255
  END
END 

But nothing happened. All lakes are shown. Any ideas?

Thanks,
Korbai, Zoltan