size of POINT in shp file

[Camden Daily]

You'll want to look into using STYLE and SYMBOL definitions in your map file.

Here's an example of a layer with red circles for points that are 3
pixels large.

  LAYER
    NAME "points"
    TYPE POINT
    STATUS DEFAULT
    DATA "points"
    CLASS
      STYLE
        SYMBOL 'circle'
        COLOR 255 0 0
        SIZE 3
      END
    END
  END

  SYMBOL
    NAME 'circle'
    TYPE ELLIPSE
    POINTS
      1 1
    END
    FILLED TRUE
  END