points disappearing when zooming in

[Bart van den Eijnden (OSGIS)]

Hi list,

I have a strange problem.

Say at a scale of 1:200000 a whole lot of points are displayed. Then I
zoom in at the cloud of points, to a scale of say 1:20000, and no points
are displayed anymore.

The layer has no MINSCALE or MAXSCALE settings, also the CLASSES have none.

How can this be? Any thoughts?

For reference, the layer definition:

  LAYER
    METADATA
     "WMS_LAYER_GROUP"         "/WEGGEG"
     "WFS_MAXFEATURES"         "50"
     "OWS_TITLE"               "Portalen"
     "OWS_ABSTRACT"            "Portalen punt"
     "WMS_METADATAURL_TYPE"    "TC211"
     "WMS_METADATAURL_FORMAT"  "text/xml"
     "WMS_METADATAURL_HREF"   
"http://test.intranet.rijkswaterstaat.nl/apps/geoservices/metadata/basispakket/AAA86"
     "GML_INCLUDE_ITEMS"       "all"
     "GML_GEOMETRIES"          "geometry"
     "GML_GEOMETRY_TYPE"       "multipoint"
     "OWS_EXTENT"              "10000 305000 280000 619000"
    END
    PROJECTION
      "init=epsg:28992"
    END
    NAME "AAA86"
    DATA "weggeg/geogegevens/shapefile/weggeg_wegvakniveau/portalen"
    STATUS ON
    TYPE POINT
    UNITS METERS
    SIZEUNITS PIXELS
    TOLERANCE 5
    TOLERANCEUNITS PIXELS
    TEMPLATE "blank.html"
    DUMP TRUE
    CLASSITEM "OMSCHR"
    CLASS
      NAME "staal (losstaande stalen constructie)"
      EXPRESSION "staal (losstaande stalen constructie)"
      STYLE
        SYMBOL "square"
        COLOR 225 225 225
         SIZE 6
      END
      STYLE
        SYMBOL "square"
        COLOR 0 92 230
         SIZE 4
      END
    END
    CLASS
      NAME "viaduct (aan de zijkant van een viaduct)"
      EXPRESSION "viaduct (aan de zijkant van een viaduct)"
      STYLE
        SYMBOL "square"
        COLOR 225 225 225
         SIZE 6
      END
      STYLE
        SYMBOL "square"
        COLOR 168 112 0
         SIZE 4
      END
    END
  END

Best regards,
Bart