Logical Expressions

[D. Eric Keefauver]

New to MS. My question is this: I am wanting to use a logical expression
within a layer in my mapfile. The below expression will render the county
with the exact acreage of '438282.297'. How would I set it to display all
acreages in the field that are < 500,000 ? Syntax? I am running MS4W v
1.4.0.  Also, could this value (500,000) be set by a user through, say,
via a form?

Thanks much

Eric


LAYER
  NAME Michigan_county_eqip
  TYPE POLYGON
  STATUS OFF
  DATA Michigan_county_eqip

  CLASSITEM 'ACRES'
  CLASS
    NAME "ACREAGE" #This is read into the legend
    EXPRESSION '438282.297'
    OUTLINECOLOR 0 0 0
    COLOR 173 216 230
    TEMPLATE "county_eqip.html"
  END
  CLASS # every other county in the state
    NAME "COUNTIES"
    OUTLINECOLOR 211 211 211
    COLOR 119 136 153
    TEMPLATE "county_eqip.html"
  END


  HEADER "county_eqip_header.html"
  FOOTER "county_eqip_footer.html"

  TOLERANCE 3

  DUMP TRUE # allow GML export

END

Eric Keefauver
Research Scientist
Michigan Tech Research Institute (MTRI)
3520 Green Court, Suite 300
Ann Arbor, MI 48105-1579
Phone: 734-302-4724
Fax: 734-302-4991
eric.keefauver at mtu.edu
http://www.mtri.org