mapserver map file - hilite style in querymap

[Ken Boss]

I've done this sort of thing by using a separate layer for displaying
selected features in the querymap.  My query is run against my "normal"
polygon map layer, but in my query template, instead of using a
[queymap] (or [indexquerymap] in my case)template to display the
querymap, I've got an img tag like:

<img
src="http://[host]/cgi-bin/mapserv43?map=[map]&layers=landsat+roads+pls&mapxy=[shpmidx]+[shpmidy]&scale=50000&mapext=shapes&tileindex=[tileidx]&shapeindex=[shpidx]&qlayer=hiliter&mode=indexquerymap">


The querymap and "hiliter" layers in my mapfile are like:

  QUERYMAP
    SIZE 300 300
    STATUS off
    STYLE selected
  END

  LAYER
    NAME hiliter
    TYPE line
    STATUS off
    MAXSCALE 150000
    TILEINDEX drs/metadata/mapserver/for_dofarea
    TILEITEM "location"
    CLASS
      SYMBOL 'circle'
      SIZE 2
      COLOR 255 255 0
      TEMPLATE "dummy"
    END
  END

Note that the "hiliter" layer uses the same TILEINDEX/TILEITEM (or
DATA) specs as the originally queried polygon layer, and the TEMPLATE
spec is just a dummy spec to make the layer queryable (though it's not
actually queried, just displayed in the querymap).

HTH,

--Ken Boss
  MN DNR Forestry Resource Assessment


>>> John Spotten <John.Spotten at CAPETOWN.GOV.ZA> 1/14/2005 9:10:20 AM
>>>
Hi,

Is it possible to specify a thicker hilite style for selected objects
i.e. more than 1 pixel, in a map file?

and if so how?

thanks
john

John Spotten
Transport Modeller/GIS Developer
Directorate of Transport, Roads and Stormwater
City of Cape Town
Tel : +27 21 4067325
Fax : +27 21 4186989
Cell : +27 846678901
Email : john.spotten at capetown.gov.za
Web : www.capetown.gov.za
 <<John Spotten.vcf>>