Restricting map draws WMS

[Travis Kirstine GIS Tech]

Steve,
I've attached a portion of a mapfile with the min/max scale definitions in
the layer definitions.  I've done some looking through ESRI technical
articles and found some issues on their end:

http://support.esri.com/index.cfm?fa=knowledgebase.techArticles.articleShow&
d=27956

http://support.esri.com/index.cfm?fa=knowledgebase.techArticles.articleShow&
d=27954

Do I have to accept this as another fact of life or is there anything I
could do about it?


MAP
   NAME "FirstBaseSolutions_wms"
   STATUS OFF
   SIZE 490 440
   UNITS METERS
   EXTENT 514539 4734925 825054 4994985
   SHAPEPATH /var/www/data/umap_vector_data/
   FONTSET "/var/www/html/umap_www/map_symbols/fonts.txt"
   SYMBOLSET "/var/www/html/umap_www/map_symbols/symbols.sym"
   IMAGECOLOR 255 255 255
   IMAGETYPE png
   WEB
      IMAGEPATH "/var/www/html/wms/map_images/"
      IMAGEURL "http://www.firstbasesolutions.com/wms/map_images/"
      METADATA
         "wms_title" "FirstBaseSolutions_wms"
         #"wms_accessconstraints" "none"
         "wms_onlineresource" "http://www.site.com/cgi-bin/name_of_service?"
         "wms_srs" "EPSG:26917"
      END
   END
   PROJECTION
      "init=epsg:26917"
   END
   OUTPUTFORMAT
      NAME png
      DRIVER "GD/PNG"
      MIMETYPE "image/png"
      IMAGEMODE RGB
      EXTENSION "png"
   END
# raster layers
#<<<<<<<<<<<<   FBS 6km Tiles   >>>>>>>>>>>>>
   LAYER
      NAME ortho_6km_tiles
      METADATA
         "wms_title" "ortho_6km_tiles"
         "wms_extent" "551000 4744000 796000 4983000"
      END
      PROJECTION
         "init=epsg:26917"
      END
      STATUS OFF
      MINSCALE 0
      MAXSCALE 50000
      TYPE RASTER
      TILEINDEX "/var/public/esri_wms_data/fbs_6km_tiles_2002"
      TILEITEM "location"
      #GROUP Orthophoto
   END
#<<<<<<<<<<<<<   FBS 1km Tiles   >>>>>>>>>>>>
   LAYER
      NAME ortho_1km_tiles
      METADATA
         "wms_title" "ortho_1km_tiles"
         "wms_extent" "551000 4744000 796000 4983000"
      END
      PROJECTION
         "init=epsg:26917"
      END
      STATUS OFF
      MINSCALE 0
      MAXSCALE 3500
      TYPE RASTER
      TILEINDEX "/var/public/esri_wms_data/fbs_1km_tiles_2002"
      TILEITEM "location"
      #GROUP Orthophoto
   END

Travis Kirstine




-----Original Message-----
From: Steve Lime [mailto:Steve.Lime at dnr.state.mn.us]
Sent: Wednesday, May 31, 2006 6:09 PM
To: tkirstine at JDBARNES.COM; MAPSERVER-USERS at LISTS.UMN.EDU
Subject: Re: [UMN_MAPSERVER-USERS] Restricting map draws WMS


Travis: Did you try setting MINSCALE/MAXSCALE for each layer? The underlying
drawing code will respect (or at least I think it does) those values
regardless of the what the client asks for.

Steve

>>> Travis Kirstine GIS Tech <tkirstine at JDBARNES.COM> 05/31/06 12:06 PM >>>
Hi All,
Is there a easy way to control minscale/maxscale draws server side for a
wms? We are testing a wms that serves out high res. ortho for a large area
(30,000km2).  We were hoping that we could control the draw with the
minscale maxcale options in the layer definition in the server side mapfile.
However, when testing the wms using ArcGIS 8.3, ArcGIS 9.1, uDig and
ArcExplorer Web we are finding that the minscale maxscale are not
consistently recognized on the client side, and if the minscale/maxscale
definitions are omitted the draw times are extreme.

Any ideas would be great.

Travis