[mapserver-users] Re: how do min/max scale filters work?

[Michelle Douvil]

Have you been able to get the MAXSCALEDENOM to work in this case?

I am see discrepancies in the way it respects MAXSCALEDENOM depending on
which EPSG projection I request in my WMS GETMAP request..(using Mapserver
6.0)

Projection is set at MAP level as all SDE layers are in EPSG:3005..
PROJECTION
        "init=epsg:3005"
END #projection
 

IE..

This respects scale dependency..(zoomed out greater than MAXSCALEDENOM
42000)
http://server/mapserver6/base6?service=WMS&REQUEST=GetMap&SERVICE=WMS&VERSION=1.1.1&LAYERS=TWTR_LINES&STYLES=&FORMAT=image/png&BGCOLOR=0xFFFFFF&TRANSPARENT=TRUE&SRS=EPSG:3005&BBOX=1098893.28235966,374108.170310702,1181083.70268062,432796.317606444&WIDTH=1217&HEIGHT=869

log says this..
[Tue May 24 14:45:31 2011].114000 msDrawMap(): rendering using outputformat
named aggpng24 (AGG/PNG).
[Tue May 24 14:45:31 2011].114000 msLayerIsVisible(): Skipping layer
(TWTR_LINES) because LAYER.MAXSCALE is too small for this MAP scale
[Tue May 24 14:45:31 2011].114000 msDrawMap(): WMS/WFS set-up and query,
0.000s
[Tue May 24 14:45:31 2011].114000 msLayerIsVisible(): Skipping layer
(TWTR_LINES) because LAYER.MAXSCALE is too small for this MAP scale
[Tue May 24 14:45:31 2011].114000 msDrawMap(): Drawing Label Cache, 0.000s

this does not respect MAXSCALEDENOM.. (get very busy image after 30 secs )
http://server/mapserver6/base6?service=wms&version=1.1.1&request=getmap&SRS=EPSG:4326&BBOX=-124.185652285947,48.4090479408979,-122.255909410219,49.4369750954166&WIDTH=811&HEIGHT=432&FORMAT=image/png&STYLES=&layers=TWTR_LINES

Layer is defined as such:
 LAYER
     EXTENT 200000 200000 1900000 1900000
     MAXSCALEDENOM 42000
     debug 5
     
     
     GROUP "Base_Mapping_20K"
         NAME 'TWTR_LINES'
         CONNECTIONTYPE sde
         CONNECTION 'XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX'
         DATA 'WHSE_BASEMAPPING.TRIM_WATER_LINES,GEOMETRY'
         
         TYPE line
        
         CLASSITEM FCODE
         
         STATUS ON
         CLASS
             NAME "Canal"
             EXPRESSION GA03950000
             STYLE
               	COLOR 0 0 255
         	WIDTH 2
             END
             STYLE
               	COLOR 0 0 255
         	WIDTH 2
 		OFFSET 0 10
             END
         END
         ......
         METADATA
             wms_title "Water - Lines (1:20K)"
             wms_metadataurl_format "html"
             wms_metadataurl_href "XXXXXXXXXXXXXXXXXXXXX"
             wms_metadataurl_type "TC211"
             wms_srs "EPSG:3005 EPSG:3785 EPSG:102190 EPSG:26907 EPSG:26707
EPSG:32607 EPSG:3857 EPSG:42102 EPSG:4269 EPSG:4326 EPSG:26708 EPSG:26709
EPSG:26710 EPSG:26711 EPSG:26712 EPSG:26908 EPSG:26909 EPSG:26910 EPSG:26911
EPSG:26912 EPSG:32608 EPSG:32609 EPSG:32610 EPSG:32611 EPSG:32612
EPSG:54004"
     	     wfs_title "Water - Lines (1:20K)"
             gml_geometries "geom"
             gml_geom_type "line"
             gml_include_items "all"
             gml_exclude_items "GEOMETRY,OBJECTID"
             ows_include_items "all"
             ows_exclude_items "GEOMETRY,OBJECTID"
         END #end 
         PROCESSING "CLOSE_CONNECTION=DEFER"
         DUMP TRUE
         TEMPLATE "foo.html"
   END #end LAYER
     
      
 Many thanks for you help!
Michelle


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