Hi, if it's a problem with the projection, then OL is not responsable.
OL only creates a WMS request based on the declared map.projection for each tile. theWMSServer?SERVICE=WMS&VERSION=1.1.1&REQUEST=GETMAP&SRS=[map.projection]&B BOX=[tileExtent]&LAYERS=.... If the WMS request fails, it could be, that the wrong projection in OL is declared or more possibly MapServer don't support the requested projection. For further investigation grab the image url for a failed tile request from firebug and test it in the browser. You can also manuell change parameters of the url to see the response from MapServer. Arnd Wippermann -----Ursprüngliche Nachricht----- Von: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Im Auftrag von Burgholzer,Robert Gesendet: Donnerstag, 16. Oktober 2008 18:11 An: jeffcopes; [email protected] Betreff: Re: [OpenLayers-Users] MapServer OpenLayers Layer fails to load Jeff, I do not know for sure, but I would try using a simple SRID type in the projection block for your countries layer. I believe that I have had trouble with using proj=latlong, and I now use something like so: PROJECTION "init=epsg:4269" END You will have to choose the proper epsg for your projection. My hypothesis is that since Mapserver can deliver your countries layer along with other ones, IT understands your LAYER projection declaration, and then conforms it to the overall MAP projection, which OL must be able to understand. I further suppose that when Mapserver sends out a request for the country LAYER only, that the countries projection is coming in and OL does not understand it. Give it a try, r.b. Robert W. Burgholzer Surface Water Modeler Office of Water Supply and Planning Virginia Department of Environmental Quality [EMAIL PROTECTED] 804-698-4405 Open Source Modeling Tools: http://sourceforge.net/projects/npsource/ -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of jeffcopes Sent: Thursday, October 16, 2008 10:47 AM To: [email protected] Subject: Re: [OpenLayers-Users] MapServer OpenLayers Layer fails to load Here are the layers: ##################################### # City layer - Cities # LAYER NAME "cities" GROUP "CITIES" DATA "/ssa/data/MapServer/Earth/Vectordata/WorldMap/Cities" STATUS off PROCESSING "CLOSE_CONNECTION=DEFER" TYPE point LABELCACHE on MAXSCALE 290 LABELMAXSCALE 150 CLASS NAME "Cities" EXPRESSION(3 <= [POP_RANK] and [POP_RANK] <= 5) STYLE SYMBOL "Circle" SIZE 4 COLOR 255 255 0 END TEXT ([CITY_NAME]) LABEL PARTIALS false TYPE truetype FONT "arialbd" SIZE 7 POSITION auto OUTLINECOLOR 255 255 255 COLOR 0 0 0 END END END ##################################### ################################################## # Cities layer - Large cities, pop. < 1,000,000 # LAYER NAME "largecities" GROUP "CITIES" DATA "/ssa/data/MapServer/Earth/Vectordata/WorldMap/Cities" STATUS off PROCESSING "CLOSE_CONNECTION=DEFER" TYPE point LABELCACHE on MAXSCALE 290 LABELMAXSCALE 150 CLASS EXPRESSION([POP_RANK]<=2) NAME "Cities" STYLE SYMBOL "Circle" SIZE 6 COLOR 255 0 0 BACKGROUNDCOLOR 255 0 0 END TEXT ([CITY_NAME]) LABEL PARTIALS false TYPE truetype FONT "arialbd" SIZE 8 POSITION auto OUTLINECOLOR 255 255 255 COLOR 0 0 0 END END END ################################################## ##################################### # Cities layer - State capitals and cities pop. > 1000000 # LAYER NAME "majorcities" GROUP "CITIES" DATA "/ssa/data/MapServer/Earth/Vectordata/WorldMap/Cities" STATUS off PROCESSING "CLOSE_CONNECTION=DEFER" TYPE point LABELITEM "NAME" LABELCACHE on LABELMAXSCALE 15000000 # NOTE: CLASSITEM causes total map failure (pink map) # CLASSITEM "FEATURE" # MINSCALE 2000000 CLASS NAME "State Capitals" EXPRESSION /State*/ STYLE SYMBOL "Circle" SIZE 6 COLOR 0 255 0 END LABEL PARTIALS false TYPE truetype FONT "arialbd" SIZE 9 POSITION auto OUTLINECOLOR 255 255 255 COLOR 0 0 0 END END CLASS EXPRESSION ([Pop_2000] > 1000000) NAME "Major Cities" STYLE SYMBOL "Circle" SIZE 10 COLOR 255 0 0 END LABEL PARTIALS false TYPE truetype FONT "arialbd" SIZE 10 OUTLINECOLOR 255 255 255 COLOR 0 0 0 POSITION auto END END END ##################################### # City layer - Towns # LAYER NAME "towns" GROUP "CITIES" DATA "/ssa/data/MapServer/Earth/Vectordata/WorldMap/Cities" STATUS off PROCESSING "CLOSE_CONNECTION=DEFER" TYPE point LABELCACHE on LABELITEM "NAME" LABELMAXSCALE 20 MAXSCALE 4 CLASS NAME "Towns" EXPRESSION ([Pop_2000] < 5000) STYLE SYMBOL "Circle" SIZE 4 COLOR 0 255 0 END LABEL PARTIALS false TYPE truetype FONT "arialbd" SIZE 7 POSITION auto OUTLINECOLOR 255 255 255 COLOR 0 0 0 END END END ##################################### ############# START BLUE MARBLE WORLD LAYER ###################### LAYER # name of layer # sets: # /WMT_MS_Capabilities/Capability/Layer/*/Name # /WFS_Capabilities/FeatureTypeList/FeatureType[*]/Name NAME "blue_marble_world" # group layer belongs to # this is used to add an extra <Layer> nest # to the output Capabilities XML GROUP "IMAGERY" # projection: if the data is NOT in the same projection as the global # mapfile, you must explicitly give the native projection code of the data # Using proj parameters is quicker, bypasses file lookup # PROJECTION # "init=epsg:4326" # END PROJECTION "proj=latlong" "ellps=WGS84" "datum=WGS84" END # what type of data is this? TYPE RASTER # allow data access via query and WCS DUMP TRUE # always returned with interface STATUS off # Minimum scale that the layer will show (1 = 100K), (2 = 200K) MINSCALE 3 # actual data pointer DATA "/ssa/data/MapServer/Earth/imagery/world_mid_res0.tif" # Set a PROCESSING directive to tell FastCGI to cache the connections and layer information # on all layers for which connection caching is desired (in other words, all slow layers) PROCESSING "CLOSE_CONNECTION=DEFER" # for HTML queries HEADER ../web/templates/world_topo_2048_query_header.html TEMPLATE ../web/templates/world_topo_2048_query_body.html METADATA # OGC:WMS specific tags # sets: # /WMT_MS_Capabilities/Capability/Layer/*/Title "ows_title" "Land Surface, Shallow Water, and Shaded Topography" # sets: # /WMT_MS_Capabilities/Capability/Layer/*/Abstract "ows_abstract" "Much of the information contained in this image came from a single remote-sensing device-NASA's Moderate Resolution Imaging Spectroradiometer, or MODIS. Flying over 700 km above the Earth onboard the Terra satellite, MODIS provides an integrated tool for observing a variety of terrestrial, oceanic, and atmospheric features of the Earth. The land and coastal ocean portions of these images are based on surface observations collected from June through September 2001 and combined, or composited, every eight days to compensate for clouds that might block the sensor's view of the surface on any single day. Two different types of ocean data were used in these images: shallow water true color data, and global ocean color (or chlorophyll) data. Topographic shading is based on the GTOPO 30 elevation dataset compiled by the U.S. Geological Survey's EROS Data Center. MODIS observations of polar sea ice were combined with observations of Antarctica made by the National Oceanic and Atmospheric Administration's AVHRR sensor - the Advanced Very High Resolution Radiometer. The cloud image is a composite of two days of imagery collected in visible light wavelengths and a third day of thermal infra-red imagery over the poles. Global city lights, derived from 9 months of observations from the Defense Meteorological Satellite Program, are superimposed on a darkened land surface map" # sets: # /WMT_MS_Capabilities/Capability/Layer/*/KeywordList/Keyword[] "ows_keywordlist" "NASA,MODIS,AVHRR,EROS" # sets: # /WMT_MS_Capabilities/Capability/Layer/*/@opaque "wms_opaque" "1" # this positions this layer definition within the GROUP defined above "wms_group_title" "IMAGERY" # this is the abstract text associated with "wms_group_title" # you only need to define this once "wms_group_abstract" "Imagery layers" # sets: # /WMT_MS_Capabilities/Capability/Layer/*/BoundingBox/@resx # full resolution "wms_resx" "0.087890625" # half resolution # "wms_resx" "0.175781250" # sets: # /WMT_MS_Capabilities/Capability/Layer/*/BoundingBox/@resy # full resolution "wms_resy" "0.087890625" # half resolution # "wms_resy" "0.175781250" # sets: # /WMT_MS_Capabilities/Capability/Layer/*/LatLonBoundingBox "ows_extent" "-180 -90 180 90" # sets /WMT_MS_Capabilities/Capability/Layer/*/MetadataURL/OnlineResource/@type "ows_metadataurl_type" "FGDC" # sets /WMT_MS_Capabilities/Capability/Layer/*/MetadataURL/Format "wms_metadataurl_format" "text/html" # sets /WMT_MS_Capabilities/Capability/Layer/*/MetadataURL/OnlineResource/@xlin k:href "ows_metadataurl_href" "http://earthobservatory.nasa.gov/Newsroom/BlueMarble/"; # sets /WMT_MS_Capabilities/Capability/Layer/*/DataURL/Format "wms_dataurl_format" "image/tiff" # sets /WMT_MS_Capabilities/Capability/Layer/*/DataURL/OnlineResource/@xlink:hr ef "wms_dataurl_href" "http://earthobservatory.nasa.gov/Newsroom/BlueMarble/Images/land_shallo w_topo_2048.tif" # OGC:WFS specific tags # None! This is raster data, not covered by OGC:WFS "gml_include_items" "all" END END ############# END BLUE MARBLE WORLD LAYER###################### ##################################### # hydrographic layer - lakes # LAYER NAME "lakes" GROUP "HYDRO" DATA "/ssa/data/MapServer/Earth/Vectordata/WorldMap/Hydro" STATUS off PROCESSING "CLOSE_CONNECTION=DEFER" TYPE line LABELCACHE on LABELITEM "NAME" MAXSCALE 20 TRANSPARENCY 50 CLASS EXPRESSION ('[NAME]' eq 'N/A') STYLE SYMBOL "BigLine" SIZE 2 COLOR 50 110 180 OUTLINECOLOR 0 0 0 END TEXT (n/a) LABEL PARTIALS false TYPE truetype FONT "arial" SIZE 7 OUTLINECOLOR 200 195 190 COLOR 20 80 140 MINDISTANCE 300 POSITION lr MINFEATURESIZE auto END END END ##################################### # Hydrographic layer - streams & rivers # ##################################### LAYER NAME "rivers" GROUP "HYDRO" DATA "/ssa/data/MapServer/Earth/Vectordata/WorldMap/MajorRivers" STATUS off PROCESSING "CLOSE_CONNECTION=DEFER" TYPE line LABELCACHE on LABELITEM "NAME" TRANSPARENCY 50 CLASS EXPRESSION ('[NAME]' ne 'N/A') STYLE SYMBOL "BigLine" SIZE 2 COLOR 50 110 180 OUTLINECOLOR 0 0 0 END LABEL PARTIALS false TYPE truetype FONT "arial" SIZE 7 OUTLINECOLOR 200 195 190 COLOR 20 80 140 MINDISTANCE 300 POSITION lr MINFEATURESIZE auto END END END ##################################### # Country Boundaries layer # LAYER NAME "countries" GROUP "COUNTRIES" DATA "/ssa/data/MapServer/Earth/Vectordata/WorldMap/CountriesGeneralized" PROJECTION "proj=latlong" "ellps=WGS84" "datum=WGS84" END STATUS off PROCESSING "CLOSE_CONNECTION=DEFER" TYPE polygon LABELCACHE on # Don't show the label at this level #LABELITEM "NAME" # CLASSITEM "FEATURE" # 3: shows at <=216K # 4: shows at <=433K # 5: shows at <=433K # 6: shows at <=865K # 12: doesn't show at <=2M MAXSCALE 600 #MINSCALE 6 TRANSPARENCY 30 CLASS NAME "Countries" # STYLE SYMBOL "Circle" SIZE 3 # # yellow: 255 255 0 # # pale blue: 255 64 0 # COLOR 255 64 0 OUTLINECOLOR 215 16 0 # END # OVERLAYSYMBOL "Circle" # OVERLAYSIZE 3 # OVERLAYCOLOR 255 64 0 TEXT ([CNTRY_NAME]) LABEL PARTIALS false TYPE truetype FONT "verdana" SIZE 9 OUTLINECOLOR 215 215 215 COLOR 215 16 0 MINDISTANCE 600 POSITION lr MINFEATURESIZE 150 END END END -- View this message in context: http://www.nabble.com/MapServer-OpenLayers-Layer-fails-to-load-tp1998297 6p20014905.html Sent from the OpenLayers Users mailing list archive at Nabble.com. _______________________________________________ Users mailing list [email protected] http://openlayers.org/mailman/listinfo/users _______________________________________________ Users mailing list [email protected] http://openlayers.org/mailman/listinfo/users _______________________________________________ Users mailing list [email protected] http://openlayers.org/mailman/listinfo/users
