[Tilecache] Re solutions issues

[Frédéric Junod]

Yves,

You seems to have some errors in your tilecache.cfg:
  resolutions:96,48,32,24,12,6,3,1.5,0.6,0.25
should be 
  resolutions=96,48,32,24,12,6,3,1.5,0.6,0.25
':' vs '='

and 'BBOX' should be 'bbox' (the options keys are case sensitive)


fredj

Le Thu, 30 Oct 2008 06:04:22 -0700 (PDT),
Yves Moisan <yves.moisan at boreal-is.com> a écrit :

> 
> Hi All,
> 
> I am fighting to get TileCache to work.  I did it in the past, but I suspect
> now the issue has to do with the 900913 projection.  Files :
> 
> tilecache.cfg :
> 
> [cache]
> type=Disk
> base=c:/mapping_data/tilecache/
> 
> ..
> 
> [Ikonos]
> type=WMS
> srs=EPSG:29194
> #BBOX=-19000000,-8000000,19000000,19000000
> BBOX=-4093623,-1086705,-4083992,-1077571
> #BBOX=-4094656,-1086705,-4083992,-1077571
> url=http://myserver:8292/cgi-bin/mapserv.exe
> extension=png
> #resolutions=256,128,64,32,24,16,8,4,2,1,0.5,0.25
> #resolutions:192,96,48,24,12,6,3,1.5,0.75,0.375,0.25
> resolutions:96,48,32,24,12,6,3,1.5,0.6,0.25
> extent_type=loose
> metaTile=true
> 
> You can see I tried a few options ...
> 
> html file :
> 
>            options = {
>                  maxExtent:  new OpenLayers.Bounds(-19000000, -8000000,
> 19000000, 19000000),
>                       //maxExtent: new
> OpenLayers.Bounds(-20037508.34,-20037508.34,20037508.34,20037508.34),
>                       //numZoomLevels: 14,
>                       numZoomLevels: 16,
>                    //   maxResolution: 156000,
>                       minScale: 110000000,
>                       resolutions:[96,48,32,24,12,6,3,1.5,0.6,0.25],
>                       controls: [],
>                       units: 'm',
>                       projection: new OpenLayers.Projection("EPSG:900913"),
>                       displayProjection: new
> OpenLayers.Projection("EPSG:4326")
>                       };
>            
>             map = new OpenLayers.Map('map', options);
> 
> ...
> 
>             var Ikonos_TC = new OpenLayers.Layer.WMS(
>                        "Ikonos TC",  
>                        "http://myserver:8292/tilecache/tilecache.cgi",
>                        {layers: 'Ikonos',
>                         transparent: 'false',
>                         srs: 'EPSG:29194',
>                         format: 'image/png'},
>                        {isBaseLayer: 'true',
>                         buffer:0,
>                         transitionEffect:'resize'});  
>                        
>             map.addLayer(Ikonos_TC);
> 
> and the map file :
> 
> ...
> #  IMAGETYPE PNG24
>   IMAGETYPE jpeg
>   IMAGECOLOR 255 255 255
>   UNITS meters                                                                
>   #FONTSET '../etc/fonts.txt'    
>   SHAPEPATH ...\WEB-INF\classes\module\maps\data\'
>   #SYMBOLSET '../etc/symbols.sym'
>  ...  
>   PROJECTION
>    "init=epsg:900913"
>    END
> 
> ...
> 
> LAYER
>   NAME Ikonos
>   GROUP "Imagery"
>   PROJECTION
>    "init=epsg:29194"
>   END
>   TYPE RASTER
>   DUMP FALSE
>   STATUS ON
>   DATA "ARAPIRACA_IKONOS_2007NOV25.TIF"
>  
>   METADATA
> 
>     # OGC:WMS specific tags
>     "ows_title"    "Ikonos"
>     #"ows_abstract"    "Ikonos 3 colors, 1 m"
>     "ows_keywordlist"    "PHOTO"
>     "wms_opaque"    "1"
>     "ows_srs" "EPSG:900913"
>     "wms_group_title" "Imagery"
>     "wms_group_abstract" "Imagery layers"
>     "wms_resx" "0.17578125"
>     "wms_resy" "0.17578125"
>     "ows_extent" "751977.182 8949542.880 740606.182, 8925969.880"
>     "ows_metadataurl_type" "FGDC"
>     "wms_metadataurl_format" "text/html"
>     "ows_metadataurl_href" ""
>     "wms_dataurl_format" "image/tiff"
>     "wms_dataurl_href" ""
>   END
> END #layer Ikonos
> 
> I know there are a few parameters there that are probably redundant, but at
> any rate that layer works (MapServer projects the image from its src SRS to
> 900913) if I call the WMS service directly.  It does not work (pink tiles,
> then "An error occurred: Current x value -4094656.000000 is too far from
> tile corner x -4093623.000000" type messages) when I use TileCache.
> 
> I can see the c:/mapping_data/tilecache directories are created, but that is
> it.  If I tweak the x and y to satisfy the error messages, then I get a
> "can't find resolution index for 19.964844. Available resolutions are:
> [96.0, 48.0, 32.0, 24.0, 12.0, ..." type message.  What should I look for
> and how I should I go about debugging this ?
> 
> TIA,
> 
> Yves Moisan


-- 
Frédéric Junod
Camptocamp SA