[mapserver-users] WMS image doesn't shows at major scales

[Carlos Ruiz]

Hi to all,

I have a problem here with an WMS layer, and have no clue about what could be 
happening. I have an ECW file 

with the following info:

Driver: ECW/ERMapper Compressed Wavelets
Files: mosaico_spot_2009.ecw
Size is 192034, 184370
Coordinate System is `'
Origin = (425473.750000000000000,2527371.250000000000000)
Pixel Size = (2.500000000000000,-2.500000000000000)
Corner Coordinates:
Upper Left  (  425473.750, 2527371.250)
Lower Left  (  425473.750, 2066446.250)
Upper Right (  905558.750, 2527371.250)
Lower Right (  905558.750, 2066446.250)
Center      (  665516.250, 2296908.750)
Band 1 Block=192034x1 Type=Byte, ColorInterp=Red
  Overviews: arbitrary
  Metadata:
    LAYER_TYPE=athematic
Band 2 Block=192034x1 Type=Byte, ColorInterp=Green
  Overviews: arbitrary
  Metadata:
    LAYER_TYPE=athematic
Band 3 Block=192034x1 Type=Byte, ColorInterp=Blue
  Metadata:
    LAYER_TYPE=athematic

It is provided as a WMS and here is the MAP file contents:

MAP

        NAME 'spot'
        SIZE 800 600
        UNITS meters

        DEBUG 5
        CONFIG "MS_ERRORFILE" "/var/www/html/spot.log"
                
        EXTENT 425473 2066446 905559 2527371

        PROJECTION
                'proj=utm'
                'ellps=WGS84'
                'datum=WGS84'
                'zone=13'
                'north'
                'nodefs'
        END
    
        OUTPUTFORMAT
                NAME jpeg
                DRIVER "GD/JPEG"
                MIMETYPE "image/jpeg"
                IMAGEMODE RGB
                EXTENSION "jpg"
        END

        METADATA
                        'wms_title'                             'SPOT'
                        'wms_onlineresource'                    
'http://sitel.jalisco.gob.mx/cgi-bin/spot'
                        'wms_srs'                               'EPSG:32613'
                        'wms_fees'                              'none'
                        'wms_contactperson'                     'IC Carlos Ruiz'
                        'wms_contactelectronicmailaddress'      
'cruizch at gmail.com'
        END
                
        LAYER
                
            NAME 'spot'
            TYPE RASTER
            DATA '/var/www/html/raster/spot.ecw'
            STATUS DEFAULT
            
            PROJECTION
                'proj=utm'
                'ellps=WGS84'
                'datum=WGS84'
                'zone=13'
                'north'
                'no_defs'
            END
            
            METADATA
                'wms_title' 'Imagen SPOT'
            END
                        
        END

END

Everything works fine above the 1:152,000 scale, but when you try to reach major 
scales, it shows nothing. The 

map has no MINSCALEDENOM nor MAXSCALEDENOM.

Taking a look at the log file, nothing's wrong. If I set the "MS_NONSQUARE" 
config key throws: 


msDrawMap(): kicking into non-squarepixel preserving mode.

but nothing yet shows beyond 1:152,000.

Does anyone have a clue about what's wrong ? I'm using Mapserver 5.6.5

Thanks in advance


IC Carlos Ruiz


      
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