Newbie qn re using lat/lon bounding box for eastings raster image in map file

[Andrew Schofield]

Apologies if this is covered by the mailing list already. I have looked through 
the documentation etc. and couldn’t find a clear explanation and have tried a 
variety of srs settings to no avail. (BTW, how do you search the mailing lists 
for multiple words?)
 

I have a map file with a mixture of vector and raster layers. For the vector 
layers, my request url works fine with Lat/Lon ranges for the bounding box but 
the raster layer requires the bounding box in eastings/northings ranges. I 
would like one url that can query both layers with a latitude/longitude range 
only. I think I’m missing something in explicitly declaring the overriding 
projection scheme for the raster layer, is that correct? (The vector layers are 
epsg:4326).
 

Thanks,

Andy

 


Below is the gdalinfo response for the single image covered by the raster layer.


Driver: GTiff/GeoTIFF
Size is 3431, 4021
Coordinate System is:
PROJCS["unnamed",
    GEOGCS["WGS 84",
        DATUM["WGS_1984",
            SPHEROID["WGS 84",6378137,298.2572235630016,
                AUTHORITY["EPSG","7030"]],
            AUTHORITY["EPSG","6326"]],
        PRIMEM["Greenwich",0],
        UNIT["degree",0.0174532925199433],
        AUTHORITY["EPSG","4326"]],
    PROJECTION["Transverse_Mercator"],
    PARAMETER["latitude_of_origin",0],
    PARAMETER["central_meridian",-117],
    PARAMETER["scale_factor",0.9996],
    PARAMETER["false_easting",500000],
    PARAMETER["false_northing",0],
    UNIT["metre",1,
        AUTHORITY["EPSG","9001"]],
    AUTHORITY["EPSG","32611"]]
Origin = (648640.000000000000000,4250560.000000000000000)
Pixel Size = (32.000000000000000,-32.000000000000000)
Metadata:
  AREA_OR_POINT=Point
  TIFFTAG_XRESOLUTION=1
  TIFFTAG_YRESOLUTION=1
  TIFFTAG_RESOLUTIONUNIT=1 (unitless)
Corner Coordinates:
Upper Left  (  648640.000, 4250560.000) (115d17'52.78"W, 38d23'27.28"N)
Lower Left  (  648640.000, 4121888.000) (115d19'27.86"W, 37d13'54.01"N)
Upper Right (  758432.000, 4250560.000) (114d 2'31.34"W, 38d21'57.36"N)
Lower Right (  758432.000, 4121888.000) (114d 5'16.39"W, 37d12'27.75"N)
Center      (  703536.000, 4186224.000) (114d41'17.34"W, 37d48'2.64"N)
Band 1 Block=3431x128 Type=Byte, ColorInterp=Red
Band 2 Block=3431x128 Type=Byte, ColorInterp=Green
Band 3 Block=3431x128 Type=Byte, ColorInterp=Blue