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I'm trying to use some government map rasters (tifs) in Mapserver. The
specs that come with the tif's list the projection information as:<br>
<dl>
<dt><em>Spatial_Reference_Information:</em> </dt>
<dd>
<dl>
<dt><em>Horizontal_Coordinate_System_Definition:</em> </dt>
<dd>
<dl>
<dt><em>Planar:</em> </dt>
<dd>
<dl>
<dt><em>Map_Projection:</em> </dt>
<dd>
<dl>
<dt><em>Map_Projection_Name:</em> Lambert Conformal
Conic</dt>
<dt><em>Lambert_Conformal_Conic:</em> </dt>
<dd>
<dl>
<dt><em>Standard_Parallel:</em> 38.666670</dt>
<dt><em>Standard_Parallel:</em> 33.333330</dt>
<dt><em>Longitude_of_Central_Meridian:</em>
-121.466670</dt>
<dt><em>Latitude_of_Projection_Origin:</em>
38.333330</dt>
<dt><em>False_Easting:</em> 0.000000</dt>
<dt><em>False_Northing:</em> 0.000000</dt>
</dl>
</dd>
</dl>
</dd>
<dt><em>Planar_Coordinate_Information:</em> </dt>
<dd>
<dl>
<dt><em>Planar_Coordinate_Encoding_Method:</em> row
and column</dt>
<dt><em>Coordinate_Representation:</em> </dt>
<dd>
<dl>
<dt><em>Abscissa_Resolution:</em> 63.744612</dt>
<dt><em>Ordinate_Resolution:</em> 63.744612</dt>
</dl>
</dd>
<dt><em>Planar_Distance_Units:</em> meters</dt>
</dl>
</dd>
</dl>
</dd>
<dt><em>Geodetic_Model:</em> </dt>
<dd>
<dl>
<dt><em>Horizontal_Datum_Name:</em> North American Datum
of 1983</dt>
<dt><em>Ellipsoid_Name:</em> Geodetic Reference System 80</dt>
<dt><em>Semi-major_Axis:</em> 6378137.000000</dt>
<dt><em>Denominator_of_Flattening_Ratio:</em> 298.257222</dt>
</dl>
</dd>
</dl>
</dd>
</dl>
</dd>
</dl>
I'm trying understand how to translate that into the PROJECTION clause
in a Mapserver layer specification in a .MAP file.<br>
My best guess (...and I am guessing...) is:<br>
<br>
PROJECTION<br>
proj=lcc <br>
lat_1=38.666670<br>
lat_2=33.333330 <br>
lat_0=38.333330<br>
lon_0=-121.466670 <br>
x_0=0.000000<br>
y_0=0.000000<br>
ellps=GRS80 <br>
units=m <br>
no_defs <br>
END<br>
<br>
That doesn't seem to work. Can anyone give me a clue as to what I did
wrong?<br>
<br>
-- Richard<br>
<br>
<br>
<em><br>
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