EPSG code of 32618 for WGS 84 / UTM zone 18N

[Frank Warmerdam]

John Mitchell wrote:
> Hi,
> 
> I have the listed the gdalinfo listing of an erdas imagine file below 
> and notice that it does not have a EPSG code within it.  I need this 
> EPSG code if I want to reproject within gdalwarp or for on the fly 
> projection within mapserver.  Based the gdalinfo listing I searched 
> within the epsg file and found the following code and definition:
> 
> # WGS 84 / UTM zone 18N
> <32618> +proj=utm +zone=18 +ellps=WGS84 +datum=WGS84 +units=m +no_defs  <>
> 
> Does the above EPSG code of 32618 make sense for the below gdalinfo listing?

John,

Yes, EPSG:32618 is equivelent to the following definition.

Best regards,

> PROJCS["UTM Zone 18, Northern Hemisphere",
>     GEOGCS["WGS_1984",
>         DATUM["WGS_1984",
>             SPHEROID["WGS 84",6378137,298.2572235630016],
>             TOWGS84[0,0,0,0,0,0,0]],
>         PRIMEM["Greenwich",0],
>         UNIT["degree",0.0174532925199433]],
>     PROJECTION["Transverse_Mercator"],
>     PARAMETER["latitude_of_origin",0],
>     PARAMETER["central_meridian",-75],
>     PARAMETER["scale_factor",0.9996],
>     PARAMETER["false_easting",500000],
>     PARAMETER["false_northing",0],
>     UNIT["Meter",1]]

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