El oficial de la OGC "el conocido Texto de la Representación de Sistemas de Referencia Espacial" para EPSG 4326 (http://spatialreference.org/ref/epsg/4326/ogcwkt/) es (su segunda proyección):
GEOGCS["WGS 84",DATUM["WGS_1984",SPHEROID["WGS84",6378137,298.257223563,AUTHORITY["EPSG","7030"]],AUTHORITY["EPSG","6326"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.01745329251994328,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4326"]]
y no
GEOGCS["GCS_WGS_1984",DATUM["D_WGS_1984",SPHEROID["WGS_1984",6378137.0,298.257223563]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]]
que es el "ESRI WKT" dialecto representación que usted puede encontrar en http://spatialreference.org/ref/epsg/4326/esriwkt/
Confirmación con gdalsrsinfo:
$ gdalsrsinfo -o wkt_all "EPSG:4326"
OGC WKT :
GEOGCS["WGS 84",
DATUM["WGS_1984",
SPHEROID["WGS 84",6378137,298.257223563,
AUTHORITY["EPSG","7030"]],
AUTHORITY["EPSG","6326"]],
PRIMEM["Greenwich",0,
AUTHORITY["EPSG","8901"]],
UNIT["degree",0.0174532925199433,
AUTHORITY["EPSG","9122"]],
AUTHORITY["EPSG","4326"]]
OGC WKT (simple) :
GEOGCS["WGS 84",
DATUM["WGS_1984",
SPHEROID["WGS 84",6378137,298.257223563]],
PRIMEM["Greenwich",0],
UNIT["degree",0.0174532925199433]]
....
ESRI WKT :
GEOGCS["GCS_WGS_1984",
DATUM["D_WGS_1984",
SPHEROID["WGS_1984",6378137,298.257223563]],
PRIMEM["Greenwich",0],
UNIT["Degree",0.017453292519943295]]
Hay otros dialectos de WKT. El más común dialecto es este "ESRI WKT" dialecto. Pero para las proyecciones de otros que WGS84, ésta no incluye la TOWGS84 y la AUTORIDAD de los nodos de parámetros:
$ gdalsrsinfo -o wkt_all "EPSG:4632"
OGC WKT :
GEOGCS["Combani 1950",
DATUM["Combani_1950",
SPHEROID["International 1924",6378388,297,
AUTHORITY["EPSG","7022"]],
TOWGS84[-382,-59,-262,0,0,0,0],
AUTHORITY["EPSG","6632"]],
PRIMEM["Greenwich",0,
AUTHORITY["EPSG","8901"]],
UNIT["degree",0.0174532925199433,
AUTHORITY["EPSG","9122"]],
AUTHORITY["EPSG","4632"]]
OGC WKT (simple) :
GEOGCS["Combani 1950",
DATUM["Combani_1950",
SPHEROID["International 1924",6378388,297],
TOWGS84[-382,-59,-262,0,0,0,0]],
PRIMEM["Greenwich",0],
UNIT["degree",0.0174532925199433]]
.....
ESRI WKT :
GEOGCS["Combani 1950",
DATUM["D_Combani_1950",
SPHEROID["International_1924",6378388,297]],
PRIMEM["Greenwich",0],
UNIT["Degree",0.017453292519943295]]
lo que crea problemas para las aplicaciones o bibliotecas que no tienen ESRI WKT en cuenta (como libLAS) (los basados en GDAL/OGR (QGIS, GRASS GIS, PostGIS ...), potencialmente, sí).