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-rw-r--r--src/iso19111/io.cpp3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/iso19111/io.cpp b/src/iso19111/io.cpp
index c84ea2f3..7329758a 100644
--- a/src/iso19111/io.cpp
+++ b/src/iso19111/io.cpp
@@ -6899,6 +6899,7 @@ PROJStringParser::Private::buildGeographicCRS(int iStep, int iUnitConvert,
getNumericValue(getParamValue(step, "lon_0")) != 0.0)) {
props.set("EXTENSION_PROJ4", projString_);
}
+ props.set("IMPLICIT_CS", true);
return GeographicCRS::create(props, datum, cs);
}
@@ -7389,6 +7390,8 @@ CRSNNPtr PROJStringParser::Private::buildProjectedCRS(
props.set("EXTENSION_PROJ4", projString_);
}
+ props.set("IMPLICIT_CS", true);
+
CRSNNPtr crs = ProjectedCRS::create(props, geogCRS, NN_NO_CHECK(conv), cs);
if (!hasParamValue(step, "geoidgrids") &&