As of GDAL 3.0, the default format for WKT export is OGC WKT 1.
The WKT version can be overridden by using the OSR_WKT_FORMAT
configuration option (see set_config_option()
).
Valid values are one of: SFSQL, WKT1_SIMPLE, WKT1, WKT1_GDAL,
WKT1_ESRI, WKT2_2015, WKT2_2018, WKT2, DEFAULT.
If SFSQL, a WKT1 string without AXIS, TOWGS84, AUTHORITY or
EXTENSION node is returned. If WKT1_SIMPLE, a WKT1 string without
AXIS, AUTHORITY or EXTENSION node is returned. WKT1 is an alias of
WKT1_GDAL. WKT2 will default to the latest revision implemented
(currently WKT2_2018). WKT2_2019 can be used as an alias of
WKT2_2018 since GDAL 3.2