confused about coordinate dimension

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In Python, I want to find the coordinate dimension of my source. For
example, with a postgis table with geometry(MultiLineStringZM,4326). My
Python:

in_lyr = in_ds.ExecuteSQL(select)
feature0 = in_lyr.GetNextFeature()
feature0_geom = feature0.GetGeometryRef()
feature0_geom.GetGeometryType()        # 3005
ogr.GeometryTypeToName(3005)            #  '3D Measured Multi Line String'
feature0_geom.GetCoordinateDimension()  # 3

Based on:
https://gdal.org/en/stable/api/vector_c_api.html#_CPPv425OGR_G_CoordinateDimension12OGRGeometryH
I am expecting the coordinate dimension to be 4. Am I approaching this
incorrectly?

-- 
Richard W. Greenwood

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<div dir=3D"ltr"><div>In Python, I want to find the coordinate dimension of=
 my source. For example,<span style=3D"background-color:transparent">=C2=A0=
with a postgis table with=C2=A0geometry(MultiLineStringZM,4326). My Python:=
</span></div><blockquote style=3D"margin:0 0 0 40px;border:none;padding:0px=
"><div>in_lyr =3D in_ds.ExecuteSQL(select)</div><div>feature0 =3D in_lyr.Ge=
tNextFeature()</div><div>feature0_geom =3D feature0.GetGeometryRef()</div>f=
eature0_geom<span style=3D"background-color:transparent">.GetGeometryType()=
=C2=A0 =C2=A0 =C2=A0 =C2=A0 # 3005</span><div>ogr.GeometryTypeToName(3005)=
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 #=C2=A0 &#39;3D Measured Multi Li=
ne String&#39;</div>feature0_geom.GetCoordinateDimension()<span style=3D"ba=
ckground-color:transparent">=C2=A0 # 3</span></blockquote><div>Based on:=C2=
=A0<a href=3D"https://gdal.org/en/stable/api/vector_c_api.html#_CPPv425OGR_=
G_CoordinateDimension12OGRGeometryH">https://gdal.org/en/stable/api/vector_=
c_api.html#_CPPv425OGR_G_CoordinateDimension12OGRGeometryH</a></div><div>I =
am expecting the coordinate dimension to be 4. Am I approaching this incorr=
ectly?</div><div><br></div><span class=3D"gmail_signature_prefix">-- </span=
><br><div dir=3D"ltr" class=3D"gmail_signature" data-smartmail=3D"gmail_sig=
nature"><div dir=3D"ltr">Richard W. Greenwood<br></div></div></div>

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