I'm trying to convert a shape geometry to WKB within a arcpy.da.cursor for import it in a Postgis database. When I analyze the result I saw that arcpy give me a 2d geoemtry when I convert to WKB. Is there anyone who knows this problem??

Am I doing something wrong??

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    We can't tell what is going on without your code. Please edit the question to contain the relevant code snippet. You should also specify the exact versions of ArcGIS and PostgreSQL in use. – Vince Apr 3 '17 at 10:56
  • not sure this is an arcpy issue. If you look at this document, WKB only store X and Y (edndoc.esri.com/arcsde/9.1/general_topics/…). try using WKT (combined with ST_GeomFromText) – radouxju Apr 3 '17 at 14:20
  • A 9.1 doc might not provide the best representation of the capabilities of ArcGIS 10.4/10.5. The WKB standard uses the same 4-dimensional coordinates as used by the Esri geometry processing library (with extras like collections, but without spatial references). – Vince Apr 3 '17 at 23:58